service manual r410a revised edition-b [service ref.]...

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

SERVICE MANUAL R410A

Outdoor unit[Model Name]

PUHZ-P200YKA

PUHZ-P250YKA

[Service Ref.]

PUHZ-P200YKA.UKPUHZ-P200YKAR1.UKPUHZ-P250YKA.UKPUHZ-P250YKAR1.UK

PARTS CATALOG (OCB582)

CONTENTSTECHNICAL CHANGES ···································· 21. REFERENCE MANUAL ································· 32. SAFETY PRECAUTION ································· 33. FEATURES ····················································· 74. SPECIFICATIONS ·········································· 85. DATA ······························································· 96. OUTLINES AND DIMENSIONS ··················· 127. WIRING DIAGRAM ······································ 138. WIRING SPECIFICATIONS ·························· 14

9. REFRIGERANT SYSTEM DIAGRAM ············· 1910. TROUBLESHOOTING ·································· 2111. FUNCTION SETTING ··································· 7512. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ····8313. EASY MAINTENANCE FUNCTION ············· 9214. DISASSEMBLY PROCEDURE ····················· 95

Note:•Thismanualdescribesservicedataoftheoutdoorunitsonly.

No. OCH582REVISED EDITION-B

June 2015

•PleasevoidOCH582REVISEDEDITION-A.

Revision:•Added PUHZ-P200YKAR1.UKandPUHZ-P250YKAR1.UKinREVISEDEDITION-B.

•Somedescriptionshavebeenmodified.

2

TECHNICAL CHANGES

PUHZ-P200YKA.UK PUHZ-P200YKAR1.UKPUHZ-P250YKA.UK PUHZ-P250YKAR1.UK 1.SoftwaremodificationtobeabletoconnectwithPAC-IF013B-E/PAC-SIF013B-E(AHUinterface)hasbeenmade.

OCH582B

3

2-1. ALWAYS OBSERVE FOR SAFETYBefore obtaining access to terminal, all supply circuits must be disconnected.

INDOOR UNIT SERVICE MANUAL

ModelName ServiceRef. ServiceManualNo.

PLA-RP50/60/71/125/100BA PLA-RP50/60/71/125/100BAR4.UK OCH412OCB412

PCA-RP50/60/71/100/125KAQ PCA-RP50/60/71/100/125KAQR2(-ER) OCH491OCB491

PKA-RP50HAL PKA-RP50HALR1(-ER) OCH453OCB453

PKA-RP60/71/100KAL PKA-RP60/71/100KALR1.TH(-ER) OCH452OCB452

PSA-RP71/100/125KA PSA-RP71/100/125KA OCH528OCB528

PEAD-RP50/60/71/100/125JA(L)Q PEAD-RP50/60/71/100/125JA(L)QR2.UK HWE10090BWE10160

PEA-RP200/250GAQ PEA-RP200/250GAQ.TH-AF HWE10070BWE10140

2 SAFETY PRECAUTION

2-2. CAUTIONS RELATED TO NEW REFRIGERANTCautions for units utilizing refrigerant R410A

Preparation before the repair service.

• Prepare the proper tools.• Prepare the proper protectors.• Provide adequate ventilation.• After stopping the operation of the air conditioner, turn off the power-supply beaker.• Discharge the condenser before the work involving the electric parts.

Precautions during the repair service.

• Do not perform the work involving the electric parts with wet hands.• Do not pour water into the electric parts.• Do not touch the refrigerant.• Do not touch the hot or cold areas in the refrigerating cycle.• When the repair or the inspection of the circuit needs to be done without turning off the power, exercise great caution

not to touch the live parts.

1 REFERENCE MANUAL

OCH582B

4

[1] Cautions for service(1) Perform service after recovering the refrigerant left in unit completely.(2) Do not release refrigerant in the air.(3) After completing service, charge the cycle with specified amount of refrigerant.(4) When performing service, install a filter drier simultaneously.

Be sure to use a filter drier for new refrigerant.

[2] Additional refrigerant chargeWhen charging directly from cylinder·CheckthatcylinderforR410Aonthemarketisasyphontype.·Chargingshouldbeperformedwiththecylinderofsyphonstoodvertically.(Refrigerantischargedfromliquidphase.)

Gravimeter

Unit

Make sure that the inside and outside of refrige-rant piping is clean and it has no contaminantssuch as sulfur, oxides, dirt, shaving particles, etc,which are hazard to refrigerant cycle.In addition, use pipes with specified thickness.

Contamination inside refrigerant piping can cause deterio-ration of refrigerant oil, etc.

Store the piping indoors, and both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.)If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of com-pressor.

The refrigerant oil applied to flare and flangeconnections must be ester oil, ether oil or alkylbenzene oil in a small amount.If large amount of mineral oil enters, that can cause deterio-ration of refrigerant oil, etc.

Use a vacuum pump with a reverse flow check valve.Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil, etc.

Charge refrigerant from liquid phase of gascylinder.If the refrigerant is charged from gas phase, composition change may occur in refrigerant and the efficiency will be lowered.

Use new refrigerant pipes.

In case of using the existing pipes for R22, be careful withthe following:· Be sure to clean the pipes and make sure that the insides of the pipes are clean.· Change flare nut to the one provided with this product. Use a newly flared pipe. · Avoid using thin pipes.

Do not use refrigerant other than R410A.

If other refrigerant (R22, etc.) is used, chlorine in refrige-rant can cause deterioration of refrigerant oil, etc.

Handle tools with care.

If dirt, dust or moisture enters into refrigerant cycle, that cancause deterioration of refrigerant oil or malfunction of com-pressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigera-nt will change and the efficiency will be lowered.

Use the following tools specifically designed for use with R410A refrigerant.The following tools are necessary to use R410A refrigerant.

Flare tool

Electronic refrigerant charging scale

Vacuum pump adaptorSize adjustment gauge

Gauge manifold

Torque wrenchGas leak detectorCharge hose

Tools for R410A

Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact witha flame, poisonous gases will be released.

Never use any refrigerant other than that specified.Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of.Correct refrigerant is specified in the manuals and on the spec labels provided with our products.We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to follow the instructions.

Use the specified refrigerant only.

OCH582B

Performtheairtight test,vacuumairpurging,additional refrigerantcharging(ifnecessary),andgasleakcheck.

•Refertotheflowchartbelowtodetermineiftheexistingpipescanbeusedandifitisnecessarytouseafilterdrier.•Ifthediameteroftheexistingpipesisdifferentfromthespecifieddiameter,refertotechnologicaldatamaterialstoconfirmifthepipescanbeused.

▼

▼

▼

▼

▼

▼ ▼

Measuretheexistingpipethicknessandcheckfordamage.The existing pipe thickness meets specifica-

tions and the pipes are not damaged.

Checkiftheexistingairconditionercanoperate.

Afteroperatingthecoolingsystemforabout30minutes,doapumpdownwork.

Disconnecttheexistingairconditionerfromthepipes.

Attachthenewairconditioner

Testrun Theexistingpipescannotbereused.Usenewpipes.

•Iftheexistingairconditionercannotoperate,usearefrigerantrecoverydevicetocollecttherefrigerant.

•Incaseexistingpipeswereusedforgasoroilheatpumpsystems,besuretocleanthepipesforP200/250models.

The existing pipe thickness does not meetspecifications or the pipes are damaged.

5

2-3. PRECAUTIONS WHEN REUSING EXISTING R22 REFRIGERANT PIPES(1) Flowchart

[3] Service tools Use the below service tools as exclusive tools for R410A refrigerant.

No. Toolname Specifications

1 Gaugemanifold · OnlyforR410A· Usetheexistingfittingspecifications.(UNF1/2)· Usehigh-tensionsidepressureof5.3MPa·Gorover.

2 Chargehose · OnlyforR410A· Usepressureperformanceof5.09MPa·Gorover.

3 Electronicscale —

4 Gasleakdetector · UsethedetectorforR134a,R407CorR410A.

5 Adaptorforreverseflowcheck · Attachonvacuumpump.

6 Refrigerantchargebase —

7 Refrigerantcylinder · OnlyforR410A · Topofcylinder(Pink)· Cylinderwithsyphon

8 Refrigerantrecoveryequipment —

OCH582B

6

(2) Cautions for refrigerant piping workNewrefrigerantR410Aisadoptedforreplacementinverterseries.AlthoughtherefrigerantpipingworkforR410AissameasforR22,exclusivetoolsarenecessarysoasnottomixwithdifferentkindofrefrigerant.FurthermoreastheworkingpressureofR410Ais1.6timeshigherthanthatofR22,theirsizesofflaredsectionsandflarenutsaredifferent.

1ThicknessofpipesBecausetheworkingpressureofR410AishighercomparedtoR22,besuretouserefrigerantpipingwiththicknessshownbelow.(Neverusepipesof0.7mmorbelow.)

2DimensionsofflarecuttingandflarenutThecomponentmoleculesinHFCrefrigerantaresmallercomparedtoconventionalrefrigerants.Inadditiontothat,R410Aisarefrigerant,whichhashigherriskofleakagebecauseitsworkingpressureishigherthanthatofotherrefriger-ants.Therefore,toenhanceairtightnessandstrength,flarecuttingdimensionofcopperpipeforR410Ahasbeenspeci-fiedseparatelyfromthedimensionsforotherrefrigerantsasshownbelow.ThedimensionBofflarenutforR410Aalsohaspartlybeenchangedtoincreasestrengthasshownbelow.SetcopperpipecorrectlyreferringtocopperpipeflaringdimensionsforR410Abelow.For1/2and5/8inchpipes,thedimensionBchanges.Usetorquewrenchcorrespondingtoeachdimension.

3ToolsforR410A(Thefollowingtableshowswhetherconventionaltoolscanbeusedornot.)

1/43/81/25/83/4

6.359.52

12.7015.8819.05

0.80.80.81.0—

0.80.80.81.01.0

Nominaldimensions (in)

Diagram below: Piping diameter and thicknessOutside

diameter (mm)Thickness (mm)

R410A R22

1/43/81/25/83/4

6.359.5212.7015.8819.05

9.113.216.619.7—

9.013.016.219.423.3


Flare cutting dimensionsOutsidediameter

Dimension A ( )+0-0.4 (mm)

(mm) R410A R221/43/81/25/83/4

6.359.52

12.7015.8819.05

17.022.026.0

29.0 —

17.022.024.027.036.0


Flare nut dimensionsOutsidediameter

Dimension B (mm)(mm) R410A R22

Gauge manifoldCharge hoseGas leak detectorRefrigerant recovery equipmentRefrigerant cylinderApplied oil

Safety charger

Charge valve

Vacuum pump

Flare tool

BenderPipe cutterWelder and nitrogen gas cylinderRefrigerant charging scaleVacuum gauge or thermis-tor vacuum gauge and vacuum valveCharging cylinder

Air purge, refrigerant chargeand operation checkGas leak checkRefrigerant recoveryRefrigerant chargeApply to flared section

Prevent compressor malfunction when charging refrigerant by spraying liquid refrigerantPrevent gas from blowing out when detaching charge hoseVacuum drying and airpurge

Flaring work of piping

Bend the pipesCut the pipesWeld the pipesRefrigerant chargeCheck the degree of vacuum. (Vacuum valve prevents back flow of oil and refri-gerant to thermistor vacuum gauge)Refrigerant charge

Tool exclusive for R410ATool exclusive for R410ATool for HFC refrigerantTool exclusive for R410ATool exclusive for R410AEster oil and alkylbenzeneoil (minimum amount)Tool exclusive for R410A

Tool exclusive for R410A

Tools for other refrigerants can be used if equipped with adap-ter for reverse flow checkTools for other refrigerants can be used by adjusting flaring dimensionTools for other refrigerants can be usedTools for other refrigerants can be usedTools for other refrigerants can be usedTools for other refrigerants can be usedTools for other refrigerants can be used

Tool exclusive for R410A

Tools and materials Use R410A tools Can R22 tools be used?

(Usable if equipped with adapter for reverse flow) (Usable by adjusting flaring dimension)

Can R407C tools be used?

Ester oil: Alkylbenzene oil: minimum amount

(Usable if equipped with adapter for reverse flow) (Usable by adjusting flaring dimension)

: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.) : Tools for other refrigerants can be used under certain conditions.: Tools for other refrigerants can be used.

DimensionA

DimensionB

OCH582B

7

3 FEATURES

CHARGELESS SYSTEMPRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENTMaximum 30 m (PUHZ-P200/250)

TherefrigerantcircuitwithLEV(LinearExpansionValve)andaccumulatoralwayscontroltheoptimalrefrigerantlevelregardlessofthelength(30mmaximumand5mminimum)ofpiping.Theadditionalrefrigerantchargingworkduringinstal-lationoftencausesproblems.Itiscompletelyeliminatedbychargelesssystem.Thisuniquesystemimprovesthequalityandreliabilityoftheworkdone.Italsohelpstospeeduptheinstallationtime.

PUHZ-P200YKAPUHZ-P250YKA

OCH582B

8

4 SPECIFICATIONS

5860

A

kW

W

kWK/min(CFM)

dBdB

mm (in)mm (in)mm (in)kg (lb)

kg (lb)L

mm (in)mm (in)

Power supply (phase, cycle, voltage) Max. currentExternal finish Refrigerant control Compressor Model Motor output Starter type Protection devices

Crankcase heaterHeat exchanger Fan Fan (drive) o No. Fan motor output AirflowDefrost method Noise level Dimensions

Weight Refrigerant Charge Oil (Model)Pipe size O.D.

Connection method

Between the indoor & outdoor unit

CoolingHeating

WDH

LiquidGas

Indoor sideOutdoor sideHeight differencePiping length

Service Ref. PUHZ-P250YKA.UKPUHZ-P250YKAR1.UK

PUHZ-P200YKA.UKPUHZ-P200YKAR1.UK

Munsell 3Y 7.8/1.1Linear Expansion Valve

Hermetic

Line start

—Plate fin coil

Propeller fan o 20.200 + 0.200140 (4,940)

Reverse cycle

1,050 (41-5/16)330 + 40 (13+1-9/16)

1,338 (52-11/16)

R410A

FlaredFlared & BrazingMaximum 30 mMaximum 70 m

21

5.5

HP switchComp. surface thermo

3 phase 50 Hz, 400 V

OU

TDO

OR

UN

ITRE

FRIGE

RANT

PIPIN

G

4.7

19

127 (281)

6.5

9.52 (3/8)25.4 (1)

135 (298)

7.7

12.7 (1/2)25.4 (1)

ANB52FRNMT

2.30 (FVC68D)

5962

OCH582B

9

5 DATA

5-1. REFILLING REFRIGERANT CHARGE (R410A: kg) PUHZ-P200/250

ANB52FRNMT

Service Ref.

Compressor model

(at 20°C)

U-V

U-W

W-V

WindingResistance

( " )

0.30

0.30

0.30

PUHZ-P200/250YKA.UKPUHZ-P200/250YKAR1.UK

Additionalchargeisrequiredforpipeslongerthan30m.

Service Ref.Pipinglength(oneway) Initial

charged10m 20m 30m 40m 50m 60m 70m


5.9 6.2 6.5 +0.9(7.4) +1.8(8.3) +2.7(9.2) +3.6(10.1) 6.5


6.9 7.3 7.7 +1.2(8.9) +2.4(10.1) +3.6(11.3) +4.8(12.5) 7.7

5-3. COMPRESSOR TECHNICAL DATA

5-2. ADJUSTING THE AMOUNT OF REFRIGERANT PUHZ-P200/250Amount of additional refrigerant charge (kg)

30 m and less 31–40 m and less 41–50 m and less 51–60 m and less 61–70 m and less

0.9 kg 1.8 kg 2.7 kg 3.6 kg

1.2 kg 2.4 kg 3.6 kg 4.8 kg

Service Ref. Permittedpipe length



70 m or less

Initial charge(kg)

6.5

7.7

No additionalcharge necessary

OCH582B

10

5-4. NOISE CRITERION CURVES

1.5m

1mMICROPHONE

UNIT

GROUND

90

80

70

60

50

40

30

20

1063 125 250 500 1000 2000 4000 8000

APPROXIMATETHRESHOLD OFHEARING FORCONTINUOUSNOISE

OC

TAVE

BA

ND

SO

UN

D P

RES

SUR

E LE

VEL,

dB

(0 d

B =

0.0

002

µbar

)

BAND CENTER FREQUENCIES, Hz

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

PUHZ-P200YKA.UKPUHZ-P200YKAR1.UK COOLING

MODE

HEATING58

SPL(dB)

60

LINE

90

80

70

60

50

40

30

20

1063 125 250 500 1000 2000 4000 8000

APPROXIMATETHRESHOLD OFHEARING FORCONTINUOUSNOISE

OC

TAVE

BA

ND

SO

UN

D P

RES

SUR

E LE

VEL,

dB

(0 d

B =

0.0

002

µbar

)

BAND CENTER FREQUENCIES, Hz

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

PUHZ-P250YKA.UKPUHZ-P250YKAR1.UK COOLING

MODE

HEATING59

SPL(dB)

62

LINE

OCH582B

11

5-5. STANDARD OPERATION DATA

PLA-RP125BAR4.UKPLA-RP100BAR4.UK

PLA-RP125BAR4.UKPLA-RP100BAR4.UK

1, 501, 50

230230

0.150.14

1.000.94



3, 503, 50

400400

HeatingCoolingHeatingCooling

11.7810.578.637.77

19,000 22,400 22,000 27,000

5.92 6.36 7.83 8.41

79.274.568.866.8

50.250.345.048.8

−2.05.6−2.17.6

7.57.57.57.5

20272027

15191519

45.312.441.613.3

735735

624624

0.710.74

0.180.21

—

—

—

—

2.993.032.97 2.81

0.630.830.89 0.63

0.13

0.87

0.14

0.94

Ele

ctric

al c

ircui

tR

efrig

eran

t circ

uit

Indo

or s

ide

Out

door

side

Representative matching

SHF

BF

Mode

Capacity

InputTota

l

Phase , Hz

Voltage

Input

Current

Outdoor unit

Phase , Hz

Voltage

Current

Discharge pressure

Suction pressure

Discharge temperature

Condensing temperature

Suction temperature

Ref. pipe length

Intake air temperature

Discharge air temperature

Intake air temperature

V

kW

A

V

A

MPa

MPa

°C

°C

°C

m

°C

°C

°C

°C

°C

Indoor unit

D.B.

W.B.

D.B.

D.B.

W.B.

W

kW

OCH582B

12

Unit: mm

6 OUTLINES AND DIMENSIONS

PUHZ-P200YKA.UKPUHZ-P200YKAR1.UKPUHZ-P250YKA.UKPUHZ-P250YKAR1.UK

OCH582B

13

7 WIRING DIAGRAM

PUHZ-P200YKA.UK PUHZ-P250YKA.UKPUHZ-P200YKAR1.UK PUHZ-P250YKAR1.UK

Terminal Block <Power Supply>Terminal Block <Indoor/Outdoor>Motor for CompressorFan MotorSolenoid Valve (Four-Way Valve)High Pressure SwitchThermistor <Liquid>Thermistor <2-Phase Pipe>Thermistor <Ambient>Thermistor <Heat Sink>Thermistor <Comp. Surface>Linear Expansion ValveReactorReactorRush Current Protect ResistorFuse <T15AL250V>Capacitor

P.B.

N.F.

C.B.

TB-U/V/WTB-L1/L2/L3TB-P1/P3X52CA/B

LI1/LI2/LI3/NILO1/LO2/LO3GD1, GD2

SW1

SW4SW5SW6SW7SW8

Power Circuit BoardConnection Terminal <U/V/W-Phase>Connection Terminal <L1/L2/L3-Power Supply>Connection Terminal52C RelayNoise Filter Circuit BoardConnection Terminal <L1/L2/L3/N-Power Supply>Connection Terminal <L1/L2/L3-Power Supply>Connection Terminal <Ground>Controller Circuit BoardSwitch <Manual Defrost, Defect History,Record Reset, Refrigerant Address>Switch <Test Operation>Switch <Function Switch, Model Select>Switch <Model Select>Switch <Function Switch>Switch <Function Switch>

SW9SWPCN31CN3SCNDMCN51SV1SSCNM

CNMNT

CNVMNT

LED1, LED2F3, F4X51, X52, X54

Switch <Function Switch>Switch <Pump Down>Connector <Emergency Operation>Connector <Connection for Option>Connector <Connection for Option>Connector <Connection for Option>Connector <Connection for Option>Connector <Connection for Option>Connector <Connection for Option>Connector <Connect to Optional M-NET Adapter Board>Connector <Connect to Optional M-NET Adapter Board>LED <Operation Inspection Indicators>Fuse <T6.3AL250V>Relay

SYMBOLTB1TB2MCMF1, MF221S463HTH3TH6TH7TH8TH32LEV-AACL4DCLRSFUSE1, FUSE2CY1, CY2

SYMBOL SYMBOLNAME NAME NAME

CNDC(PNK)

3

1

MF1

CNF1(WHT)1

7

MS3~

MF2

CNF2(WHT)1

7

2

MS3~

TRANS

X54

31

P.B.

U

POWER SUPPLY3N ~400V 50Hz

TB1

V W

RED

WHT

BLK

MC

7

L 1

L 2

L 3

N

N.F.

CNDC(PNK)

31 CNL(BLU)

13

CNAC2(RED)31

CNCT(RED) 1 2

LO3

GD1

NI

LI1

LI2

LI3

GD2

S1

S2

S3

2

2ACL4

RED

WHT

BLK

BLU

RED

WHT

BLK

TB2

X52CA RED

BLK

WHT

BLK

YLW

ORN

BRN

TB-P

1

TB-P

3

RED

GRN/

YLW

BLK

BLK

WHT

WHT

INDOORUNIT

1 2CN6

(WHT)

1 2CN5

(RED)CN2

(RED)

1 7 1 2CN4

(WHT)

TB-U TB

-VTB

-W

L3IN

TB-L

2

TB-L1

TH8

t°

RSRED

MS3~

22

CY1

CY2

C. B. TH6TH7 TH3

21S4

t° t° t°

LEV-A

CNS(WHT)

CNAC(WHT)

F3

F4 21S4(GRN)

CN2(RED)

CN4(WHT)

SW5TH7/6

(RED)TH3

(WHT)CNVMNT

(WHT)CNMNT(WHT)

SW8

SW6

SW1

SW7

SW9

CN31

X52

63H(YLW)

2

7

* 11 4 1 2

1 3

31 1 5

1 21 7

13

1 2

3 431 SV1

(GRY)

LEV-A(WHT)

51

SS(WHT)

X51

31

63H

M

CN3S(WHT)

31

CNDM(WHT)

CN51(WHT)

31

51

1 2TH32(BLK)

TH32

t°

When M-NET adapter is connected

CN2M(WHT)

CN5(WHT)

CND(WHT)

M-NET

M-NET ADAPTER

TB7A B S

51

5

1

2

13

3

3 5

CNM(WHT)

1 14LE

D1

LED2

SWP

SW4

* 1

TB-L3

X52CB

L3OUT

FUSE

1

FUSE

2

WHT

RED

WHT

RED

DCL

CNAC1(WHT) 31

LO1

LO2

1 2 3 4 5 6 7 8OFFON

1 2 3 4 5 6OFFON

1 2 3 4 5 6 7 8OFFON

1 2 3 4 5 6OFFON

SW6MODEL SW5-6 *2

200Y

250Y

The black square (■) indicates a switch position.*1. MODEL SELECT

*2. SW5-1 to 5: Function switch

TB7 Terminal Block <M-NET connection>SYMBOL NAME

CN5 Connector <Transmission>CND Connector <Power Supply>CN2M Connector <M-NET communication>

M-NET ADAPTER

OCH582B

Outdoorunitmodel P200/250YOutdoorunitpowersupply 3N~(3ph4-wires),50Hz,400VOutdoorunitinputcapacitymainswitch(Breaker) *1 32A

Wiring

WireNo.×

size(m

m²) Outdoorunitpowersupply 5×Min.4

Indoorunit-Outdoorunit *2 Cablelength50m:3×4(Polar)/Cablelength80m:3×6(Polar)

Indoorunit-Outdoorunitearth *2 1×Min.2.5

Remotecontroller-Indoorunit *3 2×0.3(Non-polar)

Circuit

rating

OutdoorunitL1-N,L2-N,L3-N(3phase) *4 230VACIndoorunit-OutdoorunitS1-S2 *4 230VACIndoorunit-OutdoorunitS2-S3 *4 24VDCRemotecontroller-Indoorunit *4 12VDC

*1.Abreakerwithatleast3.0mmcontactseparationineachpoleshallbeprovided.Useearthleakagebreaker(NV). Makesurethatthecurrentleakagebreakerisonecompatiblewithhigherharmonics. Alwaysuseacurrentleakagebreakerthatiscompatiblewithhigherharmonicsasthisunitisequippedwithaninverter. Theuseofaninadequatebreakercancausetheincorrectoperationofinverter.*2.Maximum80m.Totalmaximumincludingallindoor/indoorconnectionis80m.

•UseonecableforS1andS2andanotherforS3asshowninthepicture. •Maximum50m.TotalmaximumforPEA.Wiringsize3×1.5(Polar).*3.The10mwireisattachedintheremotecontrolleraccessory.*4.ThefiguresareNOTalwaysagainsttheground. S3terminalhas24VDCagainstS2terminal.HoweverbetweenS3andS1,theseterminalsareNOTelectricallyinsulatedbythetransformerorotherdevice.

Caution: Be sure to install N-Line. Without N-Line, it could cause damage to the unit.

14

8 WIRING SPECIFICATIONS8-1. FIELD ELECTRICAL WIRING (power wiring specifications)

B

B Earth leakage breakerC wiring circuit breaker or isolating switch

C

LN

12

12

S1

Indoor unit

S2S3

S1S2S3

S1S2S3

Unitpowersupply Indoor/outdoor

unit connection cable

Indoor unit

Outdoor unit

Remote controller B


C

12

12

12

S1S2S3

S1S2S3

S1S2S3

S1S2S3

Indoor/outdoorconnection cable

Indoor unit

Unitpowersupply

Indoor unit

Indoor unit

Outdoor unit

Remote controller

LN

Synchronized twin and triple system Electrical wiring•Synchronizedtwin •Synchronizedtriple

Notes: 1. Wiring size must comply with the applicable local and national code..2. Power supply cables and Indoor/Outdoor unit connecting cables shall not be lighter than polychloroprene sheathed flexible cable.

3. Install an earth longer than other cables.

Warning: In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between power line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3 terminals when the power is energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type.

(Design 60245 IEC 57)

S1

S2

S3

S1

S2

S3

A-ControlOutdoor Unit

3 poles isolator

Power supply

Isolator

A-ControlIndoor Unit

Neversplicethepowercableortheindoor-outdoorconnectioncable,otherwiseitmayresultinasmoke,afireorcommunicationfailure.

S1S2S3

Indoor/outdoor unit connection cable

Indoor unit

Unitpowersupply

Unitpowersupply

Outdoor unit

L1

L2

L3B

N

S1S2S3

L1

L2

L3

N

C BC

12

Remote controller


1:1 System (Indoor: PEA-200, 250) 1:2 System (Indoor: PEA-400, 500)

S1S2S3


Indoor unit

Unitpowersupply

Unitpowersupply

Outdoor unit No.1

L1

L2

L3B

N

S1S2S3

L1

L2

L3

N


C BC

S1S2S3


TB4-1

TB4-2

Unitpowersupply

Outdoor unit No.2

L1

L2

L3B

N

S1S2S3

C

12

Remote controller

OCH582B

15

8-2. SEPARATE INDOOR UNIT/OUTDOOR UNIT POWER SUPPLIESThe following illustrations show available connection patterns.The outdoor unit power supply patterns vary on models.

Simultaneous twin/triple system

Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.

<For models without heater>The optional indoor power supply terminal kit is required.

A

B

C

D

E

F

G

H

J

Outdoor unit power supplyEarth leakage breakerWiring circuit breaker or isolating switchOutdoor unitIndoor unit/outdoor unit connecting cablesRemote controllerIndoor unitOptionIndoor unit power supply

K Indoor unit earth

If the indoor and outdoor units have separate power supplies, refer to the table below.If the optional indoor power supply terminal kit is used, change the indoor unitelectrical box wiring referring to the figure in the right and the DIP switch settings of the outdoor unit control board.

Indoor power supply terminal kit (option)Indoor unit electrical box connector con-nection changeLabel affixed near each wiring diagramfor the indoor and outdoor unitsOutdoor unit DIP switch settings (whenusing separate indoor unit/outdoor unitpower supplies only)

Indoor unit specificationsRequired

Required

Required

Electric heater(For models withheater)

Connectors (connections when shippedfrom the factory are for indoor unit powersupplied from outdoor unit)

Indoor unit power supplied from outdoor unit(when shipped from factory)

If the indoor andoutdoor units haveseparate powersupplies, change theconnections of theconnectors as shownin the followingfigure.

