pea-rp250ga pea-rp400ga pea-rp500ga

SERVICE MANUAL

• This manual describes onlyservice data of the indoorunits.

[Model names]

PEA-RP200GAPEA-RP250GAPEA-RP400GAPEA-RP500GA

CONTENTS

1. TYPES OF CONNECTED OUTDOOR UNITS····22. SAFETY PRECAUTION ···································33. PART NAMES AND FUNCTIONS····················84. SPECIFICATIONS ··········································105. DATA·······························································116. OUTLINES AND DIMENSIONS ·····················137. WIRING DIAGRAM·········································168. REFRIGERANT SYSTEM DIAGRAM ············189. TROUBLESHOOTING····································19

10. SERVICE DATA (PARTS NAME) ···················30Indoor unit

Remote controller

SPLIT-TYPE, HEAT PUMPAIR CONDITIONERS 2007

2

1 TYPES OF CONNECTED OUTDOOR UNITS

Indoor Unit List

Indoor unit Outdoor unitPEA - RP200GAPEA - RP250GAPEA - RP400GAPEA - RP500GA

PUHZ-P200YHA / PUHZ-RP200YHA2 PUHZ-P250YHA / PUHZ-RP250YHA2

PUHZ-P200YHA x 2 / PUHZ-RP200YHA2 x 2PUHZ-P250YHA x 2 / PUHZ-RP250YHA2 x 2

Standard Model Steel fan

PEA-RP200GA

PEA-RP250GA

PEA-RP400GA

PEA-RP500GA

PEA-RP200GA.TH-AF

PEA-RP250GA.TH-AF

PEA-RP400GA.TH-AF

PEA-RP500GA.TH-AF

PEA-RP200GA.TH-AFMF

PEA-RP250GA.TH-AFMF

-

-

Model name

Specification

3

SAFETY PRECAUTION2

Cautions for units utilising refrigerant R410A

CAUTIONS RELATED TO NEW REFRIGERANT

Use new refrigerant pipes.

Make sure that the inside and outside of refrige-

rant piping is clean and it has no contamination

such as sulfur hazardous for use, oxides, dirt,

shaving particles, etc.

In addition, use pipes with specified thickness.

Store the piping to be used during installation

indoors and keep both ends of the piping sealed

until just before brazing. (Leave elbow joints, etc.

in their packaging.)

Use ester oil, ether oil or alkylbenzene oil (small

amount) as the refrigerant oil applied to flares

and flange connections.

In case of using the existing pipes for R22, be careful with

the followings.

á Be sure to perform replacement operation

before test run.

á Avoid using thin pipes.

Charge refrigerant from liquid phase of gas

cylinder.

If the refrigerant is charged from gas phase, composition

change may occur in refrigerant and the efficiency will be

lowered.

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.

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.

Use the following tools specifically designed for

use with R410A refrigerant.

The following tools are necessary to use R410A refrigerant.

Keep the tools with care.

If dirt, dust or moisture enter into refrigerant cycle, that can

cause 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.

Flare tool

Electronic refrigerant

charging scale

Vacuum pump adaptor

Size adjustment gauge

Gauge manifold

Torque wrench

Gas leak detector

Charge hose

Tools for R410AContamination inside refrigerant piping can cause deterio-

ration of refrigerant oil etc.

If dirt, dust or moisture enter into refrigerant cycle, that can

cause deterioration of refrigerant oil or malfunction of com-

pressor.

If large amount of mineral oil enter, that can cause deterio-

ration of refrigerant oil etc.

Ventilate the room if refrigerant leaks during

operation. If refrigerant comes into contact with

a flame, poisonous gases will be released.

[1] Cautions for service(1) Perform service after collecting 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.

4

[2] Storage of Piping Material

(1) Storage location

Store the pipes to be used indoors. (Warehouse at site or owner’s warehouse)Storing them outdoors may cause dirt, waste, or water to infiltrate.

(2) Pipe sealing before storage

Both ends of the pipes should be sealed until immediately before brazing.Wrap elbows and T’s in plastic bags for storage.

* The new refrigerator oil is 10 times more hygroscopic than the conventional refrigerator oil (such as Suniso). Water

infiltration in the refrigerant circuit may deteriorate the oil or cause a compressor failure. Piping materials must be stored

with more care than with the conventional refrigerant pipes.

OK

OK

NG

NG

5

[3] Brazing

No changes from the conventional method, but special care is required so that foreign matter (ie. oxide scale, water, dirt,

etc.) does not enter the refrigerant circuit.