Connectors

Indoor unitcontrol board

Separate indoor unit/outdoor unit powersupplies

Electric heater(For models withheater)

S1S2S3

LN

BLUEBLUE

YELLOWYELLOW

CND

CN01ORANGE

CN01ORANGE

S1S2S3

LN

YELLOWBLUE

BLUEYELLOW

CND

Indoor unitcontrol board

Note: There are 3 types of labels; A, B, and C. Affix the appropriate label to the units according to the wiring method.

ONOFF

Set the SW8-3 to ON.1 2 (SW8)

3

E

F

D G

K K

HG

HG

H

LN

LN

S1S2S3

S1S2S3

12

LN

S1S2S3

12

LN

S1S2S3

12

A B C B CJ

*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV). The breaker shall be provided to ensure disconnection of all active phase conductor of the supply.*2. Maximum 120 m*3.The 10 m wire is attached in the remote controller accessory. Maximum 500 m*4.The figures are NOT always against the ground.

Notes: 1. Wiring size must comply with the applicable local and national code.2. Power supply cables and indoor unit/outdoor unit connecting cables shall not be lighter than polychloroprene sheathed flexible cable. (Design 60245 IEC 57)3. Install an earth longer than other cables.

Indoor unit modelIndoor unit power supplyIndoor unit input capacity *1Main switch (Breaker)

Indoor unit power supplyIndoor unit power supply earthIndoor unit-Outdoor unit *2Indoor unit-Outdoor unit earthRemote controller-Indoor unit *3Indoor unit L-N *4Indoor unit-Outdoor unit S1-S2 *4Indoor unit-Outdoor unit S2-S3 *4Remote controller-Indoor unit *4

RP35–140~/N (single), 50 Hz, 230 V

16 A

3 o Min. 1.51 o Min. 1.52 o Min. 0.3

–2 o 0.3 (Non-polar)

230 V AC –

24 V DC12 V DC

Circ

uit

ratin

g

Wiri

ngW

ire N

o. o

size

(mm2 )

OCH582B

16

8-3. INDOOR – OUTDOOR CONNECTING CABLE

Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate connections).Intermediate connections can lead to communication errors if water enters the cables and causes insufficient insulation to earth or a poor electrical contact at the intermediate connection point.

Indoor unit-Outdoor unit

Indoor/Outdoor separatepower supply Max. 120m

2 o Min. 0.3

—Indoor unit-Outdoor unit earth

Wire No. o Size (E)

Note: The optional indoor power supply terminal kit is necessary.

WIRING SPECIFICATIONS FOR 220−240 V, 50 Hz(INDOOR-OUTDOOR CONNECTING CABLE)

Cross section of cable Wire size (mm2) Number of wires Polarity L (m)*5Round

2.5 3Clockwise : S1-S2-S3(Pay attention to stripe of yellow and green.)

(30)*1

Flat2.5 3

Not applicable(Because center wire has no cover finish)

Not applicable*4

Flat1.5 4

From left to right : S1-Open-S2-S3 (18)*2

Round2.5 4

Clockwise : S1-S2-S3-Open(Connect S1 and S3 to the opposite angle.)

(30)*3

Note: Power supply cords of appliances shall not be lighter than design 60245 IEC or 227 IEC.

*1 In case that cable with stripe of yellow and green is available.*2 In case of regular polarity connection (S1-S2-S3), wire size is 1.5 mm².*3 In case of regular polarity connection (S1-S2-S3).*4 In case that flat cables are connected as this picture, they can be used up to 30 m.*5 Mentioned cable length is just a reference value.

It may be different depending on the condition of installation, humidity or materials, etc.

-

(3C Flat cable × 2)

OCH582B

17

8-4. M-NET WIRING METHODPoints to note:(1)Outsidetheunit,transmissionwiresshouldstayawayfromelectricwiresinordertopreventelectromagneticnoisefrom

makinganinfluenceonthesignalcommunication.Placethematintervalsofmorethan5cm.Donotputtheminthesameconduittube.

(2)Terminalblock(TB7)fortransmissionwiresshouldneverbeconnectedto220–240Vpowersupply.Ifitisconnected,electronicpartsonM-NETP.C.boardmayburnout.

(3)Use2-core×1.25mm²shieldwire(CVVS,CPEVS)forthetransmissionwire.Transmissionsignalsmaynotbesentorreceivednormallyifdifferenttypesoftransmissionwiresareputtogetherinthesamemulti-conductorcable.Neverdothisbecausethismaycauseamalfunction.

ItisacceptableifM-NETwire(non-polar,2-cores)isarrangedinadditiontothewiringforA-control.

(4)EarthonlyoneofanyappliancesthroughM-NETtransmissionwire(shieldwire).Communicationerrormayoccurduetotheinfluenceofelectromagneticnoise.

“Ed”errorwillappearontheLEDdisplayofoutdoorunit. “0403”errorwillappearonthecentral-controlremotecontroller.

Iftherearemorethan2earthingspotsontheshieldwire,noisemayenterintotheshieldwirebecausetheearthwireandshieldwireform1circuitandtheelectricpotentialdifferenceoccursduetotheimpedancedifferenceamongearthingspots.Incaseofsinglespotearthing,noisedoesnotenterintotheshieldwirebecausetheearthwireandshieldwiredonotform1circuit.

Toavoidcommunicationerrorscausedbynoise,makesuretoobservethesinglespotearthingmethoddescribedintheinstallationmanual.

Centralized controller

Refrigerantaddress 00M-NETaddress 01

A-controlremotecontroller




Refrigerantaddress 00M-NETaddress 03Power

supply unit

Centralizedcontroller

M-NET transmission wire

O Bad example (Multi spot earthing of shield wire)

Good example 1 (Single spot earthing of shield wire)

Power supply unit

M-NET typeoutdoor unit











Good example 2 (Single spot earthing of shield wire)



Power supply unit

Power supply unit

OCH582B

18

8-4-3. Regulations in address settingsInthecaseofmultiplegroupingsystem,M-NETandrefrigerantaddresssettingsshouldbedoneasexplainedintheabovesection.Setthelowestnumberinthegroupfortheoutdoorunitwhoserefrigerantaddressis“00”asitsM-NETaddress.

Refrigerantaddressescanbeoverlappediftheyareinthedifferentgroup.

Note:IngroupB,M-NETaddressoftheoutdoorunitwhoserefrigerantaddressis“00”isnotsettotheminimuminthegroup.As“3”isrightforthissituation,thesettingiswrong.TakinggroupAasagoodsample,settheminimumM-NETaddressinthegroupfortheoutdoorunitwhoserefrigerantaddressis“00”.

8-4-1. M-NET address settingInA-controlmodels,M-NETaddressandrefrigerantaddressshouldbesetonlyfortheoutdoorunit.SimilartoCITYMULTIsystem,thereisnoneedtosettheaddressofoutdoorunitandremotecontroller.Toconstructacentralcontrolsystem,thesettingofM-NETaddressshouldbeconductedonlyupontheoutdoorunit.Thesettingrangeshouldbe1to50(thesameasthatoftheindoorunitinCITYMULTIsystem),andtheaddressnumbershouldbeconsecutivelysetinasamegroup.

Addressnumbercanbesetbyusingrotaryswitches(SW11for1stdigitandSW12for2nddigit),whichislocatedontheM-NETboardofoutdoorunit.(Initialsetting:alladdressesaresetto“0”.)

8-4-2. Refrigerant address settingInthecaseofmultiplegroupingsystem(multiplerefrigerantcircuitsin1group),indoorunitsshouldbeconnectedbyremotecontrollerwiring(TB5)andtherefrigerantaddressneedstobeset.Leavetherefrigerantaddressesto“00”ifthegroupset-tingisnotconducted.SettherefrigerantaddressbyusingDIPSW1-3to-6ontheoutdoorcontrollerboard.[Initialsetting:allswitchesareOFF.(Allrefrigerantaddressesare“00”.)]

1234567890 1234567890

1234567890 1234567890

1234567890

1234567890

1 2

~

50M-NET Address No.<Setting example>

Switchsetting

SW111stdigitSW122nddigit

OFF

ON

1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6

1 2 3 4 5 61 2 3 4 5 61 2 3 4 5 61 2 3 4 5 61 2 3 4 5 61 2 3 4 5 61 2 3 4 5 61 2 3 4 5 6

0Refrigerant address

OFF

ON

8

OFF

ON

1

OFF

ON

9

OFF

ON

10

OFF

ON

11

OFF

ON

12

OFF

ON

13

OFF

ON

14

OFF

ON

15

OFF

ON

2

OFF

ON

3

OFF

ON

4

OFF

ON

5

OFF

ON

6

OFF

ON

7


Group A Group B Group C


TB5





Refrigerantaddress 00M-NETaddress 04Power

supply unit


Power supply unit



TB5

Group A Group B







M-NET wiring(1)Use2-core×1.25mm²shieldwireforelectricwires. (Excludingthecaseconnectingtosystemcontroller.)(2)ConnectthewiretotheM-NETterminalblock.Connectonecoreofthetransmission

wire(non-polar)toAterminalandtheothertoB.Peeltheshieldwire,twisttheshieldparttoastringandconnectittoSterminal.

(3)Inthesystemwhichseveraloutdoorunitsarebeingconnected,theterminal(A,B,S)onM-NETterminalblockshouldbeindividuallywiredtotheotheroutdoorunit’sterminal,i.e.AtoA,BtoBandStoS.Inthiscase,chooseoneofthoseoutdoorunitsanddriveascrewtofixanearthwireontheplateasshownontherightfigure.

Transmissionwire

Shield part

M-NET terminal block Earth

wire

A B S

OCH582B

19

Unit: mm (in)

9 REFRIGERANT SYSTEM DIAGRAM


Heat exchangerThermistor TH6(2-phase pipe)

Thermistor TH7(Ambient)

Distributor

Accumulator

Compressor

Refrigerant GAS pipeconnection [25.4([1 inch)

Refrigerant LIQUID pipeP200 : connection [9.52([3/8 inch)P250 : connection [12.7([1/2 inch)

Stop valve(with service port)

4-way valve

Linear expansion valve A

Thermistor TH32(Comp, surface)

Muffler

Ball valve

#50Strainer

Oil return hole with strainer #40

Strainer#100

Strainer#100

Strainer#100

Refrigerant flow in coolingRefrigerant flow in heating

Charge plug(High pressure)

<Blazing>

Thermistor TH8(Control protection)

HEX

Stop valve

Thermistor TH3(Liquid)

LEV-A

High pressureswitch 63H

Charge plug(Low pressure)

OCH582B

20

9-2. START AND FINISH OF TEST RUN • Operationfromtheindoorunit Executethetestrunusingtheinstallationmanualfortheindoorunit. • OperationfromtheoutdoorunitByusingtheDIPswitchSW4onthecontrolboardofoutdoorunit,testruncanbestartedandfinished,anditsoperationmode(cooling/heating)canbesetup.

1Settheoperationmode(cooling/heating)usingSW4-2. 2TurnonSW4-1tostarttestrunwiththeoperationmodesetbySW4-2. 3TurnoffSW4-1tofinishthetestrun. • Theremaybeafaintknockingsoundaroundthemachineroomafterpowerissupplied.However, thisisnotaproblemwithproductbecausethelinearexpansionpipeisjustmovingtoadjust openingpulse. • Theremaybeaknockingsoundaroundthemachineroomforseveralsecondsaftercompressorstartsoperating.However,thisisnotaproblemwithproductbecauseitisgeneratedbythecheckvalveitselfduetoasmallpressuredifferenceintherefrigerantcircuit.

Note:The operation mode cannot be changed by SW4-2 during test run. (To change test run mode, stop the unit by SW4-1, change the operation mode and restart the test run by SW4-1.)

OFF1 2

ON

<SW4>

A B

C D

A Stop C OperationB Cooling D Heating

9-1. REFRIGERANT COLLECTING (PUMP DOWN)Whenrelocatingordisposingoftheindoor/outdoorunit,pumpdownthesystemfollowingtheprocedurebelowsothatnorefrig-erantisreleasedintotheatmosphere.1Turnoffthepowersupply(circuitbreaker).2Connectthelow-pressurevalveonthegaugemanifoldtothechargeplug(low-pressureside)ontheoutdoorunit.3Closetheliquidstopvalvecompletely.4Supplypower(circuitbreaker).

•Whenpowerissupplied,makesurethat“CENTRALLYCONTROLLED”isnotdisplayedontheremotecontroller.If“CEN-TRALLYCONTROLLED”isdisplayed,therefrigerantcollecting(pumpdown)cannotbecompletednormally.

•Start-upoftheindoor-outdoorcommunicationtakesabout3minutesafterthepower(circuitbreaker)isturnedon.Startthepump-downoperation3to4minutesafterthepower(circuitbreaker)isturnedon.

5Performtherefrigerantcollectingoperation(coolingtestrun).•Pushthepump-downSWPswitch(push-buttontype)onthecontrolboardoftheoutdoorunit.Thecompressorandventi-lators(indoorandoutdoorunits)startoperating(refrigerantcollectingoperationbegins).(LED1andLED2onthecontrolboardoftheoutdoorunitarelit.)

•Onlypushthepump-downSWPswitchiftheunitisstopped.However,eveniftheunitisstoppedandthepump-downSWPswitchispushedlessthan3minutesafterthecompressorstops,therefrigerantcollectingoperationcannotbeperformed.Waituntilthecompressorhasbeenstoppedfor3minutesandthenpushthepump-downSWPswitchagain.

6Fullyclosetheballvalveonthegaspipesideoftheoutdoorunitwhenthepressuregaugeonthegaugemanifoldshows0.05to0MPa[Gauge](approx.0.5to0kgf/cm²)andquicklystoptheairconditioner.•Becausetheunitautomaticallystopsinabout3minuteswhentherefrigerantcollectingoperationiscompleted(LED1off,LED2lit),besuretoquicklyclosethegasballvalve.However,ifLED1islit,LED2isoff,andtheunitisstopped,opentheliquidstopvalvecompletely,closethevalvecompletelyafter3minutesormorehavepassed,andthenrepeatstep5.(Openthegasballvalvecompletely.)

•Iftherefrigerantcollectingoperationhasbeencompletednormally(LED1off,LED2lit),theunitwillremainstoppeduntilthepowersupplyisturnedoff.

•Notethatwhentheextensionpipingisverylongwithalargerefrigerantamount,itmaynotbepossibletoperformapumpdownoperation.Inthiscase,userefrigerantrecoveryequipmenttocollectalloftherefrigerantinthesystem.

7Turnoffthepowersupply(circuitbreaker),removethegaugemanifold,andthendisconnecttherefrigerantpipes.

Warning:When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes.• If the refrigerant pipes are disconnected while the compressor is operating and the stop valve (ball valve) is open, the

pressure in the refrigeration cycle could become extremely high if air is drawn in, causing the pipes to burst, per-sonal injury, etc.

OCH582B

21

10 TROUBLESHOOTING

<Check code displayed by self-diagnosis and actions to be taken for service (summary)>Presentandpastcheckcodesarelogged,andtheycanbedisplayedonthewiredremotecontrollerandcontrolboardofout-doorunit.Actionstobetakenforservice,whichdependsonwhetherornotthetroubleisreoccurringinthefield,aresumma-rizedinthetablebelow.Checkthecontentsbelowbeforeinvestigatingdetails.

10-1. TROUBLESHOOTING

Unit conditions at service Check code Actions to be taken for service (summary)

The trouble is reoccurring.

Displayed

Not displayed

Judge what is wrong and take a corrective action according to “10-4. SELF-DIAGNOSIS ACTION TABLE”.

Conduct trouble shooting and ascertain the cause of thetrouble according to “10-5. TROUBLESHOOTING OF PROBLEMS”.

The trouble is not reoccurring.

Logged

Not logged

1Consider the temporary defects such as the work of protection devices in the refrigerant circuit including compressor, poor connection of wiring, noise, etc. Re-check the symptom, and check the installation environment, refrigerant amount, weather when the trouble occurred, matters related to wiring, etc. 2Reset check code logs and restart the unit after finishing service.3There is no abnormality in electrical component, controller board, remote controller, etc.

1Re-check the abnormal symptom.2Conduct trouble shooting and ascertain the cause of the trouble according to “10-5. TROUBLESHOOTING OF PROBLEMS”.3Continue to operate unit for the time being if the cause is not ascertained.4There is no abnormality concerning of parts such as electrical component, controller board, remote controller, etc.

10-2. CHECK POINT UNDER TEST RUN10-2-1. Before test run• Afterinstallationofindoorandoutdoorunits,pipingworkandelectricwiringwork,re-checkthatthereisnorefrigerantleak-age,loosenedconnectionsandincorrectpolarity.

• Measureimpedancebetweenthegroundandthepowersupplyterminalblock(L,N)ontheoutdoorunitby500VMeggerandcheckthatitis1.0M"orover.

• Donotuse500VMeggertoindoor/outdoorconnectingwireterminalblock(S1,S2,S3)andremotecontrollerterminalblock (1,2).Thismaycausemalfunction.• Makesurethattestrunswitch(SW4)issettoOFFbeforeturningonpowersupply.• Turnonpowersupply12hoursbeforetestruninordertoprotectcompressor.• Forspecificmodelswhichrequirehigherceilingsettingsorauto-recoveryfeaturefrompowerfailure,makeproperchangesofsettingsreferringtothedescriptionof“11.FUNCTIONSETTING”.Makesuretoreadoperationmanualbeforetestrun.(Especiallyitemstosecuresafety.)

OCH582B

22

F1 F2 F3 F4

unem ecivreS

rosruC:unem niaM

Test runInput maintenance info.Function settingCheckSelf check

F1 F2 F3 F4

Test run menu

CursorService menu:

Test runDrain pump test run

1Select"Service"fromtheMainmenu,andpressthe button.

2Select"Testrun"withthe F1 or F2 button,andpressthe button.

Select"Testrun"withthe F1 or F2 button,andpressthe button.

F1 F2 F3 F4

CoolPipe

AutoSwitch disp.

Mode Fan

RemainTest run

F1 F2 F3 F4

Remain

Vane

Coolmode:Checkthecoldairblowsout.Heatmode:Checkthewarmairblowsout.

Press the F1 button togo throughtheoperationmodes in theorderof "CoolandHeat".

Checktheautovanewiththe F1 F2 buttons.

Pressthe buttontoreturnto“Testrunoperation”.

Pressthe button.

Whenthetestruniscompleted,the“Testrunmenu”screenwillappear.Thetestrunwillautomaticallystopafter2hours.

Test run operation

Auto vane check

Pressthe buttonandopentheVanesettingscreen.

Functionbuttons

F1 F2 F3 F4

MENU RETURN SELECT ON/OFF

10-2-2. Test run for wired remote controller <PAR-30MAA> <PAR-31MAA>

Checktheoperationoftheoutdoorunit’sfan.

OCH582B

23

F1 F2 F3 F4

Error informationError codeError unit IURef. address Unt#Model nameSerial No.

ResetPage

Error informationContact informationDealer Tel

ResetPage

Reset error: Reset button


blinks

1 Checkcode,errorunit,refrigerantaddress,unitmodelname,andserialnumberwillappear.Themodelnameandserialnumberwillappearonlyif theinformationhasbeenregistered.

Pressthe F1 or F2 buttontogotothenextpage.

When an error occurs, the following screen will appear.Check the error status, stop the operation, and consult your dealer.

Contactinformation(dealer'sphonenumber)willappeariftheinformationhavebeenregistered.

F1 F2 F3 F4

F1 F2 F3 F4

Error information

Error reset

Error reset

Error codeError unit IURef. address Unt#Model nameSerial No.

ResetPage

Reset current error?

Error reset

OKCancel

Main menu:


blinks

2 Pressthe F4 buttonorthe buttontoresettheerrorthatisoccurring.

Errors cannot be reset while the ON/OFF operation is prohibited.

Select"OK"withthe F4 button.

Navigating through the screens•TogobacktotheMainmenu.......... button

<Error information>

OCH582B

24

F1 F2 F3 F4

Main

Main display:Cursor Page

Main menuRestrictionEnergy savingNight setbackFilter informationError information

blinks

Whilenoerrorsareoccurring,page2/2oftheerrorinformationcanbeviewedbyselecting"Errorinformation"fromtheMainmenu.Errorscannotberesetfromthisscreen.

<Checking the error information>

<Error history>

F1 F2 F3 F4

unem ecivreS

rosruC:unem niaM


F1 F2 F3 F4

Check menu

CursorService menu:

Error historyRefrigerant volume checkRefrigerant leak checkSmooth maintenanceRequest code

F1 F2 F3 F4

Error history

Page DeleteCheck menu:

Error Unt# dd/mm/yy

Error history

Cancel OK

Delete error history?

Error history

Check menu:

Error history deleted

2 Select"Errorhistory"withthe F1 or F2 button,andpressthe button.

Select"Check"withthe F1 or F2 button,andpressthe button.

3Select"Errorhistory"fromtheCheckmenu,andpressthe buttontoviewupto16errorhistoryrecords.

4recordsareshownperpage,andthetoprecordonthefirstpageindicatesthelatesterrorrecord.

Error history

4Todeletetheerrorhistory,pressthe F4 button(Delete)onthescreenthatshowserrorhistory.

Aconfirmationscreenwillappearaskingifyouwanttodeletetheerrorhistory.

Pressthe F4 button(OK)todeletethehistory.

"Errorhistorydeleted"willappearonthescreen.

Pressthe buttontogobacktotheCheckmenuscreen.

Deleting the error history

1 Select"Service"fromtheMainmenu,andpressthe button.

OCH582B

25

ON/OFF TEMP

FAN

VANEMODE

CHECK LOUVER

TEST RUN

AUTO STOP

AUTO START

h

min

TEST RUN

RESETSET CLOCK

7

5

6

2

3,4

10-2-3. Test run for wireless remote controller Measureanimpedancebetweenthepowersupplyterminalblockontheoutdoorunitandgroundwitha500VMeggerandcheckthatitisequaltoorgreaterthan1.0M".1Turnonthemainpowertotheunit.2Pressthebuttontwicecontinuously. (Startthisoperationfromthestatusofremotecontrollerdisplayturnedoff.)

Aandcurrentoperationmodearedisplayed.3Pressthe()buttontoactivatemode,thencheckwhethercoolairblowsoutfromtheunit.

4Pressthe()buttontoactivatemode,thencheckwhetherwarmairblowsoutfromtheunit.

5Pressthebuttonandcheckwhetherstrongairblowsoutfromtheunit.

6Pressthebuttonandcheckwhethertheautovaneoperatesproperly.

7PresstheON/OFFbuttontostopthetestrun.

Note:• Point the remote controller towards the indoor unit receiver

while following steps 2 to 7.• It is not possible to run in FAN, DRY or AUTO mode.

MODE

MODECOOL

HEAT

TEST RUN

FAN

VANE

TEST RUN

OCH582B

26

F1 F2 F3 F4

unem ecivreS

rosruC:unem niaM


F1 F2 F3 F4

kcehc fleS

:tceleS

Ref. address

sserddA

F1 F2 F3 F4

kcehc fleSRef. address

Return:teseR

Error Unt # CI.prG

F1 F2 F3 F4

Self check

Return:Reset

Ref. address

Error Grp.-- 　-Unt# --

When there is no error history

F1 F2 F3 F4

Self check

Delete error history?

Ref. address

Cancel OK

F1 F2 F3 F4

Self check

Return:

Ref. address

Error history deleted

2 Withthe F1 or F2 button,entertherefrigerantaddress,andpressthe button.

Select"Selfcheck"withthe F1 or F2 button,andpressthe button.


3 Checkcode,unitnumber,attributewillappear."-"willappearifnoerrorhistoryisavailable.

4 Resettingtheerrorhistory.

Pressthe F4 button(Reset)onthescreenthatshowstheerrorhistory.

Aconfirmationscreenwillappearaskingifyouwanttodeletetheerrorhistory.

Pressthe F4 button(OK)todeletetheerrorhistory.

Ifdeletionfails,"Requestrejected"willappear."Unitnotexist"willappearifnoindoorunitsthatarecorrespondtotheenteredaddressarefound.


•Toreturntothepreviousscreen....... button

10-3. HOW TO PROCEED "SELF-DIAGNOSIS"10-3-1. Self-diagnosis <PAR-30MAA> <PAR-31MAA>

OCH582B

27

Ifoperationscannotbecompletedwiththeremotecontroller,diagnosetheremotecontrollerwiththisfunction.

F1 F2 F3 F4

unem ecivreS

rosruC:unem niaM

Maintenance passwordRemote controller check

F1 F2 F3 F4

Remote controller check

:nigeB

Start checking?

F1 F2 F3 F4


:nigeB

Start checking?


Select "Remotecontroller check"with the F1 or F2 button,andpressthe button.

2 Select"Remotecontrollercheck"fromtheServicemenu,andpressthe but-tontostarttheremotecontrollercheckandseethecheckresults.

Tocancel theremotecontrollercheckandexit theRemotecontrollercheckmenuscreen,pressthe orthe button.

Theremotecontrollerwillnotrebootitself.

Check the remote controller display and see if anything is displayed (including lines). Nothing will appear on the remote controller display if the correct voltage (8.5–12 V DC) is not supplied to the remote control-ler. If this is the case, check the remote controller wiring and indoor units.

OK: Noproblemsare foundwith the remotecontroller.Checkotherpartsforproblems.

E3,6832:Thereisnoiseonthetransmissionline,ortheindoorunitoranotherremotecontroller is faulty.Check the transmission lineand theotherremotecontrollers.

NG(ALL0,ALL1):Send-receivecircuitfault.Remotecontrollerneedsreplacing.ERC: Thenumberofdataerrorsisthediscrepancybetweenthenumberof

bits inthedatatransmittedfromtheremotecontrollerandthatofthedatathatwasactually transmittedover thetransmission line. Ifdataerrorsarefound,checkthetransmission lineforexternalnoise inter-ference.

Remote controller check results screen

If the button ispressedafter the remotecontrollercheck resultsaredis-played,remotecontrollercheckwillend,andtheremotecontrollerwillautomati-callyrebootitself.

10-3-2. Remote controller check <PAR-30MAA> <PAR-31MAA>

3

OCH582B

28

•"CHECK"lights,andrefrigerantaddress"00"flashes.

•Checkthattheremotecontroller'sdisplayhasstoppedbeforecontinuing.

•Selecttherefrigerantaddressoftheindoorunitfortheself-diagnosis.

Note:Setrefrigerantaddressusingtheoutdoorunit’sDIPswitch(SW1).(Formoreinformation,seetheoutdoorunitinstallationmanual.)

•Ifanairconditionererroroccurs,theindoorunit'ssensoremitsanintermittentbuzzersound,theoperationlightflashes,andthecheckcodeisoutput.(Ittakes3secondsatmostforcheckcodetoappear.)

•Thecheckmodeiscancelled.

[Procedure]1.PresstheCHECKbuttontwice.

2.PresstheTEMPbuttons.

3.PointtheremotecontrolleratthesensorontheindoorunitandpresstheHOURbutton.

4.PointtheremotecontrolleratthesensorontheindoorunitandpresstheON/OFFbutton.

<Malfunction-diagnosis method at maintenance service>

10-3-3. Self-diagnosis <Wireless remote controller> <In case of trouble during operation>Whenamalfunctionoccurstoairconditioner,bothindoorunitandoutdoorunitwillstopandoperationlampblinkstoinformunusualstop.

ON/OFF TEMP

FAN

VANEMODE

CHECK LOUVER

TEST RUN

AUTO STOP

AUTO START

h

min

RESETSET CLOCK

CHECKCHECKdisplay

Temperaturebutton

CHECKbutton

Refrigerantaddressdisplay

HOURbutton

ON/OFFbutton

OCH582B

29

[Output pattern A] Errors detected by indoor unit

[Output pattern B]

E9

1. If the beeper does not sound again after the initial 2 beeps to confirm the self-check start signal was received and the OPERATION INDICATOR lamp does not come on, there are no error records.2. If the beeper sounds 3 times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 seconds)” after the initial 2 beeps to confirm the self-check start signal was received, the specified refrigerant address is incorrect.

OPERATIONINDICATORlamp flashpattern

Beep Beep Beep Beep Beep Beep Beep

OffApprox. 2.5 s

OnApprox. 3 s

On0.5 s

On0.5 s

On0.5 s

On0.5 s

OffApprox. 2.5 s

OnApprox. 3 s

On0.5 s

On0.5 s

· · · Repeated

Number of blinks/beeps in pattern indicates the checkcode in the following table (i.e., n=5 for “U2”)

Number of blinks/beeps in pattern indicatesthe check code in the following table

nth1st 2nd 3rd 1st 2nd

Self-checkstarts(Start signalreceived)

Beeper sounds[Output pattern B]

OPERATIONINDICATORlamp flashpattern

Beep Beep Beep Beep Beep Beep Beep

OffApprox. 2.5 s

On0.5 s

On0.5 s

On0.5 s

On0.5 s

OffApprox. 2.5 s

On0.5 s

On0.5 s

· · · Repeated

Number of blinks/beeps in pattern indicates the checkcode in the following table (i.e., n=5 for “P5”)

Number of blinks/beeps in pattern indicatesthe check code in the following table

nth1st 2nd 3rd 1st 2nd

Self-checkstarts(Start signalreceived)

Beeper sounds

• Refer to the following tables for details on the check codes.[Output pattern A]

Notes:

*The check code in the parenthesis indicates PAR-30/31MAA model.