Example: Inner state of brazed section

When non-oxide brazing was not used When non-oxide brazing was used

Items to be strictly observed:

1. Do not conduct refrigerant piping work outdoors on a rainy day.

2. Apply non-oxide brazing.

3. Use a brazing material (BCuP-3) which requires no flux when brazing between copper pipes or between a copper

pipe and copper coupling.

4. If installed refrigerant pipes are not immediately connected to the equipment, then braze and seal both ends of them.

Reasons:

1. The new refrigerant oil is 10 times more hygroscopic than the conventional oil. The probability of a machine failure if

water infiltrates is higher than with conventional refrigerant oil.

2. A flux generally contains chlorine. A residual flux in the refrigerant circuit may generate sludge.

Note:

¥ Commercially available antioxidants may have adverse effects on the equipment due to its residue, etc. When

applying non-oxide brazing, use nitrogen.

6

[4] Airtightness Test

No changes from the conventional method. Note that a refrigerant leakage detector for R22 cannot detect R407C leakage.

Halide torch R22 leakage detector

Items to be strictly observed:

1. Pressurize the equipment with nitrogen up to the design pressure and then judge the equipmentÕs airtightness, taking

temperature variations into account.

2. When investigating leakage locations using a refrigerant, be sure to use R407C.

3. Ensure that R407C is in a liquid state when charging.

Reasons:

1. Use of oxygen as the pressurized gas may cause an explosion.

2. Charging with R407C gas will lead the composition of the remaining refrigerant in the cylinder to change and this

refrigerant can then not be used.

Note:

¥ A leakage detector for R407C is sold commercially and it should be purchased.

[5] Vacuuming

1. Vacuum pump with check valve

A vacuum pump with a check valve is required to prevent the vacuum pump oil from flowing back into the refrigerant

circuit when the vacuum pump power is turned off (power failure).

It is also possible to attach a check valve to the actual vacuum pump afterwards.

2. Standard degree of vacuum for the vacuum pump

Use a pump which reaches 0.5 Torr (500 MICRON) or below after 5 minutes of operation.

In addition, be sure to use a vacuum pump that has been properly maintained and oiled using the specified oil. If the

vacuum pump is not properly maintained, the degree of vacuum may be too low.

3. Required accuracy of the vacuum gauge

Use a vacuum gauge that can measure up to 5 Torr. Do not use a general gauge manifold since it cannot measure a

vacuum of 5 Torr.

4. Evacuating time

¥ Evacuate the equipment for 1 hour after Ð755 mmHg (5 Torr) has been reached.

¥ After envacuating, leave the equipment for 1 hour and make sure the that vacuum is not lost.

5. Operating procedure when the vacuum pump is stopped

In order to prevent a backflow of the vacuum pump oil, open the relief valve on the vacuum pump side or loosen the

charge hose to drawn in air before stopping operation.

The same operating procedure should be used when using a vacuum pump with a check valve.

NG NG

7

[6] Additional refrigerant chargeWhen charging directly from cylinder· Check that cylinder for R410A on the market is syphon type.· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

[7] Service toolsUse the below service tools as exclusive tools for R410A refrigerant.

No. Specifications

1 Gauge manifold ·Only for R410A

·Use the existing fitting specifications. (UNF1/2)

·Use high-tension side pressure of 5.3MPa·G or over.

2 Charge hose ·Only for R410A

·Use pressure performance of 5.09MPa·G or over.

3 Electronic scale

4 Gas leak detector ·Use the detector for R134a, R407C or R410A.

5 Adaptor for reverse flow check ·Attach on vacuum pump.

6 Refrigerant charge base

7 Refrigerant cylinder ·Only for R410A Top of cylinder (Pink)

Cylinder with syphon

8 Refrigerant recovery equipment

Gravimeter

Unit

8

3 PART NAMES AND FUNCTIONS

Remote controllerOnce the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button.

Operation buttons

Indoor UnitPEA-RP200GAPEA-RP250GAPEA-RP400GAPEA-RP500GA

Air intake duct flange

Air outlet duct flange

Air outlet

Air intake(sucks the air inside the room into the unit)

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION CLEAR

TEST

TEMP.

MENU

BACK DAYMONITOR/SET

CLOCK

ON/OFF

Set Temperature buttons

Down

Up

Timer Menu button(Monitor/Set button)

Mode button (Return button)

Set Time buttons

Back

Ahead

Timer On/Off button(Set Day button)

Opening thedoor.