Beeper sounds/OPERATIONINDICATOR lamp flashes Check code

Symptom Remark

(Number of times)

Wireless remote controller Wired remote controller

Beeper sounds/OPERATIONINDICATOR lamp flashes Check code

(Number of times)

Wireless remote controller Wired remote controller

1 P1 Intake sensor error

P9 Pipe (TH5) sensor error2 P2 Pipe (TH2) sensor error

3 E6,E7 Indoor/outdoor unit communication error4 P4 Drain sensor error/Float switch connector (CN4F) open

5P5 Drain pump errorPA Forced compressor stop (due to water leakage abnormality)

6 P6 Freezing/Overheating protection operation7 EE Communication error between indoor and outdoor units8 P8 Pipe temperature error9 E4, E5 Remote controller signal receiving error

10 –

11 –––

Errors detected by unit other than indoor unit (outdoor unit, etc.)

Symptom

1 Indoor/outdoor unit communication error

2(Transmitting error) (Outdoor unit)

3 Open/short of outdoor unit thermistors4 Compressor overcurrent interruption (When compressor locked)5 Abnormal high discharging temperature/insufficient refrigerant

6 Abnormal high pressure (63H operated)/Overheating protection operation

7 Abnormal temperature of heat sink8 Outdoor unit fan protection stop9 Compressor overcurrent interruption/Abnormal of power module10

11 Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit/Current sensor error

1213

U2

U5

UPU3,U4UF

U1,Ud (UD)*

U8U6

U9,UH

Others

––

––

14 Other errors (Refer to the technical manual for the outdoor unit.)

1214

Fb (FB)*PL

Indoor unit control system error (memory error, etc.)

– E0, E3– E1, E2 Remote controller control board error

Remote controller transmission errorAbnormality of refrigerant circuit

Compressor overcurrent interruption

As for indoor unit, refer to indoor unit's service manual.

– –

OCH582B

30

10-4. SELF-DIAGNOSIS ACTION TABLE<Abnormalities detected when the power is put on>

Note:RefertoindoorunitsectionforcodesstartingwithPandE. Check Code Abnormal points and detection method Case Judgment and action

None ―

1Novoltageissuppliedtoterminalblock(TB1)ofoutdoorunit.a)Powersupplybreakeristurnedoff.

b)Contactfailureordisconnectionofpowersupplyterminal

c)Openphase(L2orNphase)

2Electricpowerisnotsuppliedtopowersupplyterminalofoutdoorpowercircuitboard.a)Contactfailureofpowersupplyterminal

b)Openphaseontheoutdoorpowercircuitboard

(Disconnectionofterminalonoutdoorpowercircuitboard)

3Electricpowerisnotsuppliedtooutdoorcontrollercircuitboard.a)Disconnectionofconnector(CNDC)

4Disconnectionofreactor(DCLorACL4)

5Disconnectionofoutdoornoisefil-tercircuitboardorpartsfailureinoutdoornoisefiltercircuitboard.

6Defectiveoutdoorpowercircuitboard

7Openofrushcurrentprotectresis-tor(RS)

8Defectiveoutdoorcontrollercircuitboard

1Checkfollowingitems.

a)Powersupplybreaker

b)Connectionofpowersupplyterminalblock.(TB1)

c)Connectionofpowersupplyterminalblock.(TB1)

2Checkfollowingitems.

a)Connectionofpowersupplyterminalblock.(TB1)

b)Connectionofterminalonoutdoorpowercircuitboard

3 Check connectionoftheconnector(CNDC)ontheoutdoorcontrollercircuitboard.

Check connectionoftheconnectorCNDC onthenoisefiltercircuitboard.Referto"10-9.TESTPOINTDIAGRAM".

4 Check connectionofreactor.(DCLorACL4)Referto"8.WIRINGDIAGRAM".

5a)Checkconnectionofoutdoornoisefiltercircuitboard.b)Replaceoutdoornoisefiltercircuit

board.Referto"10-9.TESTPOINTDIAGRAM".

6Replaceoutdoorpowercircuitboard.

7Replacerushcurrentprotectresistor(RS). Powercircuitboardmightbeshort-circuit.Checkthepowercircuitboard.(Referto"10-9.TESTPOINTDIAGRAM".)

8Replacecontrollerboard(Whenitemsabovearecheckedbuttheunitscannotberepaired.)

F5(5201)

63H connector openAbnormalif63Hconnectorcircuitisopenfor3minutescontinuouslyafterpowersupply.63H:High-pressureswitch

1Disconnectionorcontactfailureof63Hconnectoronoutdoorcontrol-lercircuitboard

2Disconnectionorcontactfailureof63H

363Hisworkingduetodefectiveparts.


1Checkconnectionof63Hconnectoronoutdoorcontrollercircuitboard.

Referto"10-9.TESTPOINTDIAGRAM".2Checkthe63Hsideofconnectingwire.

3Checkcontinuitybytester. Replacethepartsifthepartsaredefec-tive.

4Replaceoutdoorcontrollercircuitboard.

OCH582B

31

Check Code Abnormal points and detection method Case Judgment and action

EA(6844)

Miswiring of indoor/outdoor unit connecting wire1.Outdoorcontrollercircuitboardcanautomaticallycheckthenumberofconnectedindoorunits.Abnormalifthenumbercannotbecheckedautomaticallyduetomiswiringofindoor/outdoorunitconnectingwire,etc.afterpoweristurnedonfor4minutes.

2.Abnormalifoutdoorcontrollercircuitboardrecognizesexcessivenumberofindoorunits.

1Contactfailureormiswiringofindoor/outdoorunitconnectingwire

2Diameterorlengthofindoor/out-doorunitconnectingwireisoutofspecifiedcapacity.

3Excessivenumberofindoorunitsareconnectedto1outdoorunit.(4unitsormore)

4Defectivetransmittingreceivingcircuitofoutdoorcontrollercircuitboard

5Defectivetransmittingreceivingcircuitofindoorcontrollerboard

6Defectiveindoorpowerboard72ormoreoutdoorunitshaverefrigerantaddress“0”.

(Incaseofgroupcontrol)8Noisehasenteredintopowersup-plyorindoor/outdoorunitconnect-ingwire.

1Checkdisconnectionorloosenessorpolarityofindoor/outdoorunitconnectingwireofindoorandoutdoorunits.

2Checkdiameterandlengthofindoor/out-doorunitconnectingwire.

Totalwiringlength:80m(includingwiringconnectingeachindoorunitandbetweenindoorandoutdoorunit)AlsocheckiftheconnectionorderofflatcableisS1,S2,S3.

3Checkthenumberofindoorunitsthatareconnectedtooneoutdoorunit.(IfEAisdetected)

4–6Turnthepoweroffonce,andonagaintocheck.

Replaceoutdoorcontrollercircuitboard,indoorcontrollerboardorindoorpowerboardifabnormalityoccursagain.

7Checkifrefrigerantaddresses(SW1-3toSW1-6onoutdoorcontrollercircuitboard)areoverlappingincaseofgroupcontrolsystem.

8Checktransmissionpath,andremovethecause.

Note:Thedescriptionsabove,1–8,areforEA,EbandEC.

Eb(6845)

Miswiring of indoor/outdoor unit connecting wire (converse wiring or disconnection)Outdoorcontrollercircuitboardcanautomaticallysettheunitnumberofindoorunits.Abnormaliftheindoorunitnumbercannotbesetwithin4minutesafterpoweronbecauseofmiswiring(conversewiringordisconnection)ofindoor/outdoorunitconnectingwire.

1Contactfailureormiswiringofindoor/outdoorunitconnectingwire

2Diameterorlengthofindoor/out-doorunitconnectingwireisoutofspecifiedcapacity.

4Defectivetransmittingreceivingcircuitofoutdoorcontrollercircuitboard

5Defectivetransmittingreceivingcir-cuitofindoorcontrollerboard

6Defectiveindoorpowerboard72ormoreoutdoorunitshaverefrigerantaddress“0”.


EC(6846)

Start-up time overTheunitcannotfinishstart-upprocesswithin4minutesafterpoweron.

1Contactfailureofindoor/outdoorunitconnectingwire

2DiameterorlengthofIndoor/out-doorunitconnectingwireisoutofspecifiedcapacity.

72ormoreoutdoorunitshaverefrigerantaddress“0”.


OCH582B

32

<Abnormalities detected while unit is operating> Check Code Abnormal points and detection method Case Judgment and action

U1(1302)

High pressure (High-pressure switch 63H operated)Abnormalifhigh-pressureswitch63H(4.15MPa)operatedduringcompressoroperation.

1Shortcycleofindoorunit2Cloggedfilterofindoorunit3Decreasedairflowcausedbydirtofindoorfan

4Dirtofindoorheatexchanger5Lockedindoorfanmotor6Malfunctionofindoorfanmotor7Defectiveoperationofstopvalve(Notfullopen)

8Cloggedorbrokenpipe9Lockedoutdoorfanmotor0 Malfunctionofoutdoorfanmotor1Shortcycleofoutdoorunit2Dirtofoutdoorheatexchanger3Decreasedairflowcausedbydefectiveinspectionofoutsidetemperaturethermistor

(Itdetectslowertemperaturethanactualtemperature.)

4Disconnectionorcontactfailureofconnector(63H)onoutdoorcon-trollerboard

5Disconnectionorcontactfailureof63Hconnection

6 Defectiveoutdoorcontrollerboard7Defectiveactionoflinearexpan-sionvalve

8Malfunctionoffandrivingcircuit

1–6Checkindoorunitandrepairdefect.

7Checkifstopvalveisfullyopen.

8Checkpipingandrepairdefect.9–2Checkoutdoorunitandrepairdefect.

3CheckthedetectedtemperatureofoutsidetemperaturethermistoronLEDdisplay.

(SW2onA-ControlServiceTool:Referto "10-10.FUNCTIONOFSWITCHES,CONNECTORSANDJUMPERS".)

4–6TurnthepoweroffandcheckifF5isdisplayedwhenthepoweristurnedonagain.

WhenF5isdisplayed,referto“Judgmentandaction”forF5.

7Checklinearexpansionvalve. Referto"10-6.HOWTOCHECKTHEPARTS".

8Replaceoutdoorcontrollerboard.

U2

(TH32:1132)

High comp. surface temperature1.Abnormalifcomp.surfacetemperature

thermistor(TH32)exceeds125°C or110°Ccontinuouslyfor5minutes.Abnormalifcondenser/evaporatortemperaturethermistor(TH5)exceeds40°Cduringdefrostingandcomp.surfacetemperaturethermistor(TH32)exceeds110°C.

2.Abnormalifdischargesuperheat(Cooling:TH32−TH5/Heating:TH32−TH6)increases.AlltheconditionsinAorBaredetectedsimultaneouslyfor10minutescontinuous-lyafter6minutespastfromcompressorstart-up(includingthethermostatindica-tionorrecoveryfromdefrosting).<ConditionA>•Heatingmode•Whendischargesuperheatislessthan70°C.•WhentheTH6tempismorethanthevalueobtainedbyTH7−5:.

•WhenthecondensingtempofTH5islessthan35:.

<ConditionB>•Duringcompressoroperation(CoolingandHeating)

•Whendischargesuperheatislessthan80°CinCooling.

•Whendischargesuperheatislessthan90°CinHeating.

•WhencondensingtempofTH6ismorethan−40:.(InCoolingonly.)

3.Abnormalifcomp.surfacetemperaturethermistor(TH32)exceeds125°Cor110°Ccontinuouslyfor5minutes.

1Overheatedcompressoroperationcausedbyshortageofrefrigerant

2Defectiveoperationofstopvalve3Defectivethermistor4Defectiveoutdoorcontrollerboard

5Defectiveactionoflinearexpan-sionvalve

1Checkintakesuperheat. Checkleakageofrefrigerant. Chargeadditionalrefrigerant.2Checkifstopvalveisfullyopen.34TurnthepoweroffandcheckifU3is

displayedwhenthepowerisonagain. WhenU3isdisplayed,referto“Judgment

andaction”forU3.5Checklinearexpansionvalve. Referto"10-6.HOWTOCHECKTHEPARTS".

U3(TH32:5132)

Open/short circuit of comp. surface thermistor (TH32)Abnormalifopen(−20°Corless)orshort(217°Cormore)isdetectedduringcompressoroperation.(Detectionisinoperativefor10minutesofcompressorstartingprocessandfor10minutesafterandduringdefrosting.)

1Disconnectionorcontactfailureofconnector(TH32)ontheoutdoorcontrollercircuitboard

2Defectivethermistor3Defectiveoutdoorcontrollercircuitboard

1 Checkconnectionofconnector(TH32)ontheoutdoorcontrollercircuitboard.Checkbreakingoftheleadwireforthermistor(TH32).Referto"10-9.TESTPOINTDIAGRAM".

2 Checkresistancevalueofthermistor(TH32)ortemperaturebymicroprocessor.(Thermistor/TH32:Referto"10-6.HOWTOCHECKTHEPARTS".)(SW2onA-ControlServiceTool:Referto"10-10.FUNCTIONOFSWITCHES,CONNECTORSANDJUMPERS".)

3Replaceoutdoorcontrollerboard.

OCH582B

33


U4(TH3:5105)(TH6:5107)(TH7:5106)(TH8:5110)

Open/short of outdoor unit thermistors (TH3, TH6, TH7, and TH8)Abnormalifopenorshortisdetectedduringcompressoroperation.OpendetectionofthermistorsTH3andTH6isinoperativefor10secondsto10minutesaftercompressorstartingand10minutesafterandduringdefrosting.Note:Checkwhichunithasabnormalityin

itsthermistorbyswitchingthemodeofSW2.(PAC-SK52ST)

(Referto"10-10.FUNCTIONOFSWITCHES,CONNECTORSANDJUMPERS".)

1Disconnectionorcontactfailureofconnectors

Outdoorcontrollercircuit board:TH3,TH6/TH7 Outdoorpowercircuitboard:CN32Defectivethermistor3Defectiveoutdoorcontrollercircuitboard

1 Checkconnectionofconnector(TH3,TH6/TH7)ontheoutdoorcontrollercircuitboard.Checkconnectionofconnector(CN3)ontheoutdoorpowercircuitboard.Checkbreakingoftheleadwireforthermistor(TH3,TH6,TH7,TH8).Referto"10-9.TESTPOINTDIAGRAM"

2 Checkresistancevalueofthermistor(TH3,TH6,TH7,TH8)orchecktemperaturebymicroprocessor.(ThermistorTH3,TH6,

TH7,TH8:Referto"10-6.HOWTOCHECKTHEPARTS".)

(SW2onA-ControlServiceTool:Referto"10-10.FUNCTIONOFSWITCHES,CONNECTORSANDJUMPERS.)

3Replaceoutdoorcontrollercircuitboard.Note: Emergencyoperationisavailable

incaseofabnormalitiesofTH3,TH6andTH7.Referto"10-8.EMERGENCYOPERATION".

U5(4230)

Temperature of heat sinkAbnormalifheatsinkthermistor(TH8)detectstemperatureindicatedbelow.P200/250Y ········································90:

1Theoutdoorfanmotorislocked.2Failureofoutdoorfanmotor3Airflowpathisclogged.4Riseofambienttemperature5Defectivethermistor6Defectiveinputcircuitofoutdoorpowercircuitboard

7Failureofoutdoorfandrivecircuit

12Checkoutdoorfan.3Checkairflowpathforcooling.4Checkifthereissomethingwhichcauses

temperaturerisearoundoutdoorunit.(Upperlimitofambienttemperatureis46°C.)Turnoffpower,andonagaintocheckifU5isdisplayedwithin30minutes.IfU4isdisplayedinsteadofU5,followtheactiontobetakenforU4.

5Checkresistancevalueofthermistor(TH8)ortemperaturebymicrocomputer.(Thermistor/TH8:Referto"10-6.HOWTOCHECKTHEPARTS".)(SW2onA-ControlServiceTool:Referto "10-10.FUNCTIONOFSWITCHES,CONNECTORSANDJUMPERS".)

6Replaceoutdoorpowercircuitboard.7Replaceoutdoorcontrollercircuitboard.

U6(4250)

Power moduleCheckabnormalitybydrivingpowermoduleincaseovercurrentisdetected.(UForUPerrorcondition)

1Outdoorstopvalveisclosed.2Decreaseofpowersupplyvoltage3Looseness,disconnectionorconverseofcompressorwiringconnection

4Defectivecompressor

5Defectiveoutdoorpowercircuitboard

1Openstopvalve.2Checkfacilityofpowersupply.3Correctthewiring(U•V•Wphase)tocompressor.Referto"10-9.TESTPOINTDIAGRAM".(Outdoorpowercircuitboard).

4Checkcompressorreferringto"10-6.HOWTOCHECKTHEPARTS".


U8(4400)

Outdoor fan motorAbnormalifrotationalfrequencyofthefanmotorisnotdetectedduringDCfanmotoroperation.Fanmotorrotationalfrequencyisabnormalif;•100rpmorbelowdetectedcontinuouslyfor15secondsat20:ormoreoutsideairtemperature.

•50rpmorbelowor1500rpmormoredetectedcontinuouslyfor1minute.

1FailureintheoperationoftheDCfanmotor2Failureintheoutdoorcircuitcontrollerboard

1CheckorreplacetheDCfanmotor.

2Checkthevoltageoftheoutdoorcircuitcontrollerboardduringoperation.3 Replacetheoutdoorcircuitcontrollerboard.

(whenthefailureisstillindicatedevenafterperformingtheaction1above.)

Thermistors Open detection Short detectionSymbol NameTH3TH6TH7TH8

−40: or below−40: or below−40: or below−27: or below

90: or above90: or above90: or above

Thermistor <Liquid>Thermistor <2-phase pipe>

Thermistor <Ambient>Thermistor <Heat sink> 102: or above

( )

OCH582B

34


U9(4220)

Detailedcodes

Tofindoutthedetailhistory(latest)aboutU9error,turnONSW2-1,2-2and2-6.Referto"10-10.FUNCTIONOFSWITCHES,CONNECTORSANDJUMPERS".

01

Overvoltage error•IncreaseinDCbusvoltagetoP200/250Y:760V

1Abnormalincreaseinpowersourcevoltage

2Disconnectionofcompressorwiring

3Defectiveoutdoorpowercircuitboard4Compressorhasagroundfault.

1Checkthefieldfacilityforthepowersupply.

2Correctthewiring(U.V.Wphase)tocompressor.Referto"10-9.TESTPOINTDIAGRAM"(Outdoorpowercircuitboard).

3Replaceoutdoorpowercircuitboard.4Checkcompressorforelectricalinsula-

tion.Replacecompressor.

02

Undervoltage error•InstantaneousdecreaseinDCbusvoltagetoP200/250Y:400V

1Decreaseinpowersourcevoltage,instantaneousstop.

2Defective52Cdrivecircuitinoutdoorpowercircuitboard

3DisconnectionorlooseconnectionofrushcurrentprotectresistorRS

4DefectiverushcurrentprotectresistorRS

1Checkthefieldfacilityforthepowersupply.2Replaceoutdoorpowercircuitboard.

3CheckRSwiring.

4ReplaceRS.

04

Input current sensor error/L1-phase open error•Decreaseininputcurrentthroughoutdoorunitto0.1Aonlyifoperationfrequencyismorethanorequalto40Hzorcompressorcurrentismorethanorequalto6A.

1L1-phaseopen2Disconnectionorlooseconnection

betweenTB1andoutdoornoisefiltercircuitboard

3 DisconnectionorlooseconnectionofCN5ontheoutdoorpowercircuitboard/CNCTontheoutdoornoisefilterboard

4DefectiveACCT(ACcurrenttrans)ontheoutdoornoisefiltercircuitboard

5Defectiveinputcurrentdetectioncircuitinoutdoorpowercircuitboard


1 Checkthefieldfacilityforthepowersupply.2CheckthewiringbetweenTB1andoutdoornoisefiltercircuitboard. 3CheckCN5/CNCTwiring.

4 Replaceoutdoornoisefiltercircuitboard.



08

Abnormal power synchronous signal•Noinputofpowersynchronoussignaltopowercircuitboard

•Powersynchronoussignalof44Hzorless,or65Hzormoreisdetectedonpowercircuitboard.

1Distortionofpowersourcevoltage,noisesuperimposition.

2Disconnectionorlooseconnectionofearthwiring

3DisconnectionorlooseconnectionofCN2ontheoutdoorpowercircuitboard/controllercircuitboard

4Defectivepowersynchronoussignalcircuitinoutdoorcontrollercircuitboard

5Defectivepowersynchronoussignalcircuitinoutdoorpowercircuitboard

1 Checkthefieldfacilityforthepowersupply.2Checkearthwiring.

3CheckCN2wiring.



10

PFC error (Overvoltage/Undervoltage/Overcurrent)•PFCdetectedanyofthefol-lowing:a)IncreaseofDCbusvoltageto420V.

b)DecreaseinPFCcontrolvoltageto12VDCorlower.

c)Increaseininputcurrentto50Apeak.(Formodelsequippedwithsingle-phasePFConly)

NotapplicableforP200/250Ymodel. ChecktheswitchsettingforModelSelectontheoutdoorcontrollercircuitboard.

20

PFC/IGBT error (Undervoltage)•WhenCompressorisrunning,DCbusvoltagestaysat310Vorlowerforconsecutive10seconds

NotapplicableforP200/250Ymodel. ChecktheswitchsettingforModelSelectontheoutdoorcontrollercircuitboard.

Continuetothenextpage

OCH582B

35


Ud(UD)*(1504)

Over heat protectionAbnormalifoutdoorpipethermistor(TH3)detects70: ormoreduringcompressoroperation.

1Defectiveoutdoorfan(fanmotor)orshortcycleofoutdoorunitduringcoolingoperation

2Defectiveoutdoorpipethermistor(TH3)

3Defectiveoutdoorcontrollerboard

1Checkoutdoorunitairpassage.

23Turnthepoweroffandonagaintocheckthecheckcode.IfU4isdisplayed,followtheU4processingdirection.

*ThecheckcodeintheparenthesisindicatesPAR-30/31MAAmodel.

UF(4100)

Compressor overcurrent interruption (When compressor locked)AbnormalifovercurrentofDCbusorcompressorisdetectedwithin30secondsaftercompressorstartsoperating.

1Stopvalveisclosed.2Decreaseofpowersupplyvoltage3Looseness,disconnectionorcon-verseofcompressorwiringcon-nection

4Defectivecompressor

5Defectiveoutdoorpowerboard6DIPswitchsettingdifferenceofoutdoorcontrollercircuitboard

1Openstopvalve.2Checkfacilityofpowersupply.3Correctthewiring(U•V•Wphase)tocompressor.Referto"10-9.TESTPOINTDIAGRAM"(Outdoorpowercircuitboard).

4Checkcompressor. Referto"10-6.HOWTOCHECKTHE

PARTS".5Replaceoutdoorpowercircuitboard.6ChecktheDIPswitchsettingofoutdoorcontrollercircuitboard.Referto"ModelSelect"in"(1)Functionofswitches"in"10-10.FUNCTIONOFSWITCHES,CONNECTORSANDJUMPERS".

UH(5300)

Current sensor error or input current error• Abnormalifcurrentsensordetects−1.0Ato1.0Aduringcompressoroperation.(Thiserrorisignoredincaseoftestrunmode.)

1Disconnectionofcompressorwiring

2Defectivecircuitofcurrentsensoronoutdoorpowercircuitboard

3Decreaseofpowersupplyvoltage

1Correctthewiring(U•V•Wphase)tocompressor.Referto"10-9.TESTPOINTDIAGRAM"(Outdoorpowercircuitboard).


3Checkthefacilityofpowersupply.

UL(1300)

Low pressureAbnormalifthefollowingconditionsaredetectedforcontinuously3minutesaftercompressorstartsheatingoperatingfor10minutes.1.HeatingmodeDetectionmode1TH7−TH3[4°CandTH5−Indoorroomtemperature[2°CDetectionmode2TH7−TH3[2°CandTH5−Indoorroomtemperature[4°CandTH2−Indoorroomtemperature[4°C

2.CoolingmodeTH6−TH7[2°CandTH3−TH7[2°CandIndoorroomtemperature−Indoorliquidpipetemperature(TH2)[5°C

ThermistorTH3:OutdoorliquidpipetemperatureTH5:Indoorcond./eva.temperatureTH6:Outdoor2-phasepipetemperatureTH7:Ambienttemperature

1Stopvalveofoutdoorunitisclosedduringoperation.

2Leakageorshortageofrefrigerant

3Malfunctionoflinearexpansionvalve

4Cloggingwithforeignobjectsinrefrigerantcircuit

Note:Cloggingoccursinthepartswhichbecomebelowfreezingpointwhenwaterentersinrefrigerantcircuit.

1Checkstopvalve.

2Checkintakesuperheat.Checkleakageofrefrigerant.Checkadditionalrefrigerant.

3Checklinearexpansionvalve.Referto"10-6.HOWTOCHECKTHEPARTS".

4Afterrecoveringrefrigerant,removewaterfromentirerefrigerantcircuitundervacu-ummorethan1hour.

UP(4210)

Compressor overcurrent interruptionAbnormalifovercurrentDCbusorcompres-sorisdetectedaftercompressorstartsoper-atingfor30seconds.

1Stopvalveofoutdoorunitisclosed.

2 Decreaseofpowersupplyvoltage3Looseness,disconnectionorcon-verseofcompressorwiringcon-nection

4Defectivefanofindoor/outdoorunits

5Shortcycleofindoor/outdoorunits6Defectiveinputcircuitofoutdoorcontrollerboard

7Defectivecompressor8Defectiveoutdoorpowercircuitboard

9DIPswitchsettingdifferenceofoutdoorcontrollercircuitboard

1Openstopvalve.2Checkfacilityofpowersupply.3Correctthewiring(U•V•Wphase)tocom-pressor.Referto"10-9.TESTPOINTDIAGRAM".(Outdoorpowercircuitboard).

4Checkindoor/outdoorfan.5Solveshortcycle.6Replaceoutdoorcontrollercircuitboard.7Checkcompressor.Referto"10-6.HOWTOCHECKTHEPARTS".

Beforethereplacementoftheoutdoorcontrollercircuitboard,disconnectthewiringtocompressorfromtheoutdoorpowercircuitboardandchecktheoutputvoltageamongphases,U,V,W,duringtestrun.Nodefectonboardifvoltageamongphases(U-V,V-WandW-U)issame.Makesuretoperformthevoltagecheckwithsameperformingfrequency.8Replaceoutdoorpowercircuitboard9ChecktheDIPswitchsettingofoutdoorcontrollercircuitboard

OCH582B

36


E0orE4

Remote controller transmission error (E0)/signal receiving error (E4)1Abnormalifmainorsubremotecontrollercannotreceivenormallyanytransmissionfromindoorunitofrefrigerantaddress“0”for3minutes.

(Checkcode:E0)2Abnormalifsubremotecontrollercouldnotreceiveanysignalfor2minutes.(Checkcode:E0)

1Abnormalifindoorcontrollerboardcannotreceivenormallyanydatafromremotecontrollerboardorfromotherindoorcon-trollerboardfor3minutes.(Checkcode:E4)

2Indoorcontrollerboardcannotreceiveanysignalfromremotecontrollerfor2min-utes.(Checkcode:E4)

1Contactfailureattransmissionwireofremotecontroller

2Allremotecontrollersaresetas“sub”remotecontroller.Inthiscase,E0isdisplayedonremotecontroller,andE4isdisplayedatLED(LED1,LED2)ontheoutdoorcontrollercircuitboard.

3Miswiringofremotecontroller4Defectivetransmittingreceivingcircuitofremotecontroller

5Defectivetransmittingreceivingcircuitofindoorcontrollerboardofrefrigerantaddress“0”

6Noisehasenteredintothetrans-missionwireofremotecontroller.

1Checkdisconnectionorloosenessofindoorunitortransmissionwireofremotecontroller.

2Setoneoftheremotecontrollers“main”ifthereisnoproblemwiththeactionabove.

3Checkwiringofremotecontroller.•Totalwiringlength:maximum500m(Donotusecableo3ormore.)•Thenumberofconnectingindoorunits:maximum16units

•Thenumberofconnectingremotecon-troller:maximum2units

Ifthecauseoftroubleisnotanyof1–3above,4Diagnoseremotecontrollers.

a)When“RCOK”isdisplayed,remotecontrollershavenoproblem.Turnthepoweroff,andonagaintocheck.Ifabnormalitygeneratesagain,replaceindoorcontrollerboard.

b)When“RCNG”isdisplayed,replaceremotecontroller.

c)When“RCE3”or“ERC00–66”isdis-played,noisemaybecausingabnor-mality.

Note:Iftheunitisnotnormalafterreplacingindoorcontrollerboardingroupcontrol,indoorcon-trollerboardofaddress“0”maybeabnormal.

E1orE2

Remote controller control board1Abnormalifdatacannotbenormallyreadfromthenonvolatilememoryoftheremotecontrollercontrolboard.

(Checkcode:E1)2Abnormaliftheclockfunctionofremotecontrollercannotbenormallyoperated.

(Checkcode:E2)

1Defectiveremotecontroller 1Replaceremotecontroller.

E3orE5

Remote controller transmission error (E3)/signal receiving error (E5)1Abnormalifremotecontrollercouldnotfindblankoftransmissionpathfor6secondsandcouldnottransmit.(Checkcode:E3)

2Remotecontrollerreceivestransmitteddataatthesametime,comparesthedata,andwhendetectingit,judgesdifferentdatatobeabnormal30continuoustimes.(Checkcode:E3)

1Abnormalifindoorcontrollerboardcouldnotfindblankoftransmissionpath.

(Checkcode:E5)2Indoorcontrollerboardreceivestransmitteddataatthesametime,comparesthedata,andwhendetectingit,judgesdifferentdatatobeabnormal30continuoustimes.(Checkcode:E5)

12remotecontrollersaresetas“main.”(Incaseof2remotecontrollers)

2Remotecontrollerisconnectedwith2indoorunitsormore.

3Repetitionofrefrigerantaddress4Defectivetransmittingreceivingcircuitofremotecontroller


6Noisehasenteredintotransmissionwireofremotecontroller.

1Setaremotecontrollertomain,andtheothertosub.

2Remotecontrollerisconnectedwithonly1indoorunit.

3Theaddresschangestoaseparatesetting.

4−6Diagnoseremotecontroller.a)When“RCOK”isdisplayed,remotecontrollershavenoproblem.

Turnthepoweroff,andonagaintocheck.

Whenbecomingabnormalagain,replaceindoorcontrollerboard.

b)When“RCNG”isdisplayed,replaceremotecontroller.

c)When“RCE3”or“ERC00–66”isdisplayed,noisemaybecausingabnormality.

OCH582B

37


E6(6840

Indoor/outdoor unit communication error (Signal receiving error)1Abnormalifindoorcontrollerboardcouldnotreceiveanysignalnormallyfor6minutesafterturningthepoweron.

2Abnormalifindoorcontrollerboardcouldnotreceiveanysignalnormallyfor3minutes.

3Considertheunitasabnormalunderthefollowingcondition.When2ormoreindoorunitsareconnectedtoanoutdoorunit,indoorcontrollerboardcouldnotreceiveasignalfor3minutesfromoutdoorcontrollercircuitboard,asignalwhichallowsoutdoorcontrollercircuitboardtotransmitsignals.

1Contactfailure,shortcircuitormiswiring(conversewiring)ofindoor/outdoorunitconnectingwire

2Defectivetransmittingreceivingcircuitofoutdoorcontrollercircuitboard.

3Defectivetransmittingreceivingcircuitofindoorcontrollerboard.

4Noisehasenteredintoindoor/outdoorunitconnectingwire.

5Defectivefanmotor6Defectiverushcurrentresistorofoutdoorpowercircuitboard

CheckLEDdisplayonoutdoorcontrollercircuitboard.(ConnectA-Controlservicetool(PAC-SK52ST)) RefertoEA−ECitemifLEDdisplaysEA−AC.1Checkdisconnectingorloosenessofindoor/outdoorunitconnectingwireofindoorunitoroutdoorunit.

Checkalltheunitsincaseoftwin/triple/quadrupleindoorunitsystem.

2–4 Turnthepoweroff,andonagaintocheck.Ifabnormalitygeneratesagain,replaceindoorcontrollerboardoroutdoorcontroller circuitboard.Note: Otherindoorcontrollerboardmayhave

defectinthecaseoftwin/triple/quadrupleindoorunitsystem.

5Turnthepoweroff,anddetachfanmotorfromconnector(CNF1,2).Thenturnthepoweronagain.

Ifabnormalityisnotdisplayed,replacefanmotor.

Ifabnormalityisdisplayed,replaceoutdoorcontrollercircuitboard.

6Checktherushcurrentresistoronoutdoorpowercircuitboardwithtester.Ifopenisdetected,replacethepowercircuitboard.

E7

Indoor/outdoor unit communication error (Transmitting error)Abnormalif“1”receivingisdetected30timescontinuouslythoughindoorcontrollerboardhastransmitted“0”.


2Noisehasenteredintopowersupply.

3Noisehasenteredintooutdoorcontrolwire.

1–3Turnthepoweroff,andonagaintocheck.Ifabnormalitygeneratesagain,replaceindoorcontrollerboard.

E8(6840)

Indoor/outdoor unit communication error (Signal receiving error)(Outdoor unit)Abnormalifoutdoorcontrollercircuitboardcouldnotreceiveanythingnormallyfor3minutes.

1Contactfailureofindoor/outdoorunitconnectingwire

2Defectivecommunicationcircuitofoutdoorcontrollercircuitboard

3Defectivecommunicationcircuitofindoorcontrollerboard

4NoisehasenteredintoIndoor/outdoorunitconnectingwire.

1CheckdisconnectionorloosenessofIndoor/outdoorunitconnectingwireofindoororoutdoorunits.

2–4 Turnthepoweroff,andonagaintocheck.Replaceindoorcontrollerboardoroutdoorcontrollercircuitboardifabnormalityisdisplayedagain.

E9(6841)

Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)1Abnormalif“0”receivingisdetected30timescontinuouslythoughoutdoorcon-trollercircuitboardhastransmitted“1”.

2Abnormalifoutdoorcontrollercircuitboardcouldnotfindblankoftransmissionpathfor3minutes.

1Indoor/outdoorunitconnectingwirehascontactfailure.

2Defectivecommunicationcircuitofoutdoorcontrollercircuitboard

3Noisehasenteredpowersupply.4NoisehasenteredIndoor/outdoorunitconnectingwire.

1Checkdisconnectionorloosenessofindoor/outdoorunitconnectingwire.

2–4 Turnthepoweroff,andonagaintocheck.Replaceoutdoorcontrollercir-cuitboardifabnormalityisdisplayedagain.

EF(6607or

6608)

Non defined check codeThiscodeisdisplayedwhennondefinedcheckcodeisreceived.

1Noisehasenteredtransmissionwireofremotecontroller.

2NoisehasenteredIndoor/outdoorunitconnectingwire.

3Outdoorunitisnotaseriesofpower-inverter.

12Turnthepoweroff,andonagaintocheck.Replaceindoorcontrollerboardoroutdoorcontrollercircuitboardifabnormalityisdisplayedagain.

3Replaceoutdoorunitwithpower-invertertypeoutdoorunit.

OCH582B

38


Ed(0403)

Serial communication error1Abnormalifserialcommunicationbetweenoutdoorcontrollercircuitboardandout-doorpowercircuitboardisdefective.

1BreakingofwireorcontactfailureofconnectorCN2betweentheoutdoorcontrollercircuitboardandtheoutdoorpowercircuitboard

2BreakingofwireorcontactfailureofconnectorCN4betweentheoutdoorcontrollercircuitboardandtheoutdoorpowercircuitboard

3Defectivecommunicationcircuitofoutdoorpowercircuitboard

4Defectivecommunicationcircuitofoutdoorcontrollercircuitboardforoutdoorpowercircuitboard

12CheckconnectionofeachconnectorCN2andCN4betweentheoutdoorcontrollercircuitboardandtheoutdoorpowercir-cuitboard.



2AbnormalifcommunicationbetweenoutdoorcontrollercircuitboardandM-NETboardisnotavailable.

1Breakingofwireorcontactfail-ureofconnectorbetweenout-doorcontrollercircuitboardandM-NETboard

2ContactfailureofM-NETboardpowersupplyline

3NoisehasenteredintoM-NETtransmissionwire.

1Checkdisconnection,looseness,orbreakingofconnectionwirebetweenoutdoorcontrol-lercircuitboard(CNMNT)andM-NETboard(CN5).

2Checkdisconnection,looseness,orbreakingofconnectionwirebetweenoutdoorcontrol-lercircuitboard(CNMNT)andM-NETboard(CND).

3CheckM-NETtransmissionwiringmethod.

P8

Pipe temperature<Coolingmode>Detectedasabnormalwhenthepipetemperatureisnotinthecoolingrange3minutesaftercompressorstartand6minutesaftertheliquidorcondenser/evaporatorpipeisoutofcoolingrange.Note1:Ittakesatleast9minutestodetect.Note2:AbnormalityP8isnotdetectedin

dryingmode.Coolingrange: Indoorpipetemperature(TH2or

TH5)−intaketemperature(TH1)[−3:TH:Lowertemperaturebetweenliquidpipe

temperatureandcondenser/evaporatortemperature

<Heatingmode>When10secondshavepassedafterthecompressorstartsoperationandthehotadjustmentmodehasfinished,theunitisdetectedasabnormalwhencondenser/evaporatorpipetemperatureisnotinheatingrangewithin20minutes.Note3:Ittakesatleast27minutestodetect

abnormality.Note4:Itexcludestheperiodofdefrosting

(Detectionrestartswhendefrostingmodeisover)

Heatingrange:3: [(Condenser/Evaporatortemperature(TH5)−intaketemperature(TH1))

1Slighttemperaturedifferencebetweenindoorroomtemperatureandpipe<liquidorcondenser/evaporator>temperaturethermistor•Shortageofrefrigerant•Disconnectedholderofpipe<liquidorcondenser/evaporator>thermistor

•Defectiverefrigerantcircuit2Converseconnectionofextensionpipe(onpluralunitsconnection)

3Conversewiringofindoor/outdoorunitconnectingwire(onpluralunitsconnection)

4Defectivedetectionofindoorroomtemperatureandpipe<condenser/evaporator>temperaturethermistor

5Stopvalveisnotopenedcompletely.

1–4Checkpipe<liquidorcondenser/evaporator>temperaturewithroomtemperaturedisplayonremotecontrollerandoutdoorcontrollercircuitboard.Pipe<liquidorcondenser/evaporator>temperaturedisplayisindicatedbyset-tingSW2ofoutdoorcontrollercircuitboardasfollows.

Conducttemperaturecheckwithoutdoorcontrollercircuitboardafterconnecting‘A-ControlServiceTool(PAC-SK52ST)’.

23Checkconverseconnectionofextensionpipeorconversewiringofindoor/outdoorunitconnectingwire.

PL

Abnormal refrigerant circuitDuringCooling,Dry,orAutoCoolingoperation,thefollowingconditionsareregardedasfailureswhendetectedfor1second.a)Thecompressorcontinuestorunfor30ormoreseconds.

b)Theliquidpipetemperatureorthecondenser/evaporatortemperatureis75°Cormore.

These detected errors will not be cancelled until the power source is reset.

1Abnormaloperationof4-wayvalve2Disconnectionoforleakageinrefrigerantpipes

3Airintorefrigerantpiping4Abnormaloperation(norotation)ofindoorfan

·Defectivefanmotor ·Defectiveindoorcontrolboard 5Defectiverefrigerantcircuit(clogging)

1 When this error occurs, be sure to replace the 4-way valve.

2Checkrefrigerantpipesfordisconnectionorleakage.

3Aftertherecoveryofrefrigerant,vacuumdrythewholerefrigerantcircuit.

4Referto"10-6.HOWTOCHECKTHEPARTS".

5Checkrefrigerantcircuitforoperation. To avoid entry of moisture or air into refrigerant circuit which could cause abnormal high pressure, purge air in refrigerant circuit or replace refrigerant.

( )1 2 3 4 5 6

ON

OFF

1 2 3 4 5 6ON

OFF

1 2 3 4 5 6ON

OFF

1 2 3 4 5 6ON

OFF

A-Control Service Tool SW2 setting

Temperature display of indoor liquid pipeIndoor 1

Temperature display of indoor liquid pipeIndoor 2

Temperature display of indoor condenser/evaporator pipe Indoor 1

Temperature display of indoor condenser/evaporator pipe Indoor 2

OCH582B

39

<M-NET communication error> Note:“Indoorunit”inthetextindicatesM-NETboardinoutdoorunit. Check Code Abnormal points and detection method Case Judgment and action

A0(6600)

Address duplicate definitionThiserrorisdisplayedwhentransmissionfromtheunitsofsameaddressisdetected.Note:Theaddressandattributedisplayed

atremotecontrollerindicatethecontrollerthatdetectedabnormality.

1Thereare2ormoresameaddressofcontrollerofoutdoorunit,indoorunit,FRESHMASTER,orLOSSNAY.

2Noisehasenteredintotransmissionsignalandsignalwastransformed.

Searchtheunitwithsameaddressasabnormalityoccurred.Ifthesameaddressisfound,shutthepowersupplyofoutdoorunitandindoorunitandFRESHMASTERorLOSSNAYatthesametimefor2minutesormoreaftertheaddressiscorrected,andturnthepoweronagain.Checktransmissionwaveformornoiseontransmissionwire.

A2(6602)

Hardware error of transmission processorTransmissionprocessorintendedtotransmit“0”,but“1”appearedontransmissionwire.Note:Theaddressandattributedisplayat

remotecontrollerindicatethecontrollerthatdetectedabnormality.

1 Errorisdetectedifwaveformistransformedwhenwiringworksoftransmissionwireofoutdoorunit,indoorunit,FRESHMASTERorLOSSNAYaredone,orpolarityischangedwiththepoweronandtransmissiondatacollideeachother.

2 Defectivetransmittingreceivingcircuitoftransmissionprocessor

3Transmissiondataischangedbythenoiseontransmission

1Iftheworksoftransmissionwireisdonewiththepoweron,shutoffthepowersupplyofoutdoorunitandindoorunitandFRESHMASTERorLOSSNAYatthesametimefor2minutesormore,andturnthepoweronagain.

2Checktransmissionwaveformornoiseontransmissionwire.

A3(6603)

BUS BUSY1.Overtimeerrorbycollisiondamage Abnormaliftransmittingisnotpossiblefor8to 10minutescontinuouslybecauseofcollisionoftransmission.

2.Datacouldnotreachtransmissionwirefor8to10minutescontinuouslybecauseofnoise,etc.

Note:Theaddressandattributedisplayedatremotecontrollerindicatethecontrollerthatdetectedabnormality.

1Transmissionprocessorcouldnottransmitsignalbecauseshortcyclevoltageofnoiseandthelikehaveenteredintotransmissionwirecontinuously.

2 Transmissionquantityhasincreasedandtransmissionisnotpossiblebecausetherewaswiringmistakeofterminalblockfortransmissionwire(TB3)andterminalblockforcentralcontrol(TB7)inoutdoorunit.

3Transmissionaremixedwithothersandoccupationrateontransmissionwirerosebecauseofdefectiverepeater(afunctiontoconnectorordisconnecttransmissionofcontrolandcentralcontrolsystem)ofoutdoorunit,thenabnormalityisdetected.

1Checkiftransmissionwireofindoorunit,FRESHMASTER,LOSSNAY,orremotecontrollerisnotconnectedtoterminalblockforcentralcontrol(TB7)ofoutdoorunit.

2Checkiftransmissionwireofindoorunit,FRESHMASTERorLOSSNAYisnotconnectedtoterminalblockfortransmissionwireofoutdoorunit.

3Checkifterminalblockfortransmissionwire(TB3)andterminalblockforcentralcontrol(TB7)isnotconnected.


A6(6606)

Communication error with communication processorDefectivecommunicationbetweenunitprocessorandtransmissionprocessorNote:Theaddressandattributedisplayat

remotecontrollerindicatethecontrollerthatdetectedabnormality.

1Dataoftransmissionprocessororunitprocessorisnottransmittednormallybecauseofaccidentaltroublesuchasnoiseorthundersurge.

2Addressforwardingfromunitprocessorisnottransmittednormallybecauseofdefectivetransmissionprocessorhardware.

Turnoffthepowersupplyofoutdoorunit,indoorunitandFRESHMASTERorLOSSNAYatthesametimefor2minutesormore,andturnthepoweronagain.Systemreturnsnormallyifabnormalitywasaccidentalmalfunction.Ifthesameabnormalitygeneratesagain,abnormality-generatedcontrollermaybedefective.

OCH582B

40


A7(6607)

NO ACK signal1.Transmittingsidecontrollerdetectsabnormalifamessagewastransmittedbutthereisnoreply(ACK)thatamessagewasreceived.Transmittingsidedetectsabnormalityevery30seconds,6timescontinuously.

Note:Theaddressandattributedisplayedatremotecontrollerindicatethecontrollerthatdidnotreply(ACK).

Commonfactorthathasnorelationwithabnormalitysource1Theunitofformeraddressdoesnotexistasaddressswitchhaschangedwhiletheunitwasenergized.

2Extinctionoftransmissionwirevoltageandsignaliscausedbyover-rangetransmissionwire.•Maximumdistance.......200m•Remotecontrollerline..(12m)

3Extinctionoftransmissionwirevoltageandsignaliscausedbytype-unmatchedtransmissionwire.Type......Withshieldwire- CVVS, CPEVSWithnormalwire(noshield)- VCTF,VCTFK,CVV CVS,VVR,VVF,VCT

Diameter.....1.25mm2ormore4Extinctionoftransmissionwirevoltageandsignaliscausedbyover-numberedunits.

5Accidentalmalfunctionofabnormality-detectedcontroller(noise,thundersurge)

6Defectiveofabnormality-generatedcontroller

Always try the following when the error “A7” occurs.

1Turnoffthepowersupplyofoutdoorunit,indoorunitandFRESHMASTERorLOSSNAYatthesametimefor2minutesormore,andturnthepoweronagain.Ifmalfunctionwasaccidental,theunitreturnstonormal.

2Checkaddressswitchofabnormality-generatedaddress.

3Checkdisconnectionorloosenessofabnormality-generatedorabnormality-detectedtransmissionwire(terminalblockandconnector)

4Checkiftolerancerangeoftransmissionwireisnotexceeded.

5Checkiftypeoftransmissionwireiscorrectornot.

Ifthecauseoftroubleisin1–5above,repairthedefect,thenturnoffthepowersupplyofoutdoorunit,indoorunitandFRESHMASTERorLOSSNAYatthesametimefor2minutesormore,andturnthepoweronagain.•Ifthecauseoftroubleisnotin1–5aboveinsinglerefrigerantsystem(oneoutdoorunit),controllerofdisplayedaddressorattributeisdefective.

•Ifthecauseoftroubleisnotin1–5aboveindifferentrefrigerantsystem(2ormoreoutdoorunits),judgewith6.

6Ifaddressofabnormalitysourceistheaddressthatshouldnotexist,thereistheunitthatmemorizesnonexistentaddressinformation.Deleteuselessaddressinformationwithmanualsettingfunctionofremotecontroller.

ThisappliesonlytothesystemFRESHMASTERorLOSSNAYisconnectedto,orthesystemthatisequippedwithgroupsettingofdifferentrefrigerantsystem.

Ifthecauseoftroubleisnotanyof1–6 above,replacethecontrollerboardofdisplayedaddressorattribute.Iftheunitdoesnotreturnnormally,multicontrollerboardofoutdoorunitmaybedefective(repeatercircuit).Replacemulticontrollerboardonebyonetocheckiftheunitreturnsnormally.

2.Ifdisplayedaddressorattributeisoutdoorunit,indoorunitdetectsabnormalitywhenindoorunittransmitssignaltooutdoorunitandtherewasnoreply(ACK).

1Contactfailureoftransmissionwireofoutdoorunitorindoorunit

2Disconnectionoftransmissionconnector(CN2M)ofoutdoorunit

3Defectivetransmittingreceivingcircuitofoutdoorunitorindoorunit

3.Ifdisplayedaddressorattributeisindoorunit,remotecontrollerdetectsabnormalitywhenremotecontrollertransmitssignaltoindoorunitandtherewasnoreply(ACK).

1Duringgroupoperationwithindoorunitofmulti-refrigerantsystem,ifremotecontrollertransmitssignaltoindoorunitwhileoutdoorunitpowersupplyofonerefrigerantsystemisturnedofforwithin2minutesofrestart,abnormalityisdetected.

2Contactfailureoftransmissionwireofremotecontrollerorindoorunit

3Disconnectionoftransmissionconnector(CN2M)ofindoorunit

4Defectivetransmittingreceivingcircuitofindoorunitorremotecontroller


OCH582B

41


A7(6607)

4.Ifdisplayedaddressorattributeisremotecontroller,indoorunitdetectsabnormal-itywhenindoorunittransmitssignaltoremotecontrollerandtherewasnoreply(ACK).

1Duringgroupoperationwithindoorunitofmulti-refrigerantsystem,ifindoorunittransmitssignaltoremotecontrollerwhileoutdoorunitpowersupplyofonerefrigerantsystemisturnedofforwithin2minutesofrestart,abnor-malityisdetected.

2Contactfailureoftransmissionwireofremotecontrollerorindoorunit


4Defectivetransmittingreceivingcircuitofindoorunitorremotecontroller

Same as mentioned in “A7” of the previ-ous page.

5.IfdisplayedaddressorattributeisFRESHMASTER,indoorunitdetectsabnormal-itywhenindoorunittransmitssignaltoFRESHMASTERandtherewasnoreply(ACK).

1DuringsequentialoperationofindoorunitandFRESHMASTERofotherrefrigerantsystem,ifindoorunittransmitssignaltoFRESHMASTERwhileout-doorunitpowersupplyofsamerefrigerantsystemwithFRESHMASTERisturnedofforwithin2minutesofrestart,abnormalityisdetected.

2ContactfailureoftransmissionwireofindoorunitorFRESHMASTER

3Disconnectionoftransmissionconnector(CN2M)ofindoorunitorFRESHMASTER

4DefectivetransmittingreceivingcircuitofindoorunitorFRESHMASTER

6.IfdisplayedaddressorattributeisLOSSNAY,indoorunitdetectsabnormal-itywhenindoorunittransmitssignaltoLOSSNAYandtherewasnoreply(ACK).

1IfthepowersupplyofLOSSNAYisoff,indoorunitdetectsabnor-malitywhenittransmitssignaltoLOSSNAY.

2DuringsequentialoperationofindoorunitandLOSSNAYofotherrefrigerantsystem,ifindoorunittransmitssignaltoLOSSNAYwhileoutdoorunitpowersupplyofsamerefrigerantsystemwithLOSSNAYisturnedofforwithin2minutesofrestart,abnormalityisdetected.

3ContactfailureoftransmissionwireofindoorunitofLOSSNAY


5DefectivetransmittingreceivingcircuitofindoorunitorLOSSNAY

7.Ifdisplayedaddressorattributeisnonex-istent.

1Theunitofformeraddressdoesnotexistasaddressswitchhaschangedwhiletheunitwasener-gized.

2AbnormalityisdetectedwhenindoorunittransmitssignalbecausetheaddressofFRESHMASTERandLOSSNAYarechangedaftersequentialopera-tionofFRESHMASTERandLOSSNAYbyremotecontroller.

OCH582B

42

10-5. TROUBLESHOOTING OF PROBLEMS


A8(6608)

M-NET NO RESPONSEAbnormalifamessagewastransmittedandtherewerereply(ACK)thatmessagewasreceived,butresponsecommanddoesnotreturn.Transmittingsidedetectsabnormalityevery30seconds,6timescontinuously.Note:Theaddressandattributedisplayedat

remotecontrollerindicatethecontrol-lerthatdidnotreply(ACK).

1Transmittingconditionisrepeatedfaultbecauseofnoiseandthelike.

2Extinctionoftransmissionwirevoltageandsignaliscausedbyover-rangetransmissionwire.•Maximumdistance......200m•Remotecontrollerline (12m)

3Extinctionoftransmissionwirevoltageandsignaliscausedbytype-unmatchedtransmissionwire.Type.........Withshieldwire- CVVS, CPEVSWithnormalwire(noshield)- VCTF,VCTFK,CVV CVS,VVR,VVF,VCT

Diameter.....1.25mm2ormore

4Accidentalmalfunctionofabnor-mality-generatedcontroller


2TurnoffthepowersupplyofoutdoorunitandindoorunitandFRESHMASTERorLOSSNAYatthesametimefor2minutesormore,andturnthepoweronagain.Ifmalfunctionwasaccidental,theunitreturnstonormal.Ifthesameabnormalitygener-atesagain,controllerofdisplayedaddressandattributemaybedefective.

Phenomena Factor Countermeasure

1.Remotecontrollerdisplaydoesnotwork.

112VDCisnotsuppliedtoremotecontroller.(PowersupplydisplayisnotindicatedonLCD.)

2 12–15VDCissuppliedtoremotecontroller,however,nodisplayisindicated.

• “PLEASEWAIT”isnotdisplayed.• “PLEASEWAIT”isdisplayed.

1CheckLED2onindoorcontrollerboard.(1)WhenLED2islit.

Checktheremotecontrollerwiringforbreakingorcontactfailure.

(2)WhenLED2isblinking.Checkshortcircuitofremotecontrollerwiring.

(3)WhenLED2isnotlit.RefertophenomenaNo.3below.

2Checkthefollowing.• Failureofremotecontrollerif“PLEASEWAIT”isnotdisplayed

• RefertophenomenaNo.2belowif“PLEASEWAIT”isdisplayed.

2.“PLEASEWAIT”displayisremainedontheremotecontroller.

1Atlongest2minutesafterthepowersupply“PLEASEWAIT”isdisplayedtostartup.

2Communicationerrorbetweentheremotecontrollerandindoorunit

3 Communicationerrorbetweentheindoorandoutdoor unit

4Outdoorunitprotectiondeviceconnectorisopen.

1Normaloperation2Self-diagnosisofremotecontroller3“PLEASEWAIT”isdisplayedfor6min-utesatmostincaseofindoor/outdoorunitcommunicationerror.CheckLED3onindoorcontrollerboard.(1)WhenLED3isnotblinking.

Checkindoor/outdoorconnectingwireformiswiring.(ConversewiringofS1andS2,orbreakofS3wiring.)

(2)WhenLED3isblinking.Indoor/outdoorconnectingwireisnormal.

4CheckLEDdisplayonoutdoorcontrollercircuitboard.Referto"10-10.FUNCTIONOFSWITCHES,CONNECTORSANDJUMPERS".Checkprotectiondeviceconnector(63H)forcontactfailure.Referto"10-9.TESTPOINTDIAGRAM".

3.Whenpressingtheremotecontrolleroperationswitch,theOPERATIONdisplayisappearedbutitwillbeturnedoffsoon.

1Aftercancellingtoselectfunctionfromtheremotecontroller,theremotecontrolleroperationswitchwillbenotacceptedforapprox.30seconds.

1Normaloperation

OCH582B

43

Phenomena Factor Countermeasure

4.Evencontrollingbythewirelessremotecontroller,nobeepisheardandtheunitdoesnotstartoperating.Operationdisplayisindicatedonwirelessremotecontroller.

1Thepairnumbersettingsofthewirelessremotecontrollerandindoorcontrollerboardaremismatched.

1Checkthepairnumbersettings.

5.Whenoperatingbythewirelessremotecontroller,beepsoundisheard,however,unitdoesnotstartoperating.

1Nooperationfor2minutesatmostafterthepowersupplyON.

2Localremotecontrolleroperationisprohibited.•RemotecontrollingadaptorisconnectedtoCN32ontheindoorcontrollerboard.

•Localremotecontrolleroperationisprohibitedbycentralizedcontroller,etc.sinceitisconnectedtoMELANS.

3PhenomenaofNo.2.

1Normaloperation

2Normaloperation

3CheckthephenomenaNo.2.

6.Remotecontrollerdisplayworksnormallyandtheunitperformscoolingoperation,however,thecapacitycannotbefullyobtained.(Theairdoesnotcoolwell.)

1Refrigerantshortage2Filterclogging3Heatexchangerclogging4Airductshortcycle

1 • Ifrefrigerantleaks,dischargingtemperaturerisesandLEVopeningincreases.Inspectleakagebycheckingthetemperatureandopening.

• Checkpipeconnectionsforgasleakage.2Openintakegrilleandcheckthefilter.

Cleanthefilterbyremovingdirtordustonit.3 • Ifthefilterisclogged,indoorpipe

temperaturerisesanddischargingpressureincreases.Checkifheatexchangeriscloggedbyinspectingdischargingpressure.

• Cleantheheatexchanger.4Removetheblockage.

7.Remotecontrollerdisplayworksnormallyandtheunitperformsheatingoperation,however,thecapacitycannotbefullyobtained.

1LinearexpansionvalvefaultOpeningcannotbeadjustedwellduetolinearexpansionvalvefault.

2Refrigerantshortage3Lackofinsulationforrefrigerantpiping4Filterclogging5Heatexchangerclogging6Airductshortcycle7Bypasscircuitofoutdoorunitfault

1 • Dischargingtemperatureandindoorheatexchangertemperaturedoesnotrise.Inspectthefailurebycheckingdischargingpressure.