ON/OFF button

Fan Speed button

Filter button(<Enter> button)

Test Run button

Check button (Clear button)

Airflow Up/Down button

Louver button( Operation button)

To preceding operationnumber.

Ventilation button( Operation button)

To next operation number.

9

Display

For purposes of this explanation,all parts of the display are shownas lit. During actual operation, onlythe relevant items will be lit.

˚F˚C

˚F˚C

ERROR CODEAFTER

TIMERTIME SUN MON TUE WED THU FRI SAT

ON

OFF

Hr

AFTER

FILTERFUNCTION

ONLY1Hr.

WEEKLYSIMPLE

AUTO OFF

Identifies the current operationShows the operating mode, etc.* Multilanguage display is sup-

ported.

“Centrally Controlled” indicatorIndicates that operation of the re-mote controller has been prohib-ited by a master controller.

“Timer Is Off” indicatorIndicates that the timer is off.

Temperature SettingShows the target temperature.

Day-of-WeekShows the current day of the week.

Time/Timer DisplayShows the current time, unless the simple or Auto Offtimer is set.If the simple or Auto Off timer is set, shows the timeremaining.

“Sensor” indicationDisplayed when the remote controller sensor is used.

“Locked” indicatorIndicates that remote controller but-tons have been locked.

“Clean The Filter” indicatorComes on when it is time to clean thefilter.

Timer indicatorsThe indicator comes on if the corre-sponding timer is set.

Up/Down Air Direction indica-torThe indicator shows the direc-tion of the outcoming airflow.

“One Hour Only” indicatorDisplayed if the airflow is set toweak and downward during COOLor DRY mode. (Operation variesaccording to model.)The indicator goes off after onehour, at which time the airflow di-rection also changes.

Room Temperature displayShows the room temperature.

Louver displayIndicates the action of the swinglouver. Does not appear if thelouver is stationary.

(Power On indicator)Indicates that the power is on.

Fan Speed indicatorShows the selected fan speed.

Ventilation indicatorAppears when the unit is running inVentilation mode.

Caution Only the Power on indicator lights when the unit is stopped and power supplied to the unit. If you press a button for a feature that is not installed at the indoor unit, the remote controller will display the “Not Available”

message.If you are using the remote controller to drive multiple indoor units, this message will appear only if he feature is not present at the parent unit.

When power is turned ON for the first time, it is normal that “PLEASE WAIT” is displayed on the room temperature indication(For max. 2minutes). Please wait until this “PLEASE WAIT” indication disappear then start the operation.

10

4 SPECIFICATIONS

Model name

Cooling

1.00 2.0

Heating

1.002.0

HWD

HiLo

kWA

CMML/s

CMML/sPa

mmAq

dB(A)dB(A)

mmmmmmkglbs

PEA-RP200GA PEA-RP250GA

3PH 4W 50Hz 380-415V

Galvanized steel Cross fin coil

Centrifugal (direct) o2 0.77 65

1083 52 867 150 15

Remote control & built in 51 48 R1 400 1400 634 70 154

Cooling

1.18 2.3

Heating

1.182.3

3PH 4W 50Hz 380-415V



1333 64

1067 150 15

Remote control & built in 52 49 R1 400 1600 634 77 169

Power supply (phase, cycle,voltage)InputRunning current

External finish Heat exchanger

Operation control & Thermostat

Sound level

Drain connection

Dimensions

Weight

Mode

Fan (drive) o No.Fan motor output

Airflow

External static pressure

Hi

Lo

Model name

Cooling

1.553.8

Heating

1.553.8

HWD

kWA

CMML/sPa

mmAq

dB(A)

mmmmmmkglbs

PEA-RP400GA PEA-RP500GA

3PH 4W 50Hz 380-415V



2,000 150 15

Remote control & built in 52 R1 595 1947 764 130 286

Cooling

2.845.4

Heating

2.845.4

3PH 4W 50Hz 380-415V



2,667 150 15

Remote control & built in 53 R1 595 1947 764 133 293

Power supply (phase, cycle,voltage)InputRunning current

External finish Heat exchanger

Operation control & ThermostatSound levelDrain connection

Dimensions

Weight

Mode

Fan (drive) o No.Fan motor output

Airflow

External static pressure

Fan

Fan

11

DATA5

5-1. Sound DataIndoor units

Indoor unit

Position measurement

Measurement point

Inlet

Outlet

1.5m

2m1m

PEA-RP200,250: Upper High/Lower Low

SPLdB(A) 63Hz 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz

51 55 54 51 49 47 43 33 27

48 50 50 47 46 44 40 29 21

52 56 55 52 50 48 44 34 28

49 51 51 48 47 45 41 30 22

53 55 54 51 50 48 44 40 31

OCTAVE BAND FREQ.HzModel

52 53 51 52 50 46 44 39 30

PEA-RP200GA

PEA-RP250GA

PEA-RP500GA

PEA-RP400GA

12

5-2. Fan Performance CurveIndoor units

PEA-RP200GAFan Performance Curve 50Hz




70.0 80.0 100.0 110.0 120.0 130.090.0

(Pa)

(Pa) (Pa)

Ext

erna

l sta

tic p

ress

ure

Air flow

(CMM)0

50

100

150

200

300

250

110.0100.0 120.0 130.0 140.0 150.0 160.0 170.0

(Pa)

Ext

erna

l sta

tic p

ress

ure

Air flow

(CMM)0

50

100

150

200

350

300

250

Hi

Lo

45.0 50.0 55.0 60.0 65.0 70.0

Hi

Lo

0

50

100

150

200

250

300

0

50

100

150

200

250

60.0 65.0 70.0 75.0 80.0 85.0 90.0

Ext

erna

l sta

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Air flow Air flow(CMM) (CMM)

Ext

erna

l sta

tic p

ress

ure

13

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7 WIRING DIAGRAM

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18

PEA-RP200GA PEA-RP250GAPEA-RP400GA PEA-RP500GA

Unit : mm

Pipe temperaturethermistor/liquid(TH2)

Distributor

Condenser/evaporatortemperature thermistor(TH5)

Room temperaturethermistor (TH1)

Refrigerant flow in cooling

Refrigerant flow in heating

Strainer

Strainer

Heat exchanger

Refrigerant GAS pipe connectionBrazing

Refrigerant LIQUID pipe connectionBrazing

8 REFRIGERANT SYSTEM DIAGRAM

19

9 TROUBLESHOOTING

<Error code display by self-diagnosis and actions to be taken for service (summary)>Present and past error codes are logged and displayed on the wired remote controller or controller board of outdoor unit.Actions to be taken for service and the inferior phenomenon reoccurrence at field are summarized in the table below. Checkthe contents below before investigating details.

9-1. TROUBLESHOOTING

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

The inferior phenomenon isreoccurring.

Displayed

Not displayed

Judge what is wrong and take a corrective action according to “SELF-DIAGNOSIS ACTION TABLE” (9-2).

Identify the cause of the inferior phenomenon and take a corrective action according to “TROUBLESHOOTING BY INFERIOR PHENOMENA ” (9-3).

The inferior phenomenon 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 and etc. Re-check the symptom, and check the installation environment, refrigerant amount, weather when the inferior phenomenon occurred, and wiring related. 2Reset error code logs and restart the unit after finishing service.3There is no abnormality in electrical components, controller boards, and remote controller.

1Recheck the abnormal symptom.2Identify the cause of the inferior phenomenon and take a corrective action according to “TROUBLESHOOTING BY INFERIOR PHENOMENA ” (9-3).3Continue to operate unit for the time being if the cause is not ascertained.4There is no abnormality in electrical components, controller boards, remote controller etc.

20

9-2. SELF-DIAGNOSIS ACTION TABLENote: Refer to the manual of outdoor unit for the details of display

such as F, U, and other E.

Error Code Meaning of error code and detection method Cause Countermeasure

P1

Abnormality of room temperature thermistor (TH1)1 The unit is in three-minute resume

prevention mode if short/open of thermistor is detected. Abnormal if theunit does not reset normally after threeminutes. (The unit returns to normaloperation, if it has normally reset.)

2 Constantly detected during cooling, drying, and heating operation.Short: 90: or moreOpen: -40: or less

1 Defective thermistor characteristics.

2 Contact failure of connector(CN20) on the indoor controllerboard. (Insert failure)

3 Breaking of wire or contact failure of thermistor wiring.

4 Defective indoor controllerboard.

1~3 Check resistance value of thermistor.0: ······15.0k"10: ····9.6k"20: ····6.3k"30: ····4.3k"40: ····3.0k"If you put force on (draw or bend) the lead wirewith measuring resistance value of thermistorbreaking of wire or contact failure can bedetected.2 Check contact failure of connector (CN20) on

the indoor controller board. Refer to 9-6.Turn the power on again and check restartafter inserting connector again.