• Replacelinearexpansionvalve.2 • Ifrefrigerantleaks,discharging

temperaturerisesandLEVopeningincreases.Inspectleakagebycheckingthetemperatureandopening.

• Checkpipeconnectionsforgasleakage.3Checktheinsulation.4Openintakegrilleandcheckthefilter.

Cleanthefilterbyremovingdirtordustonit.

5 • Ifthefilterisclogged,indoorpipetemperaturerisesanddischargingpressureincreases.Checkifheatexchangeriscloggedbyinspectingdischargingpressure.

• Cleantheheatexchanger.6Removetheblockage.7 Checkrefrigerantsystemduringoperation.

8.1For3minutesaftertemperatureadjusterturnsoff,thecompressorwillnotstartoperatingeveniftemperatureadjusteristurnedon.

2For3minutesaftertemperatureadjusterturnson,thecompressorwillnotstopoperatingeveniftemperatureadjusteristurnedoff.(Compressorstopsoperatingimmediatelywhenturningoffbytheremotecontroller.)

12Normaloperation(Forprotectionofcompressor)

12Normaloperation

OCH582B

44

How long is “PLEASE WAIT” kept being displayed on the

remote controller?

6 minutes or more

2 minutes or less

2 to 6 minutes

NO

NO

YES

YES

Are any check codes displayed on the remote controller?

Are any check codes displayed on the LED?

Symptoms: “PLEASE WAIT” is kept being displayed on the remote controller.

Check the display time of “PLEASE WAIT” after turning on the main power.

• “PLEASE WAIT” will be displayed during the start-up diagnosis after turning on the main power.

• Normal The start-up diagnosis will be over in around 2 minutes.

• Miswiring of indoor/ outdoor connecting wire• Breaking of indoor/ outdoor connecting wire (S3)• Defective indoor controller board• Defective outdoor controller circuit board

• Refer to “Self-diagnosis action table” in order to solve the trouble.

• In case of communication errors, the display of remote controller may not match the LED display of the outdoor unit.

• Defective indoor controller board• Defective remote controller

Check the LED display of the outdoor controller circuit board.

Diagnosis flow Cause Inspection method and troubleshooting

OCH582B

45

198 to 264 V AC?

198 to 264 V AC?

198 to 264 V AC?

12 to 16 V DC?

12 to 16 V DC?

NO

YES

NO

YES

NO

YES

YES

NO

YES

NO

Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit which is used to connect the indoor unit and the outdoor unit.

Check the voltage among L(L3) and N on the terminal block (TB1) of the outdoor power circuit board.

Check the voltage of indoor controller board (CN2D).

Check the voltage of the unit after removing the indoor power board (CN2S).

Check the voltage between S1 and S2 on the terminal block (TB1) of the outdoor unit which is used to connect the indoor unit and the outdoor unit.

• Troubles concerning power supply.

• Check the power wiring to the outdoor unit.• Check the breaker.

• Bad wiring of the outdoor controller board.• The fuses on the outdoor controller circuit board are blown.

• Check the wiring of the outdoor unit.• Check if the wiring is bad. Check if the fuses are blown. The fuses on the outdoor controller circuit board will be blown when the indoor /outdoor connecting wire short-circuits.

• Bad wiring of the outdoor controller board.• The fuses on the outdoor controller circuit board are blown.

• Check if miswiring, breaking or poor contact is causing this problem. Indoor/outdoor connecting wire is polarized 3-core type. Connect the indoor unit and the outdoor unit by wiring each pair of S1, S2 and S3 on the both side of indoor/outdoor terminal blocks.

• Defective indoor power board

• Replace the indoor power board.

• Defective indoor controller board

• Replace the indoor controller board.

• Miswiring, breaking or poor connection of indoor/outdoor connecting wire

• Check if there is miswiring or breaking of wire.

Symptoms: Nothing is displayed on the remote controller. 1


LED display of the indoor controller boardLED1 :LED2 : LED3 :

OCH582B

46

198 to 264 V AC?

Are there looseness or disconnection of the indoor/outdoor connecting wire?

Is anything displayed?

17 to 28 V DC?

Is “E8” displayed?

Can all the indoor unit be operated?

Check the voltage between S2 and S3 on the terminal block of the outdoor unit.

NO

YES

Not lighting.

Blinking.

NO

YES

NO

YES

Not displayed.

Displayed.

YES

NO

YES

NO

Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit which is used to connect the indoor unit and the outdoor unit.

Check the refrigerant address of the outdoor unit. (SW1-3 to 1-6)

Check the looseness or disconnection of the indoor/outdoor connecting wire.

Check the LED display of the outdoor unit after turning on the main power again.

Can the unit be restarted?

• Breaking or poor contact of the indoor/outdoor connecting wire

• Fix the breaking or poor contact of the indoor/outdoor connecting wire.

• Defective outdoor controller circuit board

• Replace the outdoor controller circuit board.

• Normal Only the unit which has the refrigerant address “0” supplies power to the remote controller.

• Set the refrigerant address to “0”. In case of the multiple grouping system, recheck the refrigerant address again.

• Defective indoor power board

• Replace the indoor power board.

• Defective outdoor power circuit board

• Replace the outdoor power circuit board.


• Replace the indoor controller board of the indoor unit which does not operate.

• Defective outdoor controller circuit board

• Replace the outdoor controller circuit board.

• Influence of electromagnetic noise

• Not abnormal There may be the influence of electromagnetic noise. Check the transmission wire and get rid of the causes.


Diagnosis flow CauseInspection method and troubleshooting

LED display of the indoor controller boardLED1 :LED2 : LED3 : or

Check the status of the indoor controller board LED3 display.

Is the refrigerant address “0”?

NO

YES

NO

YES

Is “EA” or “Eb” displayed?

OCH582B

47



LED display of the indoor controller boardLED1 :LED2 : or LED3 : —

10 to 16 V DC?YES

NO

Lighting

Blinking

Lighting

Blinking

Check the voltage of the terminal block (TB6) of the remote controller.

Check the status of the LED2 after disconnecting the remote controller wire from the terminal block (TB5) of the indoor unit.

• Defective remote controller

• Replace the remote controller.

• Breaking or poor contact of the remote controller wire

• Check if there is breaking or poor contact of the remote controller wire. Check the voltage of the terminal block (TB5) connecting the remote controller wire. If it is not between 10 and 16 V DC, the indoor controller board must be defective.

• The remote controller wire short-circuits

• Check if the remote controller wire is short-circuited.


• Replace the indoor controller board.

Check the status of the LED2.

Check the status of the LED2.

OCH582B

48

1 The operating display of remote controller does not come on.

Phone Calls From Customers How to Respond Note1 Check if power is supplied to air conditioner. Nothing appears on the display unless power is supplied.

2 Unit cannot be restarted for a while after it’s stopped.

2 Wait around 3 minutes to restart unit. The air conditioner is in a state of being protected by the microcomputer’s directive. Once the compressor is stopped, the unit cannot be restarted for 3 minutes. This control is also applied when the unit is turned on and off by remote controller.

3 Check code appears and blinkson the display of remotecontroller.

Refer to “SELF-DIAGNOSIS ACTION TABLE”. Check if servicing is required for the error.

Display time of “FILTER” depends on the model. Long life filter: 2500 hrs.Standard filter: 100 hrs.

3 Check code will be displayed if any protection devices of the air conditioner are actuated. What is check code?

1 “PLEASE WAIT” is displayed on the screen.

1 Wait around 2 minutes. An automatic startup test will be conducted for 2 minutes when power is supplied to the air conditioner. “PLEASE WAIT” will be kept displayed while that time.

2 “FILTER” is displayed on the screen.

2 This indicates that it is time to clean the air filters. Clean the air filters. Press the FILTER button on the remote controller twice to clear “FILTER” from the display. See the operation manual that came with the product for how to clean the filters.

3 “STANDBY” is displayed on the screen.

3 This is displayed when the unit starts HEAT operation, when the thermostat puts the compressor in operation mode, or when the outdoor unit ends DEFROST operation and returns to HEAT operation. The display will automatically disappear around 10 minutes later. While “STANDBY” is displayed on the remote controller, the airflow amount will be restricted because the indoor unit’s heat exchanger is not fully heated up. In addition to that, the up/down vane will be automatically set to horizontal blow in order to prevent cold air from directly blowing out to human body. The up/down vane will return to the setting specified by the remote controller when “STANDBY” is released.

4 “DEFROST” is displayed on the screen. (No air comes out of the unit.)

4 The outdoor unit gets frosted when the outside temperature is low and the humidity is high. “DEFROST” indicates the DEFROST operation is being performed to melt this frost. The DEFROST operation ends in around 10 minutes (at most 15 minutes). During the DEFROST operation, the indoor unit’s heat exchanger becomes cold, so the fan is stopped. The up/down vane will be automatically set to horizontal blow in order to prevent cold air from directly blowing out to human body. The display will turn into “STANDBY” when DEFROST operation ends.

Unit does not operate at all.

Remote controller

• Before repair Frequent calling from customers

OCH582B

49

Phone Calls From Customers How to Respond Note1 Check the set temperature of remote controller. The outdoor unit cannot be operated if the set temperature is not appropriate. The outdoor unit operates in the following modes.

COOL: When the set temperature is lower than the room temperature. HEAT: When the set temperature is higher than the room temperature.

2 Check if filters are not dirty and clogged. If filters are clogged, the airflow amount will be reduced and the unit capacity will be lowered. See the instruction manual that came with the product for how to clean the filters.3 Check there is enough space around the air conditioner. If there are any obstacles in the air intake or air outlet of indoor/outdoor units, they block the airflow direction so that the unit capacity will be lowered.

1 A gas escaping sound is heard sometimes.

1 This is not a malfunction. This is the sound which is heard when the flow of refrigerant in the air conditioner is switched.

2 A cracking sound is heard sometimes.

2 This is not a malfunction. This is the sound which is heard when internal parts of units expand or contract when the temperature changes.

3 A buzzing sound is heard sometimes.

3 This is not a malfunction. This is the sound which is heard when the outdoor unit starts operating.

4 A ticking sound is heard from the outdoor unit sometimes.

4 This is not a malfunction. This is the sound which is heard when the fan of the outdoor unit is controlling the airflow amount in order to keep the optimum operating condition.

5 A sound, similar to water flowing, is heard from the unit.

5 This is not a malfunction. This is the sound which is heard when the refrigerant is flowing inside the indoor unit.

2 The fan speed does not match the setting of the remote controller in HEAT operation.

The up/down vane will be automatically set to horizontal blow in these cases listed up on the left (1–3). After a while, the up/down vane will be automatically moved according to the setting of the remote controller.

2 This is not a malfunction. 1) When the HEAT operation starts, to prevent the unit from blowing cold air, the fan speed is gradually increased from zero to the set speed, in proportion to the temperature rise of the discharged air. 2) When the room temperature reaches the set temperature and the outdoor unit stops, the unit starts the LOW AIR operation. 3) During the HEAT operation, the DEFROST operation is performed to defrost the outdoor unit. During the DEFROST operation, the blower is stopped to prevent cold air coming out of the indoor unit.

Sound comes out from the air conditioner.

1 The fan speed does not match the setting of the remote controller during DRY operation.(No air comes out sometimes during DRY operation.)

1 This is not a malfunction. During the DRY operation, the blower’s ON/OFF is controlled by the microcomputer to prevent overcooling and to ensure efficient dehumidification. The fan speed cannot be set by the remote controller during DRY operation.

Something is wrong with the blower…..

The room cannot be cooled or heated sufficiently.

OCH582B

50

3 Air blows out for a while after HEAT operation is stopped.

Phone Calls From Customers How to Respond Note

3 This is not a malfunction. The blower is operating just for cooling down the heated-up air conditioner. This will be done within 1 minute. This control is conducted only when the HEAT operation is stopped with the electric heater ON.

However, this control is also applied to the models which has no electric heater.

“STANDBY” will be displayed on the remote controller in case of 1 and 2. “DEFROSTING” will be displayed on the screen in case of 3.

1 The airflow direction is changed during COOL operation.

1 If the up/down vane is set to downward in COOL operation, it will be automatically set to horizontal blow by the microcomputer in order to prevent water from dropping down. “1 Hr.” will be displayed on the remote controller if the up/down vane is set to downward with the fan speed set to be less than “LOW”.

2 The airflow direction is changed during HEAT operation. (The airflow direction cannot be set by remote controller.)

2 In HEAT operation, the up/down vane is automatically controlled according to the temperature of the indoor unit’s heat exchanger. In the following cases written below, the up/down vane will be set to horizontal blow, and the setting cannot be changed by remote controller. 1) At the beginning of the HEAT operation 2) While the outdoor unit is being stopped by thermostat or when the outdoor unit gets started to operate. 3) During DEFROST operation The airflow direction will be back to the setting of remote controller when the above situations are released.

3 The airflow direction does not change. (Up/down vane, left/right louver)

3 1) Check if the vane is set to a fixed position. (Check if the vane motor connector is removed.) 2) Check if the air conditioner has a function for switching the air direction. 3) If the air conditioner does not have that function, “NOT AVAILABLE” will be displayed on the remote controller when “AIR DIRECTION” or “LOUVER” button is pressed.

Something is wrong with the blower…..

Something is wrong with the airflow direction….

1 Check if you set ON/OFF timer. The air conditioner starts operating at the time designated if ON timer has been set before.

2 Check if any operations are ordered by distant control system or the central remote controller. While “CENTRALLY CONTROLLED INDICATOR” is displayed on the remote controller, the air conditioner is under the control of external directive.

The air conditioner starts operating even though any buttons on the remote controller are not pressed.

1 Check if you set ON/OFF timer. The air conditioner stops operating at the time designated if OFF timer has been set before.

The air conditioner stops even though any buttons on the remote controller are not pressed.

There might be a case that “CENTRALLY CONTROLLED INDICATOR” will not be displayed.

There might be a case that “CENTRALLY CONTROLLED INDICATOR” will not be displayed.

3 Check if power is recovered from power failure (black out). The units will automatically start operating when power is recovered after power failure (black out) occurs. This function is called “auto recovery feature from power ”.

2 Check if any operations are ordered by distant control system or the central remote controller. While “CENTRALLY CONTROLLED INDICATOR” is displayed on the remote controller, the air conditioner is under the control of external directive.

OCH582B

51

Phone Calls From Customers How to Respond Note

This is not a malfunction.This may occur when the operation gets started in the room of high humidity.

A white mist is expelled from the indoor unit.

COOL: when pipes or piping joints are cooled, they get sweated and water drips down.HEAT: water drips down from the heat exchanger.Note: Make use of optional parts “Drain Socket” and

“Drain pan” if these water needs to be collected and drained out for once.

Water or moisture is expelled from the outdoor unit.

Batteries are being exhausted. Replace them and press the reset button of remote controller.

The display of wireless remote controller gets dim or does not come on.The indoor unit does not receive a signal from remote controller at a long distance.

OCH582B

52

12345

MGray

Orange

Red

Yellow

Black

Parts name Check points

Disconnect the connector then measure the resistance with a tester. (At the ambient temperature 10 to 30°C)

Thermistor (TH3)<Liquid>Thermistor (TH6)<2-phase pipe>Thermistor (TH7)<Ambient> Thermistor (TH8)<Heat sink>Thermistor (TH32)<Comp. Surface>

Normal160 to 410 k"

4.3 to 9.6 k"

39 to 105 k"

TH32TH3TH6TH7TH8

Abnormal

Open or short

Measure the resistance between the terminals with a tester. (At the ambient temperature 20°C)

Solenoid valve coil<4-way valve> (21S4)

Motor for compressor(MC)

Linear expansion valve(LEV-A)

Normal Abnormal

Open or short

Abnormal

Open or shortRefer to “5-3. COMPRESSOR TECHNICAL DATA”.

Disconnect the connector then measure the resistance with a tester. (Winding temperature 20°C)

Normal

Gray - Black Gray - Red Gray - Yellow Gray - Orange

Abnormal

46 ± 3 "Open or short

Refer to the next page.Fan motor(MF1,MF2)

Measure the resistance between the terminals with a tester. (Winding temperature 20°C)

Normal

W

V

U

P200/250

1215 ± 122 "

10-6. HOW TO CHECK THE PARTSPUHZ-P200YKA.UK PUHZ-P250YKA.UKPUHZ-P200YKAR1.UK PUHZ-P250YKAR1.UK

OCH582B

53

Notes · High voltage is applied to the connecter (CNF1, 2) for the fan motor. Pay attention to the service. · Do not pull out the connector (CNF1, 2) for the motor with the power supply on. (It causes trouble of the outdoor controller circuit board and fan motor.)Self checkSymptom : The outdoor fan cannot rotate.

1

2

Check method of DC fan motor (fan motor/outdoor controller circuit board)

Fail

Fail

Wiring contact checkContact of fan motor connector (CNF1, 2)

Fuse checkCheck the fuse (F5) on outdoorcontroller circuit board.

Power supply check (Remove the connector (CNF1, 2))Measure the voltage in the outdoor controller circuit board.TEST POINT 1 : VDC (between 1 (+) and 4 (−) of the fan connector): VDC 250–330 V DCTEST POINT 2 : VCC (between 5 (+) and 4 (−) of the fan connector): VCC 15 V DC

Recover wiring.

Replace the outdoor controller circuit board.

Replace the fan motor.

Replace the outdoor controller circuit board (C.B) and fan motor (MF1, 2).

Replace the outdoor controller circuit board.

Replace the fan motor.

Is the voltage normal?

Is there contact failure?

Yes

No

Did the fuse blow?

No

Yes

Check the operation of fan. END

Yes OK

Check the operation. END

OK

Yes

No

OCH582B

54

10-7. HOW TO CHECK THE COMPONENTS<Thermistor feature chart>Low temperature thermistors

•Thermistor<Liquid>(TH3)•Thermistor<2-phasepipe>(TH6)•Thermistor<Ambient>(TH7)

0: 15k"10: 9.6k"20: 6.3k"25: 5.2k"

0: 180k"25: 50k"50: 17k"70: 8k"90: 4k"

30: 4.3k"40: 3.0k"

ThermistorR0=15k"±3%Bconstant=3480±2%

Rt=15exp{3480(273+t– 273)}

1 1

ThermistorR50=17k"±2%Bconstant=4150±3%

Rt=17exp{4150(273+t–323)}1 1

ThermistorR120=7.465k"±2%Bconstant=4057±2%

Rt=7.465exp{4057(273+t–393)}1 1

Medium temperature thermistor

•Thermistor<HeatSink>(TH8)

20: 250k"30: 160k"40: 104k"50: 70k"60: 48k"

70: 34k"80: 24k"90: 17.5k"100: 13.0k"110: 9.8k"

High temperature thermistor

•Thermistor<Comp.Surface>(TH32)

0

10

20

30

40

50

−20 −10 0 10 20 30 40 50Temperature (:)

Res

ista

nce

(k"

)

200

150

100

50

025 50 75 100 125

Temperature (:)

Res

ista

nce

(k"

)

500

400

300

200

100

025 50 75 100 120

Temperature (:)

Res

ista

nce

(k"

)

OCH582B

55

<Output pulse signal and the valve operation>

(2) Linear expansion valve operation

A

B

C

Open

Extra tightening (about 32 pulse)

Pulse number

500 pulseOpening a valveall the way

CloseValv

e po

sitio

n (c

apac

ity)

Openingavalve:8→7→6→5→4→3→2→1→8Closingavalve:1→2→3→4→5→6→7→8→1Theoutputpulseshiftsinaboveorder.

·Whenlinearexpansionvalveoperationstops,alloutputphasesbecomeOFF.

·Whenthepoweristurnedon,700pulseclosingvalvesignalwillbesenttillitgoestoApointinordertodefinethevalveposition.

(Thepulsesignalisbeingsentforabout20seconds.)

Whenthevalvemovessmoothly,thereisnosoundorvibrationoccurringfromthelinearexpansionvalve:however,whenthepulsenumbermovesfromB to Aorwhenthevalveislocked,moresoundcanbeheard.

NosoundisheardwhenthepulsenumbermovesfromB to Aincasecoilisburntoutormotorislockedbyopen-phase.

·Soundcanbedetectedbyplacingtheearagainstthescrewdriv-erhandlewhileputtingthescrewdrivertothelinearexpansionvalve.

LEV

M

16

[4 [4

[3

[2

[1

1Gray

Orange

Red

Yellow

Black

2

3

4

5

Connector LEV-ALEV-BLEV-C

12 V DC

Outdoor controller board

Drive circuit

[3

[2

[1

3

2

54

Linearexpansionvalve(1) Operation summary of the linear expansion valve•Linearexpansionvalveopens/closesthroughsteppingmotorafterreceivingthepulsesignalfromtheoutdoorcontrollercir-cuitboard.•Valvepositioncanbechangedinproportiontothenumberofpulsesignal.<Connectionbetweentheoutdoorcontrollerboardandthelinearexpansionvalve>

1

ON

OFF

OFF

OFF

ON

ON

OFF

OFF

OFF

ON

OFF

OFF

OFF

ON

ON

OFF

[1

Output(Phase)

Output

[2

[3

[4

2 3 4 5 6 7 8

OFF

OFF

ON

OFF

OFF

OFF

ON

ON

OFF

OFF

OFF

ON

ON

OFF

OFF

ON

OCH582B

56

Main body

Lead wire

StopperCoil

Be sure to attach the stopper.

A

(3) How to attach and detach the coil of linear expansion valve<Composition>Linearexpansionvalveisseparableintothemainbodyandthecoilasshowninthediagrambelow.

<How to detach the coil> Holdthelowerpartofthemainbody(shownasA)firmlysothatthemainbodydoesnotmoveanddetachthecoilbypullingitupward.Besuretodetachthecoilholdingmainbodyfirmly.Otherwisepipescanbendduetopressure.

<How to attach the coil> Holdthelowerpartofthemainbody(shownasA)firmlysothatthemainbodydoesnotmoveandattachthecoilbyinsertingitdownwardintothemainbody.Thensecurelyattachthecoilstop-pertomainbody.(Atthistime,becarefulthatstressisnotaddedtoleadwireandmainbodyisnotwoundbyleadwire.)Ifthestopperisnotfirmlyattachedtomainbody,coilmaybedetachedfromthemainbodyandthatcancausedefectiveoperationoflin-earexpansionvalve.Topreventpipingstress,besuretoattachthecoilholdingthemainbodyoflinearexpansionvalvefirmly.Otherwisepipemaybreak.

A

OCH582B

57

(4) Releasing emergency operation 1Turnthemainpowersupplyoff.2Settheemergencyoperationswitch(SWE)onindoorcontrollerboardtoOFF.3Settheshortingpinsofemergencyoperationconnector(CN31)onoutdoorcontroller

boardtoOFF.4SetSW4-2onoutdoorcontrollerboardasshownintheright.

Note:Ifshortingpinsarenotsetonemergencyoperationconnector(CN31),thesettingremainsOFF.

SW4

1 2 Cooling

HeatingON

10-8. EMERGENCY OPERATION (1)Whenanycheckcodesshownbelowisdisplayedonoutdoorunit,ormicrocomputerforwiredremotecontrollerorindoor unithasafailurewhilenootherproblemsarefound,emergencyoperationwillbeavailablebysettingtheemergencyopera-

tionswitch(SWE)ONandshort-circuitingtheconnector(CN31)onoutdoorcontrollerboard.

(2) Check the following items and cautions for emergency operation 1Makesurethatthereisnoabnormalityinoutdoorunitotherthantheaboveabnormalities.(Emergencyoperationwillnot

beavailablewhencheckcodeotherthantheaboveareindicated.)2Foremergencyoperation,itisnecessarytosettheemergencyoperationswitch(SWE)onindoorcontrollerboard.Refer

totheelectricalwiringdiagramofindoorunitforhowtosettheindoorunit.3Duringemergencyoperation,theair-conditionerwillcontinuouslybeoperatedbysupplyingpowerandstoppingit:Itcan

notbeturnedonoroffbyremotecontrol,andtemperaturecontrolisnotpossible.4Donotperformemergencyheatingoperationforanextendedperiodoftime:Iftheoutdoorunitstartsdefrostingduring

thisperiod,coldairwillblowoutfromtheindoorunit.5Donotperformemergencycoolingoperationformorethan10hours:Neglectingthiscouldresultinfreezingtheheat

exchangerinindoorunit.

(3) Emergency operation procedure 1Turnthemainpowersupplyoff.2Turnontheemergencyoperationswitch(SWE)onindoorcontrollerboard.3Settheshortingpinsofemergencyoperationconnector(CN31)onoutdoorcontrollerboardtoON.4UseSW4-2onoutdoorcontrollerboardtosettheoperationmode(coolingorheating).(SW4-1isnotused.)

5Turningthemainpowersupplyonwillstarttheemergencyoperation.

SW4

1 2 Cooling

HeatingON ON

OFF

CN31 Shorting pins

Inspected contentOpen/short of outdoor unit thermistor (TH3/TH6/TH7/TH8)Indoor/outdoor unit communication error • Signal receiving error (Outdoor unit)Indoor/outdoor unit communication error • Transmitting error (Indoor unit)Communication error other than outdoor unitCommunication error between outdoor controller board and M-NET board (Serial communication error)

Check codeU4E8E9

E0–E7Ed

●When following abnormalities occur, emergency operation will be available.

OCH582B

58

(5) Operation data during emergency operationDuringemergencyoperation,nocommunicationisperformedwiththeindoorunit,sothedataitemsneededforoperationaresettothefollowingvalues:

Operation data

Intake temperature (TH1)

Indoor pipe temperature (TH2)

Indoor 2-phase pipe temperature (TH5)

Set temperature

Outdoor liquid pipe temperature (TH3)

Outdoor comp. surface temperature (TH32)

Outdoor 2-phase pipe temperature (TH6)

Outdoor ambient temperature (TH7)

Temperature difference code(room temperature - set temperature) (∆Tj)Discharge superheat (SHd)

Sub-cool (SC)

Operation mode

COOL

27:

5:

5:

25:

45:

80:

50:

35:

5

30:

5:

HEAT

20.5:

45:

50:

22:

5:

80:

5:

7:

5

30:

5:

(*1)

(*1)

(*1)

(*1)

(*2)

(*2)

Remarks

*1. If the thermistor temperature data is normal (not open/short), that data is loaded into the control as valid data. When the unit enters emergency operation and TH values are mismatched, set the thermistors to open/short. And the unit runs emergency operation with the values listed above.*2. If one thermistor is set to open/short, the values for SHd/SC will be different from the list above. [Example] When liquid temperature thermistor (TH3) has an open or short circuit.

COOL

45:

Ta

Tc

5:

5:

HEAT

5:

Tb

Td

50:

45:

Thermistor

TH3

TH6

TH32

TH5

TH2

Regard normal figure as effective data.

Regard normal figure as effective data.

Discharge superheat (SHd) Cooling = TH32−TH6 = Tc−Ta Heating = TH32−TH5 = Td−50

Degree of subcooling (SC) Cooling = TH6−TH3 = Ta−45 Heating = TH5−TH2 = 50−45 = 5:

—

—

—

—

—

OCH582B

CNSS1–S2:230VAC

CNAC2 to 4: Powersupplyforout-

doorcontrollercircuitboard(230VAC)

1 to 3: Powersupplyforindoorandoutdoorunitconnectionwire(230VAC)

CN4Transmissiontoout-doorpowercircuitboard(CN4)

CN51Externalsignaloutput•Compressoroperatingsignal•Abnormalsignal

CN2Connecttotheoutdoorpowercircuitboard(CN2)1–5:Receptionfrom

powercircuitboard2–5:Zerocrosssignal

(0–5VDC)3,4:Notused6–5:16VDC7–5:16VDC

SW1Forceddefrost,detecthistoryrecordreset,refrigerantaddress

CNDM1–2:Inputoflow-levelsoundprioritymode1–3:Inputofexternalcontactpoint

SW7Demandcontrolsetting

63HHighpressureswitch

SW4Testoperation

SW6Modelselect

SW5Functionswitch

TH3Thermistor<Liquid>

TH7/6Thermistor<Ambient/2-phasepipe>

VFG

(VoltagebetweenrightpinsofPC5CandPC5D,pin3andpin4)(Sameas(CNF17(+)–4(−))

VSP(VoltagebetweenpinsofC5A,C5B):0VDC(whenstopped),1–6.5VDC(whenoperated)

LEV-ALinearexpansionvalve

SWPPumpdown

SW8PipereplaceWiringreplace

CNMConnecttoAcontrolservicetool

CNMNTConnecttoM-NETadapter(CN5)

CNVMNTConnecttoM-NETadapter(CND)

TH32Thermistor<Comp.Surface>

CommunicationpowersupplyD71Voltage24VDC

CNF1,CNF2Connecttothefanmotor1–4:250–330VDC5–4:15VDC6–4:0–6.5VDC7–4:15VDC(Whenstopped) 7.5VDC(Whenoperated) (0–15Vpulse)

CNDC250–330V DC(1+, 3−)(Noisefiltercircuitboard)

+−

21S44-wayvalve

59

<CAUTION>TESTPOINT1ishighvoltage.10-9. TEST POINT DIAGRAMOutdoor controller circuit boardPUHZ-P200YKA.UK PUHZ-P250YKA.UKPUHZ-P200YKAR1.UK PUHZ-P250YKAR1.UK

OCH582B

LI1,LI2,LI3,NIPOWER SUPPLYLI1-LI2/LI-LI3/LI3-LI1:400VACinputLI1-NI/LI2-NI/LI3-NI:230VACinput(Connecttotheterminalblock(TB1))

GD1Connecttotheearth

CNAC1,CNAC2230VAC(Connecttotheoutdoorcontrollercircuitboard(CNAC))

CNDC(Connecttotheoutdoorcontrollercircuitboard(CNDC))

LO1,LO2,LO3POWER SUPPLYLO1-LO2/LO2-LO3/LO3-LO1:400VACOUTPUT(Connecttotheoutdoorpowercircuitboard(TB-L1,L2,L3))

CNCTPrimarycurrent(Connecttotheoutdoorpowercircuitboard(CN5))

CNLConnecttotheACL4

60

Outdoor noise filter circuit boardPUHZ-P200YKA.UK PUHZ-P250YKA.UKPUHZ-P200YKAR1.UK PUHZ-P250YKAR1.UK

GD2Connecttotheearth

OCH582B

61

Outdoor power circuit boardPUHZ-P200YKA.UKPUHZ-P250YKAR1.UKPUHZ-P200YKA.UKPUHZ-P250YKAR1.UK

Brief Check of POWER MODULEUsually,theyareinastateofbeingshort-circuitediftheyarebroken.Measuretheresistanceinthefollowingpoints(connectors,etc.).Iftheyareshort-circuited,itmeansthattheyarebroken.1.CheckofDIODE MODULEL1-P1,L2-P1,L3-P1,L1-N1,L2-N1,L3-N12.CheckofDIP-IPMP2-U,P2-V,P2-W,N2-U,N2-V,N2-W

Note:ThemarksL1,L2,L3,N1,N2,P1,P2,U,VandWshowninthediagramarenotactuallyprintedontheboard.