4 Check room temperature display on remotecontroller.Replace indoor controller board if there isabnormal difference with actual room temperature.

Turn the power off, and on again to operate after check.

P2

Abnormality of pipe temperature thermistor/Liquid (TH2)1 The unit is in three-minute resume

prevention mode if short/open of thermistor is detected. Abnormal if theunit does not reset normally after threeminutes. (The unit returns to normaloperation, if it has normally reset.)

2 Constantly detected during cooling, drying, and heating (except defrosting)operation.Short: 90: or moreOpen: -40: or less

1 Defective thermistor characteristics.



4 Defective refrigerant circuit iscausing thermistor temperatureof 90: or more or -40: orless.

5 Defective indoor controller board.

1~3 Check resistance value of thermistor.For characteristics, refer to (P1) above.2 Check contact failure of connector (CN21) on

the indoor controller board. Refer to 9-6. Turnthe power on and check restart after insert-ing connector again.

4 Check pipe <liquid> temperature with remotecontroller in test run mode. If pipe <liquid>temperature is exclusively low (in coolingmode) or high (in heating mode), refrigerantcircuit may have defective.

5 Check pipe <liquid> temperature with remotecontroller in test run mode. If there is exclusivedifference with actual pipe <liquid> temperature,replace indoor controller board.


P4

Abnormality of drain sensor (DS)1 Suspensive abnormality, if short/open of

thermistor is detected for 30 secondscontinuously.Turn off compressor and indoor fan.

2 Short/open is detected for 30 secondscontinuously during suspensive abnormality.(The unit returns to normal operation, if it has normally reset.)

3 Detect the following condition.• During cooling and drying operation.• In case that pipe <liquid> temperature

- room temperature <-10deg(Except defrosting)

• When pipe <liquid> temperature orroom temperature is short/open temperature.

• During drain pomp operation.

1 Defective thermistor characteristics

2 Contact failure of connector(CN31) on the indoor controllerboard. (Insert failure).

3 Breaking of wire or contact failure of drain sensor wiring.


1~3 Check resistance value of thermistor.0: ······6.0k"10: ····3.9k"20: ····2.6k"30: ····1.8k"40: ····1.3k"2 Check contact failure of connector (CN31) on

the indoor controller board. Refer to 9-6. Turnthe power on again and check restart afterinserting connector again.

4 Replace indoor controller board if drain pump operates with the line of drain sensorconnector CN31-1 and 2 is short-circuited,and abnormality reappears.


P5

Malfunction of drain pump (DP)1 Suspensive abnormality, if thermistor

of drain sensor is let heat itself and temperature rises slightly. Turn off compressor and indoor fan.

2 Drain pomp is abnormal if the conditionabove is detected during suspensiveabnormality.

3 Constantly detected during drain pompoperation.

1 Malfunction of drain pump2 Defective drain

Clogged drain pumpClogged drain pipe

3 Attached drop of water at thedrain sensor• Drops of drain trickles from

lead wire.• Clogged filter is causing

wave of drain.4 Defective indoor controller board.

1 Check if drain-up machine works.2 Check drain function.3 Check the setting of lead wire of drain sensor

and check clogs of the filter.4 Replace indoor controller board if drain

pump operates with the line of drain sensorconnector CN31-1 and 2 is short-circuitedand abnormality reappears.Refer to 9-6.


21


P6

Freezing/overheating protection isworking1 Freezing protection (Cooling mode)

The unit is in six-minute resume preventionmode if pipe <liquid or condenser/evap-orator> temperature stays under -15: for three minutes, three minutesafter the compressor started. Abnormalif it stays under -15: for three minutesagain within 16 minutes after six-minuteresume prevention mode.<Frost prevention mode>If pipe <liquid or condenser-evaporator> temperature is 2: or below when 16 minutes has passed after compressor starts operating, unit will start operating in frost prevention mode which stops compressor operation. After that, when pipe <liquid or condenser/evaporator> temperature stays 10: or more for 3minutes, frost prevention mode will be released and compressor will restart itsoperation.

2 Overheating protection (Heating mode)The units is in six-minute resume prevention mode if pipe <condenser /evaporator> temperature is detected asover 70: after the compressor started.Abnormal if the temperature of over70: is detected again within 10 minutesafter six-minute resume preventionmode.

P8

1 Slight temperature differencebetween indoor room temperature and pipe <liquid or condenser / evaporator> temperature thermistor• Shortage of refrigerant• Disconnected holder of pipe

<liquid or condenser / evaporator> thermistor

• Defective refrigerant circuit2 Converse connection of

extension pipe (on plural unitsconnection)

3 Converse wiring of indoor/outdoor unit connecting wire(on plural units connection)

4 Defective detection of indoorroom temperature and pipe<condenser / evaporator> temperature thermistor

5 Stop valve is not opened completely.

(Cooling or drying mode)1 Clogged filter (reduced airflow)2 Short cycle of air path3 Low-load (low temperature)

operation beyond the tolerancerange

4 Defective indoor fan motor• Fan motor is defective.• Indoor controller board is

defective.

5 Defective outdoor fan control6 Overcharge of refrigerant7 Defective refrigerant circuit

(clogs)

(Heating mode)1 Clogged filter (reduced airflow)2 Short cycle of air path3 Over-load (high temperature)

operation beyond the tolerancerange

4 Defective indoor fan motor• Fan motor is defective.• Indoor controller board is

defective.

5 Defective outdoor fan control6 Overcharge of refrigerant7 Defective refrigerant circuit

(clogs)8 Bypass circuit of outdoor unit

is defective.

(Cooling or drying mode)1 Check clogs of the filter.2 Remove shields.

4 Measure the resistance of fan motor's winding.Measure the output voltage of fan's connector(Relay for FAN) on the indoor controller board.∗The indoor controller board should be

normal when voltage of AC 220~240V is detected while fan motor is connected.Refer to 9-6.

5 Check outdoor fan motor.67 Check operating condition of refrigerant

circuit.

(Heating mode)1 Check clogs of the filter.2 Remove shields.

4 Measure the resistance of fan motor's winding.Measure the output voltage of fan's connector(Relay for FAN) on the indoor controller board.∗The indoor controller board should be

normal when voltage of AC 220~240V is detected while fan motor is connected.Refer to 9-6.

5 Check outdoor fan motor.6~8Check operating condition of refrigerant

circuit.

Abnormality of pipe temperature<Cooling mode>Detected as abnormal when the pipe tem-perature is not in the cooling range 3 min-utes later of compressor start and 6 min-utes later of the liquid or condenser/evapo-rator pipe is out of cooling range.Note 1) It takes at least 9 min. to detect.Note 2) Abnormality P8 is not detected in

drying mode.Cooling range : -3 deg ] (TH-TH1) TH: Lower temperature between: liquid

pipe temperature (TH2) and con-denser/evaporator temperature (TH5)

TH1: Intake temperature

<Heating mode>When 10 seconds have passed after thecompressor starts operation and the hotadjustment mode has finished, the unit isdetected as abnormal whencondenser/evaporator pipe temperature isnot in heating range within 20 minutes.

Note 3) It takes at least 27 minutes todetect abnormality.

Note 4) It excludes the period of defrosting(Detection restarts when defrost-ing mode is over)

Heating range : 3 deg [ (TH5-TH1)

1~4Check pipe <liquid or condenser /evaporator> temperature with room tem-perature display on remote controller and outdoor controller circuit board.Pipe <liquid or condenser / evaporator> temperature display is indicated by setting SW2 of outdoor controller circuit board as follows.

23Check converse connection of extension pipe or converse wiring of indoor/outdoor unit connecting wire.

Conduct temperature check with outdoorcontroller circuit board after connecting ‘A-Control Service Tool(PAC-SK52ST)’.( )

22


P9

Abnormality of pipe temperature ther-mistor / Condenser-Evaporator (TH5)1 The unit is in three-minute resume pro-

tection mode if short/open of thermistoris detected. Abnormal if the unit doesnot get back to normal within three min-utes. (The unit returns to normal opera-tion, if it has normally reset.)

2 Constantly detected during cooling, dry-ing, and heating operation (exceptdefrosting)Short: 90: or moreOpen: -40: or less

1 Defective thermistor characteristics



4 Temperature of thermistor is90: or more or -40: or lesscaused by defective refrigerantcircuit.


1~3 Check resistance value of thermistor.For characteristics, refer to (P1) above.

2 Check contact failure of connector (CN29)on the indoor controller board.Refer to 9-6.Turn the power on and check restart afterinserting connector again.

4 Operate in test run mode and check pipe<condenser / evaporator> temperature withoutdoor controller circuit board. If pipe <condenser / evaporator> temperature isexclusively low (in cooling mode) or high (inheating mode), refrigerant circuit may havedefective.

5 Operate in test run mode and check pipe<condenser / evaporator> temperature withoutdoor control circuit board. If there is exclusive difference with actual pipe <condenser / evaporator> temperaturereplace indoor controller board.There is no abnormality if none of abovecomes within the unit.Turn the power off and on again to operate.