CN5Detectionofprimarycurrent(Connecttotheoutdoornoisefiltercircuitboard(CNCT))

CN4Connecttotheoutdoorcontrollercircuitboard(CN4)

CN2Connecttotheoutdoorcontrollercircuitboard(CN2)1–5:Powercircuitboard→Transmittingsignaltothecontrollerboard(0–5VDC)2–5:Zerocrosssignal(0–5VDC)3–4:Notused6–5:16VDC7–5:16VDC

TB-U, TB-V, TB-WConnecttothecompressor(MC)Voltageamongphases:10–400VAC

Diodemodule

U P2VWN2

L3 N1L1P1 L2

DIP-IPM

TABconnectoronX52CAConnecttotheRSresistor

CN6Thermistor<Heatsink>(TH8)

TB-L1,TB-L2,TB-L3Connecttotheoutdoornoisefiltercircuitboard(LO1,LO2,LO3)400VAC

L3OUT-L3INLeadconnect

TB-P3ConnecttotheDCL

TB-P1ConnecttotheDCL

5:– 1, 2, 6, 7 : +

OCH582B

62

SwitchType

ofswitch

Dipswitch

Pushswitch

SW1

1

2

No. Function Effective timingAction by the switch operation

Forced defrost *1 Start Normal When compressor is working in heating operation. *1

Abnormal history clear

Refrigerant address setting When power supply ON

Clear Normal off or operating

SWP

6

5

4

3

Under suspensionPump down Start Normal

SW412

Test run Operating OFFUnder suspension

Test run mode setting Heating Cooling

ON OFF

1 2 30 1 2 3

4 5 6

ON

1 2 3 4 5 6

ON

1 2 3 4 5 6

ON

1 2 3 4 5 6

ON

1 2 34 5 6 7

4 5 6

ON

1 2 3 4 5 6

ON

1 2 3 4 5 6

ON

1 2 3 4 5 6

ON

1 2 38 9 10 11

4 5 6

ON

1 2 3 4 5 6

ON

1 2 3 4 5 6

ON

1 2 3 4 5 6

ON

1 2 312 13 14 15

4 5 6

ON

1 2 3 4 5 6

ON

1 2 3 4 5 6

ON

1 2 3 4 5 6

ON

10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS (1) Function of switches

*1Forceddefrostshouldbedoneasfollows.1ChangetheDIPSW1-1ontheoutdoorcontrollerboardfromOFFtoON.2Forceddefrostwillstartbytheaboveoperation1ifalltheseconditionswrittenbelowaresatisfied.•Heatmodesetting•10minuteshavepassedsincecompressorstartedoperatingorpreviouscompulsorydefrostingfinished.•Pipetemperatureislessthanorequalto8°C.

Forceddefrostwillfinishifcertainconditionsaresatisfied. ForceddefrostcanbedoneifaboveconditionsaresatisfiedwhenDIPSW1-1ischangedfromOFFtoON. AfterDIPSW1-1ischangedfromOFFtoON,thereisnoproblemifDIPSW1-1isleftONorchangedtoOFFagain. Thisdependsontheserviceconditions.


Theblacksquare( )indicatesaswitchposition.

Outdoor M-NET board (optional)

LED2EnergizingdisplayofM-NETboard(5Vpowersupply)

CN2MConnecttoM-NET

LED13Receiving

LED11Outdoorunitconnectingdisplay

CN5Serialcommunicationwithoutdoorboard

SW11M-NETaddress(1sdigit)

SW12M-NETaddress(10sdigit)

SW1SwitchforcommunicationdisplaybetweenM-NETandoutdoorboard

CNDPowersupply(5V/12V)input2 to 35VDCInput1 to 312VDCInput))

1, 2 : + 3:– ][

LED12Transmitting

LED1EnergizingdisplayofM-NETboard(12Vpowersupply)

OCH582B

63

*2 ‘Powerfailureautomaticrecovery’canbesetbyeitherremotecontrollerorthisDIPSW.IfoneofthemissettoON,‘Autorecovery’activates.Pleaseset“Autorecovery”basicallybyremotecontrollerbecauseallunitsdonothaveDIPSW.

Pleaserefertotheindoorunitinstallationmanual.*3SW7-1issettingchangeoverofDemand/Lownoise.Itiseffectiveonlyincaseofexternalinput. (Localwiringisnecessary.Refertothenextpage:Specialfunction)*4PleasedonotuseSW7-3to7-6usually.Troublemightbecausedbytheusagecondition.*5SW5-1to5:Functionswitch

Type ofSwitch Switch No. Function

Action by the switch operationEffective timing

ON OFF

DIP switch

SW5

1 Nofunction — — —

2 Powerfailureautomaticrecovery*2 Autorecovery Noautorecovery WhenpowersupplyON

3,4,5 Nofunction — — —6 Modelselect FollowingSW5-6reference

SW7*4

1 Modeselect*3 Demandfunction Lownoisemode Always2 Nofunction — — —3 MaxHzsetting(cooling) MaxHz(cooling)o0.8 Normal Always4 MaxHzsetting(heating) MaxHz(heating)o0.8 Normal Always5 Nofunction — — —6 Defrostsetting Forhighhumidity Normal Always

SW81 Nofunction — — —2 Nofunction — — —3 Nofunction — — —

SW91 Nofunction — — —2 Functionswitch Valid Normal Always3,4 Nofunction — — —

SW6

1

Modelselect

2

3

4

5

6

7

8

SW5 6

1 2 3 4 5 6 7 8OFFON

1 2 3 4 5 6OFFON

1 2 3 4 5 6 7 8OFFON

1 2 3 4 5 6OFFON

SW6MODEL SW5-6*5

200Y

250Y

The black square (■) indicates a switch position.

OCH582B

64

Special function(a)Low-levelsoundprioritymode(Localwiring)

CN31

Types Connector Function Effective timing

Connector Start

Short Open

Action by open/ short operation

Emergency operation When power supply ONNormal

(2) Function of connector

(b)Ondemandcontrol(Localwiring)

Byperformingthefollowingmodification,operationnoiseoftheoutdoorunitcanbereducedbyabout3-4dB.ThelownoisemodewillbeactivatedwhenacommerciallyavailabletimerorthecontactinputofanON/OFFswitchisaddedtotheCNDMconnector(option)onthecontrolboardoftheoutdoorunit.• Theabilityvariesaccordingtotheoutdoortemperatureandconditions,etc.1Completethecircuitasshownwhenusingtheexternalinputadapter(PAC-SC36NA-E).(Option)2SW7-1(Outdoorunitcontrolboard):OFF3SW1ON:Lownoisemode SW1OFF:Normaloperation

ACircuitdiagramexample (lownoisemode)BOn-sitearrangementCExternalinputadapter (PAC-SC36NA-E)

X:RelayDOutdoorunitcontrolboardEMaximum10mFPowersupplyforrelay

A

SW1

Orange1

3

Brown

Red

EB

F

CNDM

XX

C D

ACircuitdiagramexample (Demandfunction)BOn-sitearrangementX,Y:Relay

CExternalinputadapter (PAC-SC36NA-E)DOutdoorunitcontrolboardEMaximum10mFPowersupplyforrelay

Byperformingthefollowingmodification,energyconsumptioncanbereducedto0–100%ofthenormalconsumption.ThedemandfunctionwillbeactivatedwhenacommerciallyavailabletimerorthecontactinputofanON/OFFswitchisaddedtotheCNDMconnector(option)onthecontrolboardoftheoutdoorunit.1Completethecircuitasshownwhenusingtheexternalinputadapter(PAC-SC36NA-E).(Option)2BysettingSW7-1onthecontrolboardoftheoutdoorunit,theenergyconsumption(comparedtothenormalconsumption)canbelimitedasshownbelow.

SW7-1 SW2 SW3 Energyconsumption

Demandfunction ON

OFF OFF 100%ON OFF 75%ON ON 50%OFF ON 0%(Stop)

A

SW2 SW3

Orange1

3

Brown

Red

CNDM

Y

XX Y

F

B E

C D

OCH582B

65

<Display function of inspection for outdoor unit>TheblinkingpatternsofbothLED1(green)andLED2(red)indicatethetypesofabnormalitywhenitoccurs.Typesofabnormalitycanbeindicatedindetailsbyconnectinganoptionalpart‘A-ControlServiceTool(PAC-SK52ST)’toconnectorCNMonoutdoorcontrollerboard.

1Be sure to replace the 4-way valve.2Check refrigerant pipes for disconnection or leakage.3After the recovery of refrigerant, vacuum dry the whole refrigerant circuit.4Refer to “10-6.HOW TO CHECK THE PARTS”.5Check refrigerant circuit for operation.

F5

—

—

—E6

E7

—

—

E0

E3

E4

E5

EF

PL

Ed

A0–A8

[Display] (1)Normal condition

(2)Abnormal condition

Unit conditionOutdoor controller board A-Control Service Tool

LED1 (Green) LED2 (Red) Check code

When the power is turned onWhen unit stopsWhen compressor is warming upWhen unit operates

Lighted LightedLightedLightedLighted

Not lighted

Indication of the displayAlternately blinking display

Operation modeNot lighted

Lighted

00, etc.08, etc.

C5, H7, etc.

Indication ErrorCheck code

*1

Outdoor controller boardContents Inspection method

LED1 (Green) LED2 (Red)1 blinking 2 blinking

2 blinking 1 blinking

2 blinking

3 blinking

4 blinking

5 blinking

Connector (63H) is open.

Startup time over

Check code is not defined.

Miswiring of indoor/outdoor unit conne-cting wire, excessive number of indoor units (4 units or more)Miswiring of indoor/outdoor unit co-nnecting wire (converse wiring or di-sconnection)

Indoor/outdoor unit communication error(signal receiving error) is detected by in-door unit. Indoor/outdoor unit communication error(transmitting error) is detected by indoorunit.Indoor/outdoor unit communication error(signal receiving error) is detected by outdoor unit.Indoor/outdoor unit communication error (transmitting error) is detected by outdoorunit.Remote controller signal receiving error is detected by remote controller.

Remote controller transmitting error is detected by remote controller.

Remote controller signal receiving error is detected by indoor unit.

Remote controller transmitting error is detected by indoor unit.

Serial communication error<Communication between outdoor controller board and outdoor power board><Communication between outdoor controller board and M-NET P.C. board>Communication error of M-NETsystem

*1.Check code displayed on remote controller

1Check if indoor/outdoor connecting wire is connected correctly.2Check if 4 or more indoor units are connected to outdoor unit.3Check if noise entered into indoor/outdoor connecting wire or power supply.4Re-check error by turning off power, and on again.

1Check if connector (63H) on the outdoor controller board is not disconnected. 2Check continuity of pressure switch (63H) by tester.

1Check if connector (CN4) on outdoor controller board and outdoor power board is not disconnected.2Check if there is poor connection of connector on outdoor controller board(CNMNT and CNVMNT).3Check M-NET communication signal.

1Check if remote controller is MA remote controller(PAR-21MAA).2Check if noise entered into transmission wire of remote controller.3Check if noise entered into indoor/outdoor connecting wire.4Re-check error by turning off power, and on again.

1Check if connecting wire of indoor unit or remote controller is connected correctly.2Check if noise entered into transmission wire of remote controller.3Re-check error by turning off power, and on again.

1Check if indoor/outdoor connecting wire is connected correctly.2Check if noise entered into indoor/outdoor connecting wire or power supply.3Check if noise entered into indoor/outdoor controller board.4Re-check error by turning off power, and on again.

P.30

P.31(EA)P.31(Eb)P.31(EC)P.37

P.37

P.37(E8)P.37(E9)P.36

P.36

P.36

P.36

P.37

P.38

P.38

P.39 toP.42

Detailedreference

page

OCH582B

66

U2

U1

U8

UdUF

UPUHU6U3

U4

U5

U9

P1P2P9

P4

P5

P6

P8

Indication ErrorCheckcode*1

Outdoor controller boardContents Inspection method

LED1 (Green) LED2 (Red)3 blinking 1 blinking

2 blinking

3 blinking

*1 Check code displayed on remote controller*2 Refer to the indoor unit’s service manual.

4 blinking

5 blinking

6 blinking

7 blinking

1 blinking

2 blinking

3 blinking

4 blinking

4 blinking

Abnormality of comp. surfacethermistor(TH32)

1Check if stop valves are open.2Check if connectors (TH32 and LEV-A) on outdoor controller board are not disconnected.3Check if unit is filled with specified amount of refrigerant.4Measure resistance values among terminals on indoor valve and outdoor linear expansion valve using a tester.

Abnormal high pressure (High pressure switch 63H operated.)

Abnormality of outdoor fan motor rotational speed

1Check if indoor/outdoor units have a short cycle on their air ducts.2Check if connector (63H) on outdoor controller board is not disconnected.3Check if heat exchanger and filter is not dirty.4Measure resistance values among terminals on linear expansion valve using a tester.

1Check if stop valves are open.2Check looseness, disconnection, and converse connection of compressor wiring.3Measure resistance values among terminals on compressor using a tester.4Check if outdoor unit has a short cycle on its air duct.

Compressor overcurrent breaking(Start-up locked)Compressor overcurrent breakingAbnormality of current sensor (P.B.)Abnormality of power moduleOpen/short of comp. surface thermistor (TH32)Open/short of outdoor thermistors(TH3, TH6, TH7 and TH8)

1Check if connectors(TH3, TH6 ,TH7 and TH32)on outdoor controller board and connector (CN3) on outdoor power board are not disconnected.2Measure resistance value of outdoor thermistors.

Abnormality of heat sinktemperature

1Check if indoor/outdoor units have a short cycle on their air ducts.2Measure resistance value of outdoor thermistor(TH8).

1Check the outdoor fan motor.2Check if connector (TH3) on outdoor controller board is disconnected.

Abnormality of voltage 1Check looseness, disconnection, and converse connection of compressor wiring.2Measure resistance value among terminals on compressor using a tester.3Check if power supply voltage decreases.4Check the wiring of CN52C.

Abnormality of room temperature thermistor (TH1)Abnormality of pipe temperature thermistor /Liquid (TH2)Abnormality of pipe temperature thermistor/Condenser-Evaporator

1Check if connectors (CN20, CN21, CN29 and CN44) on indoor controller board are not disconnected.2Measure resistance value of indoor thermistors.

Abnormality of drain sensor (DS)Float switch(FS) connector openIndoor drain overflow protection

1Check if connector (CN31)(CN4F) on indoor controller board is not disconnected.2Measure resistance value of indoor thermistors.3Measure resistance value among terminals on drain pump using a tester.4Check if drain pump works.5Check drain function.

Freezing (cooling)/overheating (heating) protection

1Check if indoor unit has a short cycle on its air duct.2Check if heat exchanger and filter is not dirty.3Measure resistance value on indoor and outdoor fan motors.4Check if the inside of refrigerant piping is not clogged.

Abnormality of pipe temperature

1Check if indoor thermistors(TH2 and TH5) are not disconnected from holder.2Check if stop valve is open.3Check converse connection of extension pipe. (on plural units connection)4Check if indoor/outdoor connecting wire is connected correctly. (on plural units connection)

P.32

P.32

P.33

P.35P.35

P.35P.35P.33P.32

P.33

P.33

P.34

*2*2*2

*2

*2

*2

Detailedreference

page

Protection from overheat operation(TH3)

OCH582B

67

<Outdoor unit operation monitor function>[When optional part ‘A-Control Service Tool (PAC-SK52ST)’ is connected to outdoor controller board (CNM)]DigitalindicatorLED1displays2digitnumberorcodetoinformoperationconditionandthemeaningofcheckcodebycontrollingDIPSW2on‘A-ControlServiceTool’.OperationindicatorSW2:Indicatorchangeofselfdiagnosis

SW2setting

1

ON

2 3 4 5 6

Displaydetail Explanationfordisplay Unit

<Digital indicator LED1 working details>(Besurethatthe1to6intheSW2aresettoOFF.)(1)DisplaywhenthepowersupplyON

WhenthepowersupplyON,blinkingdisplaysbyturns.Waitfor4minutesatthelongest.

(2)Whenthedisplaylights(Normaloperation)1Operationmodedisplay.

1

ON

2 3 4 5 6

(Initialsetting)

SW2

1 secondinterval

LED1(Lighting)

Display Operation ModelThe tens digit: Operation mode The ones digit: Relay output

OCHd

Display

012345678A

CompressorWarming-upCompressor 4-way valve Solenoid valve

————ONONONON——

————————ONON

——ONON——ONON—ON

—ON—ON—ON—ON——

OFF/FANCOOLING/DRY *

HEATINGDEFROSTING

2DisplayduringerrorpostponementPostponementcodeisdisplayedwhencompressorstopsduetotheworkofprotectiondevice.Postponementcodeisdisplayedwhileerrorisbeingpostponed.

*C5isdisplayedduringreplacementoperation.

(3)WhenthedisplayblinksInspectioncodeisdisplayedwhencompressorstopsduetotheworkofprotectiondevices.

Display Contents to be inspected (When power is turned on)F5E8E9EAEbEC

E0–E7

63H connector(yellow) is open.Indoor/outdoor communication error (Signal receiving error) (Outdoor unit)Indoor/outdoor communication error (Transmitting error) (Outdoor unit)Miswiring of indoor/outdoor unit connecting wire, excessive number of indoor units (4 units or more)Miswiring of indoor/outdoor unit connecting wire(converse wiring or disconnection)Startup time overCommunication error except for outdoor unit

Display Inspection unit01234

Outdoor unitIndoor unit 1Indoor unit 2Indoor unit 3Indoor unit 4

Display Contents to be inspected (During operation)U1U2U3U4U5U6U8UdUFUHULUPPL

P1–P8A0–A7

Abnormal high pressure (63H operated)Abnormal comp. surface thermistor, shortage of refrigerantOpen/short circuit of comp. surface thermistor(TH32)Open/short of outdoor unit thermistors (TH3, TH6, TH7 and TH8)Abnormal temperature of heat sinkAbnormality of power moduleAbnormality in outdoor fan motorOverheat protectionCompressor overcurrent interruption (When Comp. locked)Current sensor errorAbnormal low pressureCompressor overcurrent interruptionAbnormality of refrigerantAbnormality of indoor unitsCommunication error of M-NET system

OCH582B

68

SW2setting

1

ON

2 3 4 5 6

Displaydetail Explanationfordisplay UnitPipetemperature/Liquid(TH3)−40to90

−40to90(Whenthecoilthermistordetects0:orbelow,“–”andtemperaturearedisplayedbyturns.)(Example)When−10:;0.5s0.5s2s

:

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

Comp.surfacetemperature(TH32)−52to221

OutputstepofoutdoorFAN0to10

ThenumberofON/OFFtimesofcom-pressor0to9999

Compressorintegratingoperationtimes0to9999

−52to221(Whenthecomp.surfacethermistordetects100:ormore,hundredsdigit,tensdigitandonesdigitaredisplayedbyturns.)(Example)When105:;0.5s0.5s2s

:

Step

100times

10hours

0to10

0to9999(Whenthenumberoftimesis100ormore,hundredsdigit,tensdigitandonesdigitaredisplayedbyturns.)(Example)When42500times(425×100times);0.5s0.5s2s

0to9999(Whenitis100hoursormore,hundredsdigit,tensdigitandonesdigitaredisplayedbyturns.)(Example)When2450hours(245×10hours);0.5s0.5s2s

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

Compressoroperatingcurrent0to50

LEV-Aopeningpulse0to480

0to50(Omitthefiguresafterthedecimalfractions.)

0to480(Whenitis100pulseormore,hundredsdigit,tensdigitandonesdigitaredisplayedbyturns.(Example)When150pulse;0.5s0.5s2s

A

Pulse

Errorpostponementcodehistory(1)ofoutdoorunit

PostponementcodedisplayBlinking:DuringpostponementLighting:Cancellationofpostponement“00”isdisplayedincaseofnopostponement.

Codedisplay

Codedisplay

Operationmodeonerroroccurring OperationmodeofwhenoperationstopsduetoerrorisdisplayedbysettingSW2likebelow.

1

ON

2 3 4 5 6

(SW2)

10

1

ON

2 3 4 5 6

Compressoroperatingfrequency0to255

0to255(Whenitis100 Hzormore,hundredsdigit,tensdigitandonesdigitaredisplayedbyturns.(Example)When125Hz;0.5s0.5s2s

Hz

1 05

4 25

2 45

1 25

1 50

1

ON

2 3 4 5 6


OCH582B

69

SW2setting

1

ON

2 3 4 5 6

Displaydetail Explanationfordisplay UnitPipetemperature/Liquid(TH3)onerroroccurring−40to90

−40to90(Whenthecoilthermistordetects0:orbelow,“–”andtemperaturearedisplayedbyturns.)(Example)When−15:;0.5s0.5s2s

:

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

Comp.surfacetemperature(TH32)onerroroccurring−52to221

Compressoroperatingcurrentonerroroccurring0to50

Errorhistory(1)(latest)Alternatedisplayofabnormalunitnumberandcode

Errorhistory(2)Alternatedisplayoferrorunitnumberandcode

−52to221(Whenthetemperatureis100:ormore,thehundredsdigit,tensdigitandonesdigitaredisplayedbyturns.)(Example)When130:;0.5s0.5s2s

:

A

Codedisplay

Codedisplay

0to50

Whennoerrorhistory,“0”and“––”aredisplayedbyturns.

Whennoerrorhistory,“0”and“––”aredisplayedbyturns.

1

ON

2 3 4 5 6

ThermostatONtime0to999

Testrunelapsedtime0to120

0to999(Whenitis100minutesormore,thehundredsdigit,tensdigitandonesdigitaredisplayedbyturns.)(Example)When245minutes;0.5s0.5s2s

0to120(Whenitis100minutesormore,thehundredsdigit,tensdigitandonesdigitaredisplayedbyturns.)(Example)When105minutes;0.5s0.5s2s

Minute

Minute

15

1 30

2 45

1 05


OCH582B

70

SW2setting

1

ON

2 3 4 5 6


Capacitysettingdisplay Displayedasanoutdoorcapacitycode.

Codedisplay

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

Outdoorunitsettinginformation

Indoorpipetemperature/Liquid(TH2(1))Indoor1−39to88

Codedisplay

:

−39to88(Whenthetemperatureis0:orless,“–”andtemperaturearedisplayedbyturns.)

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

Indoorroomtemperature(TH1)8to39

Capacity CodeP200YKA 40P250YKA 50

Setting details• The tens digit (Total display for applied setting)

• The ones digit

H·P / Cooling onlySingle phase / 3 phase

Display details

0 : H·P 1 : Cooling only0 : Single phase 2 : 3 phase

Setting details

Defrosting switch

Display details

0 : Normal 1 : For high humidity

(Example)Whenheatpump,3phaseanddefrosting(normal)aresetup,“20”isdisplayed.

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

Indoorpipetemperature/Cond./Eva.(TH5(1))Indoor1−39to88


:



:

:

:

8to39



1

ON

2 3 4 5 6

Thenumberofconnectedindoorunits

Unit

0to4(Thenumberofconnectedindoorunitsaredis-played.)


OCH582B

71

1

ON

2 3 4 5 6

°C

DischargesuperheatSHd0to255

Cooling=TH32−TH6Heating=TH32−TH5

0to255(Whenthetemperatureis100°Cormore,hundredsdigit,tensdigitandonesdigitaredisplayedbyturns.)

0.1A

Inputcurrentofoutdoorunit 0to500(Whenitis100ormore,hundredsdigit,tensdigitandonesdigitaredisplayedbyturns.)

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

SW2setting

1

ON

2 3 4 5 6


°C

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

Indoorsettingtemperature17to30

Outdoorpipetemperature/2-phase(TH6)−39to88

OutdoorHeatsinktemperature(TH8)−40to200

17to30

°C

°C

°C


−40to200(Whenthetemperatureis0:orless,“–”andtemperaturearedisplayedbyturns.)(Whenthethermistordetects100:ormore,hundredsdigit,tensdigitandonesdigitaredisplayedbyturns.)

OutdoorAmbienttemperature(TH7)−39to88


NormalOvervoltage errorUndervoltage errorInput current sensor errorL1-phase open errorAbnormal power synchronous signal

Display examples for multiple errors: Overvoltage (01) + Undervoltage (02) = 03 Undervoltage (02) + Power-sync signal error (08) = 0A

Description Display000102

04

08

U9errordetailhistory(latest)

Codedisplay

1

ON

2 3 4 5 6

Numberofdefrostcycles0toFFFE

2cycles

0toFFFE(inhexadecimalnotation)(WhenmorethanFFinhex(255indecimal),thenumberisdisplayedinorderof163'sand162's,and161'sand160'splaces.(Example)When5000cycles;0.5s0.5s2s

C49


DCbusvoltage300to750

300to750(Whenitis100Vormore,hundredsdigit,tensdigitandonesdigitaredisplayedbyturns.)

V1

ON

2 3 4 5 6

OCH582B

72

SW2setting Displaydetail Explanationfordisplay Unit

1

ON

2 3 4 5 6

%

Capacitysave0to100WhenairconditionerisconnectedtoM-NETandcapacitysavemodeisdemanded,avaluefrom“0”to“100”isdisplayed.Whenthereisnosettingofcapacitysave,“100”isdisplayed.

0to100(Whenthecapacityis100%hundredsdigit,tensdigitandonesdigitaredisplayedbyturns.)(Example)When100%;0.5s0.5s2s

Codedisplay



Codedisplay



Codedisplay

Errorhistory(3)(Oldest)Alternatedisplayofabnormalunitnum-berandcode.

Whennoerrorhistory,“0”and“––“aredisplayedbyturns.

3:Outdoorpipetemperature/Liquid(TH3)6:Outdoorpipetemperature/2-phase(TH6)7:OutdoorAmbienttemperature(TH7)8:OutdoorHeatsink(TH8)

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

Errorthermistordisplay

Whenthereisnoerrorthermistor,“–“isdisplayed. Code

display

Operationfrequencyonerroroccurring0to255

0to255(Whenitis100Hzormore,hundredsdigit,tensdigitandonesdigitaredisplayedbyturns.)(Example)When125Hz;0.5s0.5s2s

1

ON

2 3 4 5 6Hz

Fansteponerroroccurring0to10

0to10

1

ON

2 3 4 5 6Step

001

251


:

Indoorroomtemperature(TH1)onerroroccurring8to39

8to39

1

ON

2 3 4 5 6

OCH582B

73


:

Indoorpipetemperature/Liquid(TH2)onerroroccurring−39to88

−39to88(Whenthetemperatureis0°Corless,“–”andtemperaturearedisplayedbyturns.)(Example)When−15°C;0.5s0.5s2s

Indoorpipetemperature/Cond./Eva.(TH5)onerroroccurring−39to88


Outdoortemperature/2-phasepipe(TH6)onerroroccurring−39to88


Outdoortemperature/Ambient(TH7)onerroroccurring−39to88


Outdoortemperature/Heatsink(TH8)onerroroccurring−40to200

−40to200(Whenthetemperatureis0°Corless,“–”andtemperaturearedisplayedbyturns.)(Whenthetemperatureis100°Cormore,hundredsdigit,tensdigitandonesdigitaredisplayedbyturns.)

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

15

15

15

15

:

:

:

:


:

0to255(Whenthetemperatureis100°Cormore,hundredsdigit,tensdigitandonesdigitaredisplayedbyturns.)(Example)When150°C;0.5s0.5s2s

SubcoolonerroroccurringSC0to130


0to130(Whenthetemperatureis100°Cormore,hundredsdigit,tensdigitandonesdigitaredisplayedbyturns.)(Example)When115°C;0.5s0.5s2s

5011

ON

2 3 4 5 6

DischargesuperheatonerroroccurringSHd0to255


1

ON

2 3 4 5 6

:

151

154

Thermo-ONtimeuntilerrorstops0to999

0to999(Whenitis100minutesormore,hundredsdigit,tensdigitandonesdigitaredisplayedbyturns.)(Example)When415minutes;0.5s0.5s2s1

ON

2 3 4 5 6 Minute

OCH582B

74



−39to88(Whenthetemperatureis0°Corless,“–”andtemperaturearedisplayedbyturns.)


−39to88(Whenthetemperatureis0°Corless,“–”andtemperaturearedisplayedbyturns.)

Whenthereisnoindoorunit,“00”isdisplayed.

:

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

:

Seconds

1

ON

2 3 4 5 6 Code


Timetocurrentlimitactivatesfromcom-pressorturnsON.0to180

0to180

DetailedcodeofcheckcodeU9

NormalOvervoltage errorUndervoltage errorT open-phaseAbnormal power synchronous signalDefective power boardQ1 current, overvoltage

Description Display0001020408

10

Detected at—

Power boardPower board

Controller boardPower board

Power board

Controllingstatusofcompressoroperatingfrequency

1

ON

2 3 4 5 6 Codedisplay

Thefollowingcodewillbeahelptoknowtheoperatingstatusofunit.

Display Compressor operating frequency control

Display Compressor operating frequency control

Primary current controlSecondary current control

12

1

4

8

2

•The tens digit

•The ones digit (In this digit, the total number of activated control is displayed.)

Preventive control for excessive temp-erature rise of discharge temperaturePreventive control for excessive temp-erature rise of condensing temperatureFrosting preventing controlPreventive control for excessive temp-erature rise of heat sink

(Example)The following controls are activated.• Primary current control• Preventive control for excessive temperature rise of condensing temperature• Preventive control for excessive temperature rise of heat sink

1a

LED

OCH582B

75

11 FUNCTION SETTING

Function Settings Mode No. Setting No. : Initial setting (when sent from the factory) Remarks

Power failure automatic recoveryIndoor temperature detecting

LOSSNAY connectivity

Power supply voltageAuto operation mode

Frost prevention temperatureHumidifier control

Change of defrosting controlRefrigerant leakagesetting (%)

OFFONAverage data from each indoor unitData from the indoor unit with remote controllerData from main remote controller*Not supportedSupported (Indoor unit does not intake outdoor air through LOSSNAY)Supported (Indoor unit intakes outdoor air through LOSSNAY)240V220V, 230VSingle set pointDual set point2: (Normal)3:When the compressor operates, the humidifier also operates.When the fan operates, the humidifier also operates.StandardFor high humidity80%60%

12123123121212121212

01

02

03

04

06

15

16

17

21

The setting is applied to all the units in the same refrigerant system.

Meaning of "Function setting"mode02:indoor temperature detecting

No Indoor temperature(ta)=

No.1 Average data of the sensor on all the indoor units

Initialsetting

ta=(A+B)/2 ta=(A+B)/2 ta=A ta=A

No.2 The data of the sensoron the indoor unit thatconnectedwith remote controller

ta=A ta=B ta=A ta=A

No.3 The data of the sensoron main remote controller

ta=C ta=C ta=C ta=C

OUTDOOR

INDOOR

REMOTE(MAIN)

REMOTE(SUB)

INDOOR

OUTDOOR

INDOOR

REMOTE(MAIN)

REMOTE(SUB)

OUTDOOR

INDOOR

REMOTE(MAIN)

OUTDOOR

INDOOR

REMOTE(MAIN)

REMOTE(SUB)

INDOOR

11-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLEREachfunctioncanbesetasnecessaryusingtheremotecontroller.Thesettingoffunctionforeachunitcanonlybedonebytheremotecontroller.Selectfunctionavailablefromthetable1.

<Table1>Functionselections(1)Functionsavailablewhensettingtheunitnumberto00(Select00referringto4settingtheindoorunitnumber.)

*Thefunctionisavailableonlywhenthewiredremotecontrollerisused.Thefunctionisnotavailableforfloorstandingmodels.

OCH582B

76

Floorstanding

PSA-KA

———————————————

Function Settings No.Mode

No.Setting

: Initial setting (Factory setting)- : Not available

4-Waycassette

Ceiling suspended Wall mounted

PLA-BA

Filter sign 100h 12500h 07 2No filter sign indicator 3

Air flow Quiet 1(Fan speed) Standard 08 2

High ceiling 3No.of air outlets 4 directions 1

3 directions 09 22 directions 3

Optional high efficiency Not supported 10 1filter Supported 2Vane setting No vanes (Vane No.3 setting : PLA only) 1

Vane No.1 setting 11 2Vane No.2 setting 3

Optional humidifier Not supported 13 1(PLA only) Supported 2Vane differential setting No.1 setting (TH5: 24–28°C) 1in heating mode No.2 setting (Standard, TH5:28–32°C) 14 2(cold wind prevention) No.3 setting (TH5: 32–38°C) 3Swing Not available Swing 23 1

Available Wave air flow 2Set temperature in heating Available 24 1mode (4 deg up) *

* PKA-HAL/KAL: 2 deg up

Not available 2Fan speed during the Extra low 1heating thermo OFF Stop 25 2

Set fan speed 3Fan speed during the Set fan speed 27 1cooling thermo OFF Stop 2Detection of abnormality of Available 28 1the pipe temperature (P8) Not available 2

}PLA-BA

PKA-HAL PKA-KAL

—

——————————

———————————

PSA-KA

———————————————

PCA-KAQ

———

——

Ceiling concealed

PEA-GA

—

—

—

—

—

—

—

—

—

——

—

(2)Functionsavailablewhensettingtheunitnumberto01–03orAL(07incaseofwirelessremotecontroller)•Whensettingfunctionsforanindoorunitinanindependentsystem,settheunitnumberto01referringto4settingtheindoorunitnumberofOperatingProcedure.

•Whensettingfunctionsforasimultaneous-TwinTripleindoorunitsystem,settheunitnumberto01to03foreachindoorunitincaseofselectingdifferentfunctionsforeachunitreferringto4settingtheindoorunitnumberofOperatingProcedure.

•WhensettingthesamefunctionsforanentiresimultaneousTwinTriple-indoorunitsystem,setrefrigerantaddresstoAL(07incaseofwirelessremotecontroller)referringto4settingtheindoorunitnumberofOperatingProcedure.

PEAD-RP•JA(L)Q

Function Settings No.Mode

No.Setting : Initial setting

(Factory setting)Filter sign 100h 1

2500h 07 2No filter sign indicator 3

External static pressure 35/50/70/100/150Pa 0810

12

Extra low

3

Fan speed during theheating thermo OFF Stop 25

1

Set fan speed2

27 12

Detection of abnormalityof the pipe

128 2

Set temperature in heating24mode (4 deg up)

Refer to the right tableExternal static pressure 35/50/70/100/150Pa Refer to the right table

AvailableNot available

Fan speed during thecooling thermo OFF

Set fan speedStopAvailableNot available

External static pressure

Setting No. Initial setting (Factory setting)

35Pa50Pa70Pa100Pa150Pa

23123

Mode No. 08 Mode No. 1011222

Mode No.11Setting No. Settings PLA-BA PCA-KAQ

1 No VanesVane No.3 setting

( Downward position than the standard )Less smudging No vane function

2 Vane No.1 setting Standard Standard3 Vane No.2 setting Less draft * (Upward position than the standard) Less draft * (Upward position than the standard)

* Be careful of the smudge on ceiling.

OCH582B

77

F1 F2 F3 F4

Main


Main menuMaintenanceInitial settingService

F1 F2 F3 F4

Service menu

CursorSelect:

Enter maintenance password

unem ecivreS

unem ecivreS

rosruC

rosruC

:unem niaM

:unem niaM


Maintenance passwordRemote controller check

Service menu

Service menu:

Not available.Please stop the unit.

2 WhentheServicemenuisselected,awindowwillappearaskingforthepass-word.

Toenter thecurrentmaintenancepassword(4numericaldigits),move thecursortothedigityouwanttochangewiththe F1 or F2 button.

Seteachnumber(0through9)withthe F3 or F4 button.

Then,pressthe button.


Atthemaindisplay,themenubuttonandselect"Service"tomakethemaintenancesetting.

Maintenance password is required

Note: The initial maintenance password is "9999". Change the default password as necessary to prevent unauthorized access. Have the password available for those who need it.

: If you forget your maintenance password, you can initialize the password to the default password "9999" by pressing and holding the F1 and F2 buttons simultaneously for three seconds on the maintenance password setting screen.

3 Ifthepasswordmatches,theServicemenuwillappear.

Thetypeofmenuthatappearsdependsontheconnectedindoorunits’type.

Note: Air conditioning units may need to be stopped to make certain set-tings. There may be some settings that cannot be made when the system is centrally controlled.

Ascreenwillappearthatindicatesthesettinghasbeensaved.

Navigating through the screens•TogobacktotheMainmenu.................. button

•Toreturntothepreviousscreen............... button

11-1-1. Selecting functions using the wired remote controller <PAR-30MAA> <PAR-31MAA>

<Service menu>

OCH582B

78

F1 F2 F3 F4

unem ecivreS

rosruC:unem niaM


F1 F2 F3 F4

Function setting

Cursor AddressMonitor:

Ref. addressUnit No. Grp./1/2/3/4/All

F1 F2 F3 F4

Function setting

Cursor CursorRequest:

Ref. addressMode 1Mode 2Mode 3Mode 4

Grp.

F1 F2 F3 F4

Function setting

Cursor CursorRequest:

Ref. addressMode 1Mode 2Mode 3Mode 4

Grp.

2 Settheindoorunitrefrigerantaddressesandunitnumberswiththe F1through F4 buttons,andthenpressthe buttontoconfirmthecurrentsetting.

Select"Functionsetting"withthe F1 or F2 button,andpressthe button.

3 Whendatacollectionfromtheindoorunitsiscompleted,thecurrentsettingofthesystemappearshighlighted.

Non-highlighteditemsindicatethatnofunctionsettingsaremade.Screenappearancevariesdependingonthe"UnitNo."setting.

4 Usethe F1 or F2 button tomove thecursor toselect themodenumber,andchangethesettingnumberwiththe F3 or F4 button.


<Checking the indoor unit No.>Whenthe buttonispressed,thetargetindoorunitwillstartfanoperation.Iftheunitiscommonorwhenrunningallunits,allindoorunitsfortheselectedrefrigerantaddresswillstartfanoperation.

F1 F2 F3 F4

Function settingRef. address

Sending data

5 Whenthesettingsarecompleted,press the button tosend thesettingdatafromtheremotecontrollertotheindoorunits.Whenthetransmissionissuccessfullycompleted,thescreenwillreturntotheFunctionsettingscreen.

Note: • Make the above settings only on Mr. Slim units as necessary.• The above function settings are not available for the City Multi units.• Table 1 summarizes the setting options for each mode number. Refer to

the indoor unit Installation Manual for the detailed information about ini-tial settings, mode numbers, and setting numbers for the indoor units.

• Be sure to write down the settings for all functions if any of the initial settings has been changed after the completion of installation work.

<Function setting>

OCH582B

79

ON/OFF TEMP

FAN

VANEMODE

CHECK LOUVER

TEST RUN

AUTO STOP

AUTO START

h

min

CHECK

RESETSET CLOCK

Flow of function selection procedureThe flow of the function selection procedure is shown below. This example shows how to turn off the function that raises the set temperature by 4 degrees during HEAT operation. (Mode 24: 2) The procedure is given after the flow chart.

1 Check the function selection setting.

2 Switch to function selection mode. (Enter address "50" in check mode, then press the button.)

Check mode is the mode entered whenyou press the CHECK button twice to display"CHECK".

3 Specify unit No. "01" (since the function applies to unit 01). (Set address "01" while still in check mode, then press the button.)Note: You cannot specify the refrigerant address.

4 Select mode No. "24" (function that raises set temperature by 4 degrees during HEAT operation). (Set address "24" while still in check mode, then press the button.)

6

Finished

8 End function selection mode. (End check mode.)

YES

NO

Note: When you switch to function selection mode on the wireless remote controller's operation area, the unit ends function selection mode automatically if nothing is input for 10 minutes or longer.

5 Select setting No. "02" (OFF). (Set address "02" while still in check mode, then press the button.)

Change unit No.

YES

NO

7

h

min

h

h

[Flow of function selection procedure]

11-1-2. Selecting functions using the wireless remote controller (Type C)Functionscanbeselectedwiththewirelessremotecontroller.Functionselectionusingwirelessremotecontrollerisavailableonlyforrefriger-antsystemwithwirelessfunction.Refrigerantaddresscannotbespecifiedbythewirelessremotecontroller.

Bysettingunitnumberwiththebutton,specifiedindoorunitstartsperformingfanoperation.Detectwhichunitisassignedtowhichnumberusingthisfunction.IfunitnumberissettoAL,alltheindoorunitsinsamerefrigerantsystemstartperformingfanoperationsimultaneously.

[Operating instructions]1Checkthefunctionsettings.2Pressthebuttontwicecontinuously.→CHECKislitand“00”blinks. PresstheTEMPbuttononcetoset“50”.Directthewirelessremotecontrollertowardthereceiveroftheindoorunitandpress thebutton.3Settheunitnumber. PresstheTEMPbuttontosettheunitnumber.(Press“01”tospecifytheindoorunitwhoseunitnumberis01.) Directthewirelessremotecontrollertowardthereceiveroftheindoorunitandpressthebutton.

Notes: 1.Ifaunitnumberthatcannotberecognizedbytheunitisentered,3beepsof0.4secondswillbeheard.Reentertheunitnumbersetting. 2.Ifthesignalwasnotreceivedbythesensor,youwillnothearabeepora“doublebeep”maybeheard.Reentertheunitnumbersetting.4Selectamode. PresstheTEMPbuttontosetamode.Press“24”toturnonthefunctionthatraisesthesettemperatureby4degrees duringheatoperation.Directthewirelessremotecontrollertowardthesensoroftheindoorunitandpressthebutton. →Thesensor-operationindicatorwillflashandbeepswillbeheardtoindicatethecurrentsettingnumber. Currentsettingnumber: 1=1beep(1second) 2=2beeps(1secondeach) 3=3beeps(1secondeach) Notes: 1.Ifamodenumberthatcannotberecognizedbytheunitisentered,3beepsof0.4secondswillbeheard.Reenterthemodenumber. 2.Ifthesignalwasnotreceivedbythesensor,youwillnothearabeepora“doublebeep”maybeheard.Reenterthemodenumber.5Selectthesettingnumber. PresstheTEMPbuttontoselectthesettingnumber.(02:Notavailable) Directthewirelessremotecontrollertowardthereceiveroftheindoorunitandpressthebutton. →Thesensor-operationindicatorwillflashandbeepswillbeheardtoindicatethethesettingnumber. Settingnumber:1=2beeps(0.4secondseach) 2=2beeps(0.4secondseach,repeatedtwice) 3=2beeps(0.4secondseach,repeated3times) Notes: 1.Ifasettingnumberthatcannotberecognizedbytheunitisentered,thesettingwillturnbacktotheoriginalsetting. 2.Ifthesignalwasnotreceivedbythesensor,youwillnothearabeepora“doublebeep”maybeheard.Reenterthesettingnumber.6Repeatsteps4and5tomakeanadditionalsettingwithoutchangingunitnumber.7Repeatsteps3 to 5tochangeunitnumberandmakefunctionsettingsonit.8Completethefunctionsettings Press button.

Do not use the wireless remote controller for 30 seconds after completing the function setting.

h

CHECK

min

h

h

min

OCH582B

80

Functionbuttons

F1 F2 F3 F4

PresstoturnON/OFFtheindoorunit.

ON/OFF button

When the backlight is off, pressing any button turns the backlight on and does not perform its function. (except for the (ON/OFF) button)

Thefunctionsofthefunctionbuttonschangedependingonthescreen.RefertothebuttonfunctionguidethatappearsatthebottomoftheLCDforthefunctionstheyserveonagivenscreen.Whenthesystemiscentrallycontrolled,thebuttonfunctionguidethatcorrespondstothelockedbuttonwillnotappear.

Presstosavethesetting.

SELECT button

Presstoreturntothepreviousscreen.

RETURN button

PresstobringuptheMainmenu.

MENU button

Operationsettingswillappear.Whenthebacklight isoff,pressinganybuttonturnsthebacklightonanditwillstaylitforacertainperiodoftimedependingonthescreen.

Backlit LCD

Thislamplightsupingreenwhiletheunitisinoperation.Itblinkswhiletheremotecontrollerisstartinguporwhenthereisanerror.

ON/OFF lamp

Maindisplay :Presstochangetheoperationmode.Mainmenu :Presstomovethecursordown.

Function button F1

Maindisplay :Presstodecreasetemperature.Mainmenu :Presstomovethecursorup.

Function button F2

Maindisplay :Presstoincreasetemperature.Mainmenu :Presstogotothepreviouspage.

Function button F3

Maindisplay :Presstochangethefanspeed.Mainmenu :Presstogotothenextpage.

Function button F4

Fri

Room

Set temp.

Mode Temp. Fan

Cool Auto

Main


Main menuVane·Louver·Vent. (Lossnay)High powerTimerWeekly timerOU silent mode

<Main display> <Main menu>

Functionguide

11-2. FUNCTION SELECTION OF REMOTE CONTROLLER11-2-1. PAR-30MAA/PAR-31MAA

OCH582B

81

Menu structure <PAR-30MAA><PAR-31MAA>

Not all functions are available on all models of indoor units.

Energy saving

Auto returnSchedule

Night setback

Main menuPress the MENU button.Move the cursor to the desired item with the F1 and F2 buttons, and press the SELECT button.

Vane · Louver · Vent. (Lossnay)

High power

Weekly timer

Restriction

Maintenance

Initial setting

ON/OFF timerAuto-Off timer

Temp. rangeOperation lock

Manual vane angle

Main/Sub

Timer

Main display

Contrast

Display details

Auto mode

Administrator password

Language selection

Service

Input maintenance info.

Function settingLossnay (City Multi only)

CheckSelf checkMaintenance password


Test run

Clock

Auto descending panel

Filter Information

Error Information

OCH582B

82

Main menu list <PAR-30MAA><PAR-31MAA>

Setting and display items Setting detailsVane · Louver · Vent. (Lossnay) Use to set the vane angle.

•Selectadesiredvanesettingfromfivedifferentsettings.Use to turn ON/OFF the louver.•Selectadesiredsettingfrom"ON"and"OFF."Use to set the amount of ventilation.•Selectadesiredsettingfrom"Off,""Low,"and"High."

High power Use to reach the comfortable room temperature quickly.•UnitscanbeoperatedintheHigh-powermodeforupto30minutes.

Timer ON/OFF timer* Use to set the operation ON/OFF times.•Timecanbesetin5-minuteincrements.

Auto-Off timer Use to set the Auto-Off time.•Timecanbesettoavaluefrom30to240in10-minuteincrements.

Weekly timer* Use to set the weekly operation ON/OFF times.•Upto8operationpatternscanbesetforeachday.(NotvalidwhentheON/OFFtimerisenabled.)

Restriction Temp. range Use to restrict the preset temperature range.•Differenttemperaturerangescanbesetfordifferentoperationmodes.

Operation lock Use to lock selected functions.•Thelockedfunctionscannotbeoperated.

Energy saving Auto return Use to get the units to operate at the preset temperature after performing energy-save operation for a specified time period.•Timecanbesettoavaluefrom30and120in10-minuteincrements.(Thisfunctionwillnotbevalidwhenthepresettemperaturerangesarerestricted.)

Schedule* Set the start/stop times to operate the units in the energy-save mode for each day of the week, and set the energy-saving rate.•Upto4energy-saveoperationpatternscanbesetforeachday.•Timecanbesetin5-minuteincrements.•Energy-savingratecanbesettoavaluefrom0%or50to90%in10%increments.

Night setback* Use to make Night setback settings.•Select"Yes"toenablethesetting,and"No"todisablethesetting.Thetemperaturerangeandthestart/stoptimescanbeset.

Filter information Use to check the filter status.•Thefiltersigncanbereset.

Error information Use to check error information when an error occurs.•Checkcode,errorsource,refrigerantaddress,unitmodel,manufacturingnumber,contactinformation(dealer'sphonenumber)canbedisplayed.(Theunitmodel,manufacturingnumber,andcontactinformationneedtoberegisteredinadvancetobedisplayed.)

Maintenance Auto descending panel Auto descending panel (Optional parts) Up/Down you can do.

Manual vane angle Use to set the vane angle for each vane to a fixed position.

Initial setting Main/Sub When connecting two remote controllers, one of them needs to be designated as a sub controller.

Clock Use to set the current time.

Main display Use to switch between "Full" and "Basic" modes for the Main display.•Theinitialsettingis"Full."

Contrast Use to adjust screen contrast.

Display details Make the settings for the remote controller related items as necessary.Clock: Theinitialsettingsare"Yes"and"24h"format.Temperature: SeteitherCelsius(°C)orFahrenheit(°F).Room temp. : SetShoworHide.Auto mode: SettheAutomodedisplayorOnlyAutodisplay.

Auto mode Whether or not to use the Auto mode can be selected by using the button.This setting is valid only when indoor units with the Auto mode function are connected.

Administrator password The administrator password is required to make the settings for the following items.•Timersetting•Energy-savesetting•Weeklytimersetting•Restrictionsetting•Outdoorunitsilentmodesetting•Nightsetback

Language selection Use to select the desired language.Service Test run Select "Test run" from the Service menu to bring up the Test run menu.

•Testrun•DrainpumptestrunInput maintenance Select "Input maintenance Info." from the Service menu to bring up the Maintenance information screen.

The following settings can be made from the Maintenance Information screen.•Modelnameinput•SerialNo.input•Dealerinformationinput

Function setting Make the settings for the indoor unit functions via the remote controller as necessary.Check Error history: Displaytheerrorhistoryandexecute“deleteerrorhistory”.

Refrigerant leak check: Refrigerantleakscanbejudged.Smooth maintenance: Theindoorandoutdoormaintenancedatacanbedisplayed.Request code: Detailsoftheoperationdataincludingeachthermistortemperatureanderrorhistorycanbechecked.

Self check Error history of each unit can be checked via the remote controller.Maintenance password Use to change the maintenance password.Remote controller check When the remote controller does not work properly, use the remote controller checking function to trouble-

shoot the problem.

Main menu list

*Clocksettingisrequired.

OCH582B

83

12 MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

Detailsontheoperationdataincludingeachthermistortemperatureanderrorhistorycanbeconfirmedwiththeremotecontroller.

F1 F2 F3 F4

Check menu

CursorService menu:


Select"Requestcode"withthe F1 or F2 button,andpressthe button.


2 SettheRefrigerantaddressandRequestcode.

Selecttheitemtobechangedwiththe F1 or F2 button.

Selecttherequiredsettingwiththe F3 or F4 button.

■<Ref.address>setting[0]–[15]■<Requestcode>setting

Pressthe button,Datawillbecollectedanddisplayed.

F1 F2 F3 F4

Request code

Request:

Request:

Request code

Ref.addressRequest code

Cursor －＋

Ref.addressRequest code

Cursor －＋

Request code: 004Discharge temperature: 69˚C


12-1. HOW TO "MONITOR THE OPERATION DATA"12-1-1. PAR-30MAA/PAR-31MAA

OCH582B

84

Certain indoor/outdoor combinations do not have the request code function; therefore, no request codes are displayed.

Req

uest

cod

e

Request contentDescription

(Display range)Unit Remarks

0123456789101112131415161718

19

20

2122232425262728293031

32

33

34

35

3637383940414243444546474849

Operation stateCompressor-Operating current (rms)Compressor-Accumulated operating timeCompressor-Number of operation timesComp. surface temperature (TH32)Outdoor unit -Liquid pipe 1 temperature (TH3)

Outdoor unit-2-phase pipe temperature (TH6)

Outdoor unit-Outside air temperature (TH7)Outdoor unit-Heat sink temperature (TH8)

Discharge superheat (SHd)Sub-cool (SC)

Compressor-Operating frequencyCompressor-Target operating frequencyOutdoor unit-Fan output stepOutdoor unit-Fan 1 speed(Only for air conditioners with DC fan motor)Outdoor unit-Fan 2 speed(Only for air conditioners with DC fan motor)

LEV (A) opening

Primary currentDC bus voltage

Number of connected indoor unitsIndoor unit-Setting temperatureIndoor unit-Intake air temperature <Measured by thermostat>Indoor unit-Intake air temperature (Unit No. 1)<Heat mode-4-deg correction>Indoor unit-Intake air temperature (Unit No. 2)<Heat mode-4-deg correction>Indoor unit-Intake air temperature (Unit No. 3)<Heat mode-4-deg correction>Indoor unit-Intake air temperature (Unit No. 4)<Heat mode-4-deg correction>

Indoor unit -Liquid pipe temperature (Unit No. 1)Indoor unit -Liquid pipe temperature (Unit No. 2)Indoor unit -Liquid pipe temperature (Unit No. 3)Indoor unit -Liquid pipe temperature (Unit No. 4)

Indoor unit-Cond./Eva. pipe temperature (Unit No. 1)Indoor unit-Cond./Eva. pipe temperature (Unit No. 2)Indoor unit-Cond./Eva. pipe temperature (Unit No. 3)Indoor unit-Cond./Eva. pipe temperature (Unit No. 4)

Thermostat ON operating timeTest run elapsed time

Refer to 12-2-1. Detail Contents in Request Code.0–50 0–9999 0–9999 3–217 −40–90

−39–88

−39–88 −40–200

0–255 0–130

0–255 0–255 0–10

0–9999

0–9999

0–500

0–50

0–4 17–30 8–39 8–39

8–39

8–39

8–39

−39–88 −39–88 −39–88 −39–88

−39–88 −39–88 −39–88 −39–88

0–999 0–120

180–370

–A

10 hours100 times:

:

:

:

:

:

:

HzHz

Step

rpm

rpm

Pulses

AV

Units:

:

:

:

:

:

:

:

:

:

:

:

:

:

MinutesMinutes

"0" is displayed if the air conditioner is a single-fantype.

"0" is displayed if the target unit is not present.



Not possible to activate maintenance mode during the test run.

12-2. Request code list

OCH582B

85

Req

uest

cod

e



50515253545556575859606162636465666768697071727374757677787980818283

84

85868788

89

90

91

9293949596979899

100

101

102

Indoor unit-Control stateOutdoor unit-Control stateCompressor-Frequency control stateOutdoor unit-Fan control stateActuator output stateError content (U9)

Signal transmission demand capacityContact demand capacityExternal input state (silent mode, etc.)

Outdoor unit-Capacity setting displayOutdoor unit-Setting information

M-NET adapter connection (presence/absence)

Display of execution of replace/wash operation

Outdoor unit-Microprocessor version information

Outdoor unit-Microprocessor version information (sub No.)

Outdoor unit - Error postponement history 1 (latest)

Outdoor unit - Error postponement history 2 (previous)

Outdoor unit - Error postponement history 3 (last but one)

0–255

"0000": Not connected

Examples) Ver 5.01 →Auxiliary information (displayed afterversion information)Examples) Ver 5.01 A000 →

Displays postponement code. (" - - " isdisplayed if no postponement code is present)Displays postponement code. (" - - " isdisplayed if no postponement code is present)Displays postponement code. (" - - " isdisplayed if no postponement code is present)

––––––

%––

––

–

–

Ver

–

Code

Code

Code

Refer to 12-2-1.Detail Contents in Request Code.

Refer to 12-2-1.Detail Contents in Request Code.Refer to 12-2-1.Detail Contents in Request Code.








"0001": Connected

"0000": Not washed"0001": Washed

"0501"

"A000"

OCH582B

86

Req

uest

cod

e



103104105

106

107108109110111112113114115116117118119120

121

122

123

124125126127128129130131

132

133

134

135136137138139140~

146147148149150151152

Displays error history. (" --" is displayed if no history is present.)Displays error history. (" --" is displayed if no history is present.)Displays error history. (" --" is displayed if no history is present.)