E0orE4

Remote controller transmissionerror(E0)/signal receiving error(E4)1 Abnormal if main or sub remote con-

troller can not receive normally anytransmission from indoor unit of refriger-ant address “0” for three minutes.(Error code : E0)

2 Abnormal if sub remote controller couldnot receive for any signal for two min-utes. (Error code: E0)

1 Abnormal if indoor controller board cannot receive normally any data fromremote controller board or from otherindoor controller board for three minutes.(Error code: E4)

2 Indoor controller board cannot receiveany signal from remote controller for twominutes. (Error code: E4)

1 Check disconnection or looseness of indoorunit or transmission wire of remote controller.

2 Set one of the remote controllers “main”.If there is no problem with the action above.

3 Check wiring of remote controller.• Total wiring length: max.500m

(Do not use cablex 3 or more)• The number of connecting indoor units:

max.16units• The number of connecting remote con-

troller: max.2units

When it is not the above-mentioned problem of1~34 Diagnose remote controllers.

a) When “RC OK” is displayed,Remote controllers have no problem.Put the power off, and on again to check.If abnormality generates again, replaceindoor controller board.

b) When “RC NG” is displayed,Replace remote controller.

c) When “RC E3” is displayed,d) When “ERC 00-06” is displayed,[ c),d)→Noise may be causing abnormality. ]

∗ If the unit is not normal after replacingindoor controller board in group control,indoor controller board of address “0”may be abnormal.

E3orE5

Remote controller transmissionerror(E3)/signal receiving error(E5)1 Abnormal if remote controller could not

find blank of transmission path for sixseconds and could not transmit.(Error code: E3)

2 Remote controller receives transmitteddata at the same time, compares thedata, and when detecting it, judges different data to be abnormal 30 continuous times. (Error code: E3)

1 Abnormal if indoor controller board couldnot find blank of transmission path.(Error code: E5)

2 Indoor controller board receives trans-mitted data at the same time, comparesthe data,and when detecting it, judgesdifferent data to be abnormal 30 continuous times. (Error code: E5)

1 Set a remote controller to main, and theother to sub.

2 Remote controller is connected with only oneindoor unit.

3 The address changes to a separate setting.

4~6 Diagnose remote controller.a) When “RC OK”is displayed, remote con-

trollers have no problem.Put the power off,and on again to check.When becoming abnormal again, replaceindoor controller board.

b)When “RC NG”is displayed, replaceremote controller.

c)When “RC E3”or “ERC 00-66”is displayed,noise may be causing abnormality.

1 Contact failure at transmissionwire of remote controller

2 All remote controllers are setas “sub” remote controller. Inthis case, E0 is displayed onremote controller, and E4 isdisplayed at LED (LED1, LED2)on the outdoor controller circuitboard.

3 Mis-wiring of remote controller.4 Defective transmitting receiving

circuit of remote controller5 Defective transmitting receiving

circuit of indoor controller boardof refrigerant address “0”.

6 Noise has entered into thetransmission wire of remotecontroller.

1 Two remote controller are setas “main.”(In case of 2 remote con-trollers)

2 Remote controller is connectedwith two indoor units or more.

3 Repetition of refrigerantaddress.

4 Defective transmitting receivingcircuit of remote controller.

5 Defective transmitting receivingcircuit of indoor controllerboard.

6 Noise has entered into trans-mission wire of remote con-troller.

In case of checking pipe temperaturewith outdoor controller circuit board,be sure to connect A-control servicetool (PAC-SK52ST).( )

23

PA(2502)(2500)

Forced compressor stop (due to water leakage abnormality)1 When the intake temperature subtracted

with liquid pipe temperature is less than-10:, drain sensor is detected whether it is soaked in the water or not at the interval of 90 seconds. (Drain pump will start operatingwhen the drain sensor is detected to be soaked in the water.)

2 The unit has a water leakage abnormality when the following conditions, a and b, aresatisfied while the above-mentioned detectionis performed.a) The drain sensor is detected to be

soaked in the water 10 times in a row.b) The intake temperature subtracted with

liquid pipe temperature is detected to beless than -10: for a total of 30 minutes.(When the drain sensor is detected to be NOT soaked in the water, the detectionrecord of a and b will be cleared.)

3 The drain sensor detection is performed in operations other than cooling. (When the unit stops operating, during heating or fan operation, when the unit stops because of some abnormality)

*Once the water leakage abnormality is detected, abnormality state will not be released until the main power is reset.