: TH36 : TH67 : TH78 : TH80 : No thermistor error

Displayed in the same way as request code "0".0–50 0–9999 0–9999 3–217 −40–90

−40–200

−39–88

−39–88

0–255 0–130 0–255

0–10

0–9999

0–9999

0–500

0–999

−39–88

−39–88

−39–88

−39–88 −39–88 −39–88

CodeCodeCode

Sensornumber

–A

10 hours100 times:

:

:

:

:

:

:

Hz

Step

rpm

rpm

Pulses

Minutes

:

:

:

:

:

:

"0" is displayed if the air conditioner is a single-fan type.

Average value of all indoor units is displayed if the air condi-tioner consists of 2 or more indoor units (twin, triple, quad).Average value of all indoor units is displayed if the air condi-tioner consists of 2 or more indoor units (twin, triple, quad).

Error history 1 (latest)Error history 2 (second to last)Error history 3 (third to last)

Abnormal thermistor display(TH3/TH6/TH7/TH8)

Operation mode at time of errorCompressor-Operating current at time of errorCompressor-Accumulated operating time at time of errorCompressor-Number of operation times at time of errorComp. surface temperature (TH32) at time of errorOutdoor unit -Liquid pipe 1 temperature (TH3) at time of error

Outdoor unit-2-phase pipe temperature (TH6) at time of error

Outdoor unit-Outside air temperature (TH7) at time of errorOutdoor unit-Heat sink temperature (TH8) at time of errorDischarge superheat (SHd) at time of errorSub-cool (SC) at time of errorCompressor-Operating frequency at time of errorOutdoor unit at time of error• Fan output stepOutdoor unit at time of error• Fan 1 speed (Only for air conditioners with DC fan)Outdoor unit at time of error• Fan 2 speed (Only for air conditioners with DC fan)

LEV (A) opening at time of error

Thermostat ON time until operation stops due to error

Indoor -Liquid pipe temperature at time of error

Indoor -Cond/Eva. pipe temperature at time of error

Indoor at time of error• Intake air temperature <Thermostat judge temperature>

Indoor -Actual intake air temperatureIndoor -Liquid pipe temperatureIndoor -Cond/Eva. pipe temperature

3

OCH582B

87

Req

uest

cod

e



153

154

155

156157

158

159160161162163164165166167~

189190191

192~

764765766

767

0–9999

0–9999

0–255 Fan control data

00 **" "**" indicates fan control data.

"00 **" "**" indicates fan control data.

Refer to 12-2-1. Detail Contents in Request Code.UndefinedRefer to 12-2-1. Detail Contents in Request Code.

Undefined

Examples) Ver 5.01 → "0501"Auxiliary information (displayed after version information)Examples) Ver 5.01 A000 → "A000"

1 hour

10 hours

–

–

–

–––––

Ver

–

For indoor fan phase control

For indoor fan pulsation control

For indoor DC brushless motor control

Indoor-Fan operating time(After filter is reset)Indoor-Total operating time(Fan motor ON time)

Indoor fan output value (Sj value)Indoor fan output value(Pulsation ON/OFF)Indoor fan output value (duty value)

Indoor unit-Model setting informationIndoor unit-Capacity setting informationIndoor unit-SW3 informationWireless pair No. (indoor control board side) settingIndoor unit-SW5 information

Indoor unit-Microprocessor version informationIndoor unit-Microprocessor version information (sub No.)

Stable operation (Heat mode)Stable operation (Cool mode)

Stable operation cancellation

This request code is not provided to collect data. It is used to fix the operation state.This request code is not provided to collect data. It is used to fix the operation state.This request code is not provided to collect data. It is used to cancel the operation state that has beenfixed by request codes "765" and "766".

"

Refer to 12-2-1. Detail Contents in Request Code.

OCH582B

88

Frequency control state 2

Display Discharge temperature Condensation temperature Anti-freeze Heat sink temperatureoverheat prevention overheat prevention protection control overheat prevention

01 Controlled2 Controlled3 Controlled Controlled4 Controlled5 Controlled Controlled6 Controlled Controlled7 Controlled Controlled Controlled8 Controlled9 Controlled ControlledA Controlled Controlledb Controlled Controlled ControlledC Controlled Controlledd Controlled Controlled ControlledE Controlled Controlled ControlledF Controlled Controlled Controlled Controlled

[Operation state] (Request code :" 0")

Data display

C 4Relay output stateOperation mode

[Indoor unit – Control state] (Request code :"50 ")

Data display

Operation mode

Display Operation mode0 STOP • FANC COOL • DRYH HEATd DEFROST

Relay output state

Display Power currently Compressor Four-way valve Solenoid valvesupplied to compressor

Unit No. 4 stateUnit No. 3 state

Unit No. 2 state

Unit No. 1 state

Display State0 Normal1 Preparing for heat operation2 –3 –4 Heater is ON.5 Anti-freeze protection is ON.6 Overheat protection is ON.7 Requesting compressor to turn OFFF There are no corresponding units.

[Outdoor unit – Control state] (Request code :" 51")

Data display State0 0 0 0 Normal0 0 0 1 Preparing for heat operation0 0 0 2 Defrost

[Compressor – Frequency control state] (Request code :" 52")

Data display

0 0Frequency control state 2



Display Current limit control0 No current limit1 Primary current limit control is ON.2 Secondary current limit control is ON.

–

ONON

012345678A

–

ONONONON

–

ONON

ONON

ON

–ON

ON

ON

ON

12-2-1. Detail Contents in Request Code

OCH582B

89

[Fan control state] (Request code :"53")

Data display

Fan step correction value by heat sink temperature overheat prevention controlFan step correction value by cool condensation temperature overheat prevention control

0 0

Display Correction value− (minus) − 1

0 0

2

[Actuator output state] (Request code :"54")

Data displayActuator output state 1Actuator output state 2

0 0

Actuator output state 1

Display SV1 Four-way valve Compressor

0123456789AbCdEF

ON

ON

ON

ON

ON

ON

ON

ON

ONON

ONON

ONON

ONON

ONONONON

ONONONON

ONONONONONONONON

Actuator output state 2

Display 52C SV2 SS

01234567

ON

ON

ON

ON

ONON

ONON

ONONONON

[Error content (U9)] (Request code :"55")

Data display

Error content 1Error content 2

0 0

Error content 1 : Detected

Display Overvoltage Undervoltage L1-phase Power synchronizingerror error open error signal error

0123456789AbCdEF

Error content 2 : Detected

Display Converter Fo PAM errorerror

0123

Compressor iswarming up

1 +1+2

OCH582B

90

[Contact demand capacity] (Request code : " 61")

Data display 0 0 0Setting content

[External input state] (Request code : "62")

Data display 0 0 0Input state

Input state : Input present

Display Contact demand Silent mode Spare 1 Spare 2input input input input

0123456789AbCdEF

[Outdoor unit -– Capacity setting display] (Request code : "70")

Data display Capacity

10 50 9 35

11 6014 7120 10025 12528 14040 20050 250

[Outdoor unit – Setting information] (Request code : "71")

Data displaySetting information 1Setting information 2

0 0Setting information 1

Display Defrost mode0 Standard1 For high humidity

Setting information 2

Display Single-/ Heat pump/3-phase cooling only

0 Single-phase Heat pump1 Cooling only2 3-phase Heat pump3 Cooling only

Setting content

Display Setting value

01 50%2 75%

0%

3 100%

OCH582B

91

[Indoor unit – Model setting information] (Request code : "162" )

Data display

0 0

See the table on the right.

[Indoor unit – Capacity setting information] (Request code : "163")

Data display

0 0


Display Capacity setting state Display Capacity setting state

00 12 10 11201 16 11 12502 22 12 14003 25 13 16004 28 14 20005 32 15 22406 35, 36 16 25007 40 17 28008 45 1809 50 190A 56 1A0b 63 1b0C 71 1C0d 80 1d0E 90 1E0F 100 1F

Display Pair No. setting state

00 No. 001 No. 1 J41 disconnected02 No. 2 J42 disconnected03 No. 3 J41, J42 disconnected

[Wireless pair No. (indoor control board side) setting] (Request code :" 165")

Data display

0 0


Display Model setting state Display Model setting state

00 2001 2102 2203 2304 2405 2506 2607 2708 2809 290A 2A0b 2b0C 2C0d 2d0E 2E0F 2F10 3011

PEA-RP200/250GAQ

3112 3213 3314 3415 3516 3617 3718 3819 391A 3A1b 3b1C 3C1d 3d1E 3E1F 3F

Display Model setting state

A0A1

PCA-RP•KAQ

A2A3A4A5A6A7A8A9AAAbACAdAEAFB0B1

PKA-RP•HAL/KALPEAD-RP•JA(L)Q

B2B3B4B5B6B7B8B9BABBBCBDBEBF

PLA-RP•BA

PSA-RP•KA

OCH582B

92

13-1. SMOOTH MAINTENANCE13-1-1. PAR-30MAA/PAR-31MAA

Maintenancedata,suchasthe indoor/outdoorunit’sheatexchangertemperatureandcompressoroperationcurrentcanbedisplayedwith“Smoothmaintenance”.This cannot be executed during test operation.Depending on the combination with the outdoor unit, this may not be supported by some models.

F1 F2 F3 F4

Check menu

CursorService menu:


Smooth maintenance

Begin:

Smooth maintenance

Exit:

Ref.addressStable mode

Cursor －Address＋

Ref.addressStable mode

Stabilization→Collecting

Cool / Heat/ Normal

Cool / Heat/ Normal

Select "Smoothmaintenance"with the F1 or F2 button,andpress thebutton.


Select"Service"fromtheMainmenu,andpressthe button.

Seteachitem.

Selecttheitemtobechangedwiththe F1 or F2 button.

Selecttherequiredsettingwiththe F3 or F4 button.

■<Ref.address>setting[0]−[15]■<Stablemode>setting[Cool]/[Heat]/[Normal]

Pressthe button,Fixedoperationwillstart.Stablemodewilltakeapprox.20minutes.

1

2

13 EASY MAINTENANCE FUNCTION

Smooth maintenance

Return:Page

Ref.address CoolSub coolOU TH4 temp.OU TH6 temp.OU TH7 temp.

● Reduces maintenance work drastically. ● Enables you to check operation data of the indoor and outdoor units by remote controller.

Furthermore, use of maintenance stable-operation control that fixes the operating frequency, allows smooth inspection, even forinverter models.

Remove theservice panel.

Measurethe intake airtemperature.

Measure the dischargetemperature.

Measure the outside air temperature.

●Indoor unit ●●Outdoor unit ●

Smooth Mainte-nance Function ● Conventional inspection work

Easy maintenance information (unit)Compressor Outdoor unit Indoor unit

Accumulated operating Heat exchanger7

Intake airtime (o10 hours) temperature (:) temperature (:)Number of ON/OFF Discharge

8

4

5

1

2

963

Heat exchangertimes (o10 times) temperature (:) temperature (:)Operating Outside air Filter operatingcurrent (A) temperature (:) time* (Hours)

* The filter operating time is the time that has elapsed since the filter was reset.

Discharge temperature 60°C

ContinuetothenextpageOCH582B

93

Smooth maintenance

Return:

Smooth maintenance

Return:

Smooth maintenance

Return:

Page

Page

Page

COMP. currentCOMP. run timeCOMP. On / OffCOMP. frequency

A

Hz

Hrtimes

Hr

Ref. address Cool

Ref.address Cool

Ref.address Cool

Sub coolOU TH4 temp.OU TH6 temp.OU TH7 temp.

IU air temp.IU HEX temp.IU filter time

TheCompressor-Accumulatedoperating(COMP.run) time is10-hourunit,andtheCompressor-Numberofoperationtimes(COMP.ON/OFF) isa100-timeunit(fractionsdiscarded).


•Toreturntothepreviousscreen....... button

3Theoperationdatawillappear.

[1:1]Refrigerantaddress=00

[Twin]Refrigerantaddress=00

Outdoorunit

Indoor unit02

Indoor unit01

Outdoorunit

Remotecontroller

Remotecontroller

Indoor unit01

■ Refrigerant addressSingle refrigerant systemIn the case of single refrigerant system, the refrigerant addressis "00" and no operation is required.Simultaneous twin, triple units belong to this category(single refrigerant system).

Multi refrigerant system (group control)Up to 16 refrigerant systems (16 outdoor units) can be con-nected as a group by 1 remote controller. To check or set therefrigerant addresses.

Refrigerantaddress00




Outdoorunit

Indoor unit01

Outdoorunit

Indoor unit01

Outdoorunit

Indoor unit01

Outdoorunit

Indoor unit01

Remotecontroller

OCH582B

94

<Guide for operation condition>Inspection item Result

Pow

er s

uppl

y

Loos

e co

n-ne

ctio

n

Breaker Good RetightenedTerminal block Outdoor Unit Good Retightened

Indoor Unit Good Retightened(Insulation resistance) M"(Voltage) V1 Accumulated operating time Time2 Number of ON/OFF times Times3 Current A4 Refrigerant/heat exchanger temperature COOL : HEAT :5 Refrigerant/discharge temperature COOL : HEAT :6 Air/outside air temperature COOL : HEAT : (Air/discharge temperature) COOL : HEAT :Appearance Good Cleaning requiredHeat exchanger Good Cleaning requiredSound/vibration None Present

Air/intake air temperature COOL : HEAT : (Air/discharge temperature) COOL : HEAT :8

7

9

Refrigerant/heat exchanger temperature COOL : HEAT :Filter operating time* Time

Decorative panel Good Cleaning requiredFilter Good Cleaning requiredFan Good Cleaning requiredHeat exchanger Good Cleaning requiredSound/vibration None Present

Com-pressor

Tem

pera

ture

Cle

anli-

ness

Out

door

Uni

t

Tem

pera

ture

Cle

anlin

ess

Indo

or U

nit

* The filter operating time is the time that has elapsed since the filter was reset.

Check PointsEnter the temperature differences between 5 , 4 , 7 and 8 intothe graph given below.Operation state is determined according to the plotted areas onthe graph.For data measurements, set the fan speed to "Hi" before activat-ing maintenance mode.

Is "D000" displayed stably on the remotecontroller?(5 Discharge temperature) – (4 Outdoorheat exchanger temperature)(7 Indoor intake air temperature) – (8Indoor heat exchanger temperature)Is "D000" displayed stably on the remotecontroller?(5 Discharge temperature) – (8 Indoorheat exchanger temperature)(8 Indoor heat exchanger temperature) –(7 Indoor intake air temperature)

Coo

l

Classification Item Result

Inspection

Temperaturedifference

Hea

tInspection

Temperaturedifference

Stable Unstable

:

:

Stable Unstable

:

:

Notes:Fixed Hz operation may not be possible under the following tempera-ture ranges.A)In cool mode, outdoor intake air temperature is 40 :or higher or

indoor intake air temperature is 23 : or lower.B)In heat mode, outdoor intake air temperature is 20 : or higher or

indoor intake air temperature is 25 : or lower.

1.

If the air conditioner is operated at a temperature range other than theones above but operation is not stabilized after 30 minutes or more haveelapsed, carry out inspection.

3. In heat mode, the operation state may vary due to frost forming on theoutdoor heat exchanger.

:45

40

35

30

25

20

15

10

5

0 10 20 30 40 50 60 70 80

NormalFilter inspection

Inspection C

Inspection A

Inspection B

:45

40

35

30

25

20

15

10

5

0 10 20 30 40 50 60 70 80 ::

Normal

Filter inspectionInspection C

Inspection A

Inspection B

Cool mode Heat mode

( 7 In

door

inta

ke a

ir te

mpe

ratu

re)—

( 8In

door

heat

exc

hang

er te

mpe

ratu

re)

( 8 In

door

hea

t exc

hang

er te

mpe

ratu

re) —

( 7 In

door

inta

ke a

ir te

mpe

ratu

re)

[5 Discharge temperature] – [4 Outdoorheat exchanger temperature)

[5 Discharge temperature] – [8 Indoorheat exchanger temperature)

Res

ult

Normal operation stateFilter may be clogged.*Performance has dropped. Detailed in-spection is necessary.Refrigerant amount is dropping.Filter or indoor heat exchanger may beclogged.

Area Check itemJudgement

Cool Heat

NormalFilter inspectionInspection A

Inspection BInspection C

Note: The above judgement is just guide based on Japanese standardconditions.It may be changed depending on the indoor and outdoor temperature.

* It may be judged as "Filter inspection" due to the outdoor and indoor temperature, even though it is not clogged.

2.

OCH582B

Coverpanel(rear)

Coverpanel(front)

OPERATING PROCEDURE PHOTOS

95

14 DISASSEMBLY PROCEDURE

1. Removing the service panel and top panel (1)Removetheservicepanelfixingscrews(4forfront/5x

12),thenslidetheservicepaneldownwardtoremoveit. (Theservicepanelisfixedtothesidepanel(R)witha

hookontherightside.) (2)Removethetoppanelfixingscrews(3forfrontand3for

rear/5x12)toremovethetoppanel.

Note: When removing service panel and top panel at the same time, count one less screw since they share a screw.

2. Removing the fan motor (MF1, MF2) (1)Removetheservicepanel.(SeePhoto1)

(2)Removethewiregrillefixingscrews(4forfront/5x12),thenslidethewiregrilleupwardtoremoveit.(SeePhoto1)

(Fortheeachfanmotorontopandunder)(3)Removethescrewofnut(1forfront/M6),thenslidethe

propellerfanforwardtoremoveit. (Fortheeachfanmotorontopandunder)(4)Disconnecttheconnectors,CNF1(WHT)andCNF2(WHT)onthecontrollercircuitboardintheelectricalpartsbox.(SeePhoto4)

(5)Loosentheclampfortheleadwireonmotorsupportandseparator.

(6)Releasetheleadwirefromtheholeonseparator. (7)Removethefanmotorfixingscrews(4forfront/5x20)to

removethefanmotor.(Fortheeachfanmotorontopandunder)

Photo 2

Photo 3

Photo 1

ToppanelfixingscrewsToppanel

Servicepanelfixingscrews

ServicepanelWiregrillefixingscrews

Wiregrillefixingscrews

Slide


Coverpanel(front)fixingscrews

Fanmotorfixingscrews

Fanmotor

Fanmotorfixingscrews

Frontpanel

Propeller

Nut

Sidepanel(R)

OCH582B


96

3. Removing the electrical parts box (1)Removetheservicepanel.(SeePhoto1) (2)Removethetoppanel.(SeePhoto1) (3)Disconnectthepowersupplycablefromterminalblock. (4)Disconnecttheindoor/outdoorconnectingwirefrom

terminalblock. (5)DisconnecttheconnectorCNF1(WHT),CNF2(WHT),

TH3(WHT),TH7/6(RED),TH32(BLK),63H(YLW),21S4(GRN),LEV-A(WHT)fromthecontrollercircuitboard.<Symbolsontheboard>•Fanmotor(CNF1,CNF2)•Thermistor<Liquid>(TH3)•Thermistor<Ambient/2-PhasePipe>(TH7/6)•Thermistor<Comp.Surface>(TH32)•Highpressureswitch(63H)•4-wayvalve(21S4)•LEV(LEV-A)

(6)Loosentheclamps,fastenersandcablestrapforthelead wireintheelectricalpartsboxandseparator.(7)Loosentheleadwiresfixedtothepipeswithbands.(8)TodisconnecttheCOMPleadwire,removetheterminal

cover,thenremovetheCOMPleadwirefixingscrews(4forfront/5x12).

(9)Removetheelectricalpartsboxfixingscrews(2forfront/4x10),thenslidetheelectricalpartsboxupwardtoremoveit.

(Theelectricalpartsboxisfixedtothesidepanel(R)withahookontherightside,andtotheseparatorductwithahookontheleftside.)

Photo 4 Electricalpartsbox

Electricalpartsboxfixingscrews

Controllercircuitboard

Valvebed

Terminalcover

Compressor

Sidepanel(R)

Terminalblock(Indoor/Outdoor)Terminalblock

(Powersupply)

Valvebedfixingscrew

Valvebedfixingscrews

OCH582B

PHOTOS 4. Disassembling the electrical parts box

(1)Disconnectalltheconnectorsonthecontrollercircuitboard.(2)Toremovethecontrollercircuitboard,releaseitfromthe

support.(3)Removecontbasefixingscrews(2forfront/4x10).(Photo5)

(Thecont.baseisfixedtothecontbasepiecewithahookontheleftside.)

(4)Disconnectalltheconnectorsonthenoisefiltercircuitboard.(Photo6)

(5)Toremovethenoisefiltercircuitboard,releaseitfromthesupport.(6)RemoveN.F.basefixingscrews(2forfront/4x10).(Photo7)(7)Disconnectalltheconnectorsonthepowercircuitboard.(8)Toremovethepowercircuitboard,removepowerboardfixing

screws(4forfront/4x12),thenreleasetheboardfromthesupport.(Photo8)

(9)Thereactorisattachedtotherearsideoftheelectricalpartsbox.(Photo9)(Toremovethereactor,theelectricalpartsboxmustbeseparatedfromtheoutdoorunit.)

Note: When reassembling the electrical parts box, make sure the wirings are correct.

Photo 5

Photo 6

Photo 8

Photo 7

Photo 9

Controllercircuitboard(C.B.)

Screw

Screw

Screws

Screws Screws

Screws

Screw

Noisefilterbase

Reactor

Contbase

Powercircuitboard(P.B)

OPERATING PROCEDURE

Noisefiltercircuitboard(N.F.)

Screw

97

Photo 10

Electricalpartsbox

Thermistor<2-phasepipe>(TH6)

Cont.boxtop

5. Removing the thermistor <2-Phase Pipe> (TH6) (1)Removetheservicepanel.(SeePhoto1) (2)Removethetoppanel.(SeePhoto1) (3)DisconnecttheconnectorTH7/6(RED)onthecontrollercircuitboardintheelectricalpartsbox.(SeePhoto4) (4)Loosenthefastenerfortheleadwireintheelectricalpartsbox. (5)Loosentheclampfortheleadwireonthetopofelectricalpartsbox. (6)Pulloutthethermistor<2-phasepipe>(TH6)fromthermistorclip.

Note: When replacing thermistor <2-phase pipe> (TH6), replace it together with thermistor <Ambient> (TH7) since they are combined together. Refer to procedure No.5 on the next page to remove the thermistor <Ambient> (TH7).

OCH582B


98

6. Removing the thermistor <Ambient> (TH7) (1)Removetheservicepanel.(SeePhoto1) (2)Removethetoppanel.(SeePhoto1) (3)DisconnecttheconnectorTH7/6(RED)onthecontroller

circuitboardintheelectricalpartsbox.(SeePhoto4) (4)Loosenthefastenerfortheleadwireintheelectricalparts

box. (5)Loosentheclampsfortheleadwireontopoftheelectrical partsbox.

(6)Pulloutthethermistor<Ambient>(TH7)fromthermistorholder.

Photo 11

Leadwireofthermistor<Ambient>(TH7) Sensorholder

Photo 12

ValvebedThermistor<Comp.Surface>(TH32)

Compressor

Note: When replacing thermistor <Ambient> (TH7), replace it together with thermistor <2-phase pipe> (TH6), since they are combined together. Refer to procedure No.4 in the previous page to remove the thermistor <2-phase pipe>(TH6).

Damper Thermistor <Liquid>(TH3)

7. Removing the thermistor <Liquid> (TH3), and thermistor <Comp. surface> (TH32).

(1)Removetheservicepanel.(SeePhoto1)(2)Disconnecttheconnector,TH3(WHT)andTH32(BLK)on

thecontrollercircuitboardintheelectricalpartsbox.(SeePhoto4)

(3)Loosenthefastener,cablestrapandbandfortheleadwireonthecontrollercircuitboardintheelectricalpartsbox.

(4)Loosentheclampfortheleadwireonseparator.(5)Pulloutthethermistor<Liquid>(TH3)fromthermistorclip.(6)Removethetopdamper,thenpulloutthethermistor

<Comp.surface>(TH32)fromthermistorholder.

OCH582B


99

8. Removing the 4-way valve coil (21S4), LEV coil (LEV (A))and lead wire for high pressure switch.

(1)Removetheservicepanel.(SeePhoto1) (2)Removethetoppanel.(SeePhoto1) (3)Removetheelectricalpartsbox.(SeePhoto4) (4)Loosentheclampfortheleadwireonseparator. [Removing the lead wire for high pressure switch] (5)Disconnecttheleadwirefromthehighpressureswitch. [Removing the 4-way valve coil]

(5)Removethe4-wayvalvecoilfixingscrew(1forfront/M5)toremovethe4-wayvalvecoil.

(6)Slidethe4-wayvalvecoilforwardtoremoveit.

[Removing the LEV coil] (5)Loosentheleadwiresfixedtothepipeswithbands. (6)SlidetheLEVcoilupwardtoremoveit.

Photo 13

9. Removing the 4-way valve, LEV (LEV (A)) and high pressure switch.

(1)Removetheservicepanel.(SeePhoto1) (2)Removethetoppanel.(SeePhoto1) (3)Removetheelectricalpartsbox.(SeePhoto4) (4)Removethecoverpanel(front).(SeePhoto1) (5)Removethecoverpanel(rear).(SeePhoto1) (6)Removethevalvebed.(SeePhoto14) (7)Removethesidepanel(R). (8)Recoverrefrigerant. [Removing the 4-way valve]

(9)Removethe4-wayvalvecoil.(Seephoto13)(10)Removetheweldedpartof4-wayvalve(4positions)to

removethe4-wayvalve.

[Removing the LEV] (9)RemovetheLEVcoil.(Seephoto13)

(10)Removetheweldedpartof4-wayvalve(4positions)toremovethe4-wayvalve.

[Removing the high pressure switch]

(9)Disconnecttheleadwirefromthehighpressureswitch.(10)Removetheweldedpartofhighpressureswitch (1position)toremovethehighpressureswitch.

Note 1: Recover refrigerant without spreading it in the air.Note 2: The welded part can be removed easily by

removing the side panel (R).Note 3: When installing the following parts, cover it with

a wet cloth to prevent it from heating as the temperature below, then braze the pipes so that the inside of pipes are not oxidized;

• 4-way valve, 120°C or more • LEV, 120°C or more • High pressure switch, 100°C or more

4-wayvalvecoil(21S4)

Accumulator

LEVcoil(LEVA)

Highpressureswitch

OCH582B


Valvebedfixingscrew

100

Compressor(MC)

Valvebed

Separator

Separatorfixingscrew

Valvebedfixingscrews

Compressorfixingnut

Receiverlegfixingscrews Receiver

leg

Outlet

Inlet

Compressor(MC)

10. Removing the compressor (MC) (1)Removetheservicepanel.(SeePhoto1) (2)Removethetoppanel.(SeePhoto1) (3)Removetheelectricalpartsbox.(SeePhoto4) (4)Removethecoverpanel(front).(SeePhoto1) (5)Removethecoverpanel(rear).(SeePhoto1) (6)Removethevalvebed.(Seephoto14) (7)Removethesidepanel(R).(SeePhoto1) (8)Removethefrontpanelfixingscrews(5forfront/5x12

and2forfront/4x10),thenslidethefrontpanelupwardtoremoveit.

(Thefrontpanelisfixedwith4hooks;3ontheleftsidefixingtothesidepanel(L),andtheotherontherightsidefixingtotheseparator.)

(9)ReleasetheleadwireforFM1andFM2fromtheholeonseparator.

(10)Removetheseparatorfixingscrews(4forfront/4x10), thenslidetheseparatorupwardtoremoveit. (Theseparatorisfixedtoahookofthesideplate.) (11)Recoverrefrigerant. (12)Removetheweldedpartofcompressor(2positions). (13)Removethe3compressorfixingnuts(M6)toremovethe compressor.

Note 1: Recover refrigerant without spreading it in the air. Note 2: The compressor can be easily removed by removing separator.

Photo 14

Photo 15 11. Removing the power receiver (1)Removetheservicepanel.(SeePhoto1) (2)Removethetoppanel.(SeePhoto1) (3)Removetheelectricalpartsbox.(Seephoto4) (4)Removethecoverpanel(front).(SeePhoto1) (5)Removethecoverpanel(rear).(SeePhoto1) (6)Removethevalvebed.(SeePhoto14) (7)Removethesidepanel(R).(SeePhoto1) (8)Recoverrefrigerant.

(9)Removetheweldedpartoftheaccumulator(2positions)toremovetheaccumulator.

(10)Removereceiverlegfixingscrews(2forfront/4x10),thenslidethepowerreceiverforwardtoremoveit.

(Thepowerreceiverisfixedtothebasewithahookonthebottom.)

Note: Recover refrigerant without spreading it in the air.

Accumulator

Accumulator

OCH582B

101OCH582B

HEADOFFICE:TOKYOBLDG.,2-7-3,MARUNOUCHI,CHIYODA-KU,TOKYO100-8310,JAPAN

CCopyright2014MITSUBISHIELECTRICCORPORATIONDistributedinJun.2015No.OCH582REVISEDEDITION-BDistributedinJan.2015No.OCH582REVISEDEDITION-ADistributedinOct.2014No.OCH582MadeinJapan

Newpublication,effectiveJun.2015Specificationsaresubjecttochangewithoutnotice.

service manual r410a revised edition-b [service ref.]...

Documents