1) Drain pump trouble

2) Drain defective· Drain pump clogging· Drain pipe clogging

3) Open circuit of drain sensor side heater

4) Contact failure of drain sensor connector

5) Dew condensation on drain sensor

· Drain water descends along lead wire.

· Drain water waving due to filterclogging.

6) Extension piping connection difference at twin, triple,quadruple system.

7) Mis-wiring of indoor/ outdoorconnecting at twin, triple,quadruple system.

8) Room temperature thermistor /liquid pipe temperature thermis-tor detection is defective.

Check the drain pump.PerformancePlease confirm whether water can be drained.

Confirm the resistance of the drain sensor sideheater.

Check the connector contact failure.

1 Check the drain sensor leadwire mounted.2 Check the filter clogging

Check the piping connection.

Check the indoor/ outdoor connecting wires.

Check the room temperature display of remotecontroller.Check the indoor liquid pipe temperature dis-play of outdoor controller board.

E6

1 Contact failure, short circuit or,mis-wiring (converse wiring) ofindoor/outdoor unit connectingwire

2 Defective transmitting receivingcircuit of indoor controller board


4 Noise has entered into indoor/outdoor unit connecting wire.

∗ Check LED display on the outdoor control cir-cuit board. (Connect A-control service tool,PAC-SK52ST.)Refer to EA-EC item if LED displays EA-EC.

1 Check disconnection or looseness of indoor/outdoor unit connecting wire of indoor unit oroutdoor unit.Check all the units in case of twin triple indoor unit system.

2~4 Turn the power off, and on again tocheck. If abnormality generates again,replace indoor controller board or outdoor controller circuit board.

∗ Other indoor controller board may have defective in case of twin triple indoor unit system.

E7

Indoor/outdoor unit communicationerror (Transmitting error)Abnormal if “1” receiving is detected 30times continuously though indoor controllerboard has transmitted “0”.


2 Noise has entered into powersupply.

3 Noise has entered into outdoorcontrol wire.

1~3 Turn the power off, and on again tocheck. If abnormality generates again,replace indoor controller board.

Indoor/outdoor unit communicationerror (Signal receiving error)1 Abnormal if indoor controller board

cannot receive any signal normally forsix minutes after putting the power on.

2 Abnormal if indoor controller board cannot receive any signal normally forthree minutes.

3 Consider the unit abnormal under thefollowing condition: When two or moreindoor units are connected to one outdoor unit, indoor controller board cannot receive a signal for three minutesfrom outdoor controller circuit board, asignal which allows outdoor controllercircuit board to transmit signals.


Fb

Abnormality of indoor controller boardAbnormal if data cannot be normally readfrom the nonvolatile memory of the indoorcontroller board.


1 Replace indoor controller board.

E1orE2

Abnormality of remote controller controlboard1 Abnormal if data cannot be normally

read from the nonvolatile memory of theremote controller control board.(Error code: E1)

2 Abnormal if the clock function of remotecontroller cannot be normally operated.(Error code: E2)

1 Defective remote controller. 1 Replace remote controller.

24

(For the separate indoor/outdoor unit power sup-ply system)

1 Power supply of 220~240V AC is not supplied toindoor unit.

2 The connectors of the optional replacement kit arenot used.


4 Defective indoor power board.

9-3. TROUBLESHOOTING BY INFERIOR PHENOMENA Note: Refer to the manual of outdoor unit for the detail of remote

controller.

Phenomena Cause Countermeasure(1)LED2 on indoor controller board

is off.• When LED1 on indoor controller board is also off.1 Power supply of rated voltage is not supplied to out-

door unit.

2 Defective outdoor controller circuit board.

3 Power supply of 220~240V is not supplied to indoorunit.

4 Defective indoor power board.


1 Check the voltage of outdoor power supply terminal block (L, N) or (L3, N).• When AC 220~240V is not detected.

Check the power wiring to outdoor unit and the breaker.

• When AC 220~240V is detected.—Check 2 (below).

2 Check the voltage between outdoor terminal block S1 and S2.• When AC 220~240V is not detected.

Check the fuse on outdoor controllercircuit board.Check the wiring connection.


3 Check the voltage between indoor terminalblock S1 and S2.• When AC 220~240V is not detected.

Check indoor/outdoor unit connecting wire for mis-wiring.


4 Check voltage output from CN2S on indoorpower board (DC13.1V). Refer to 9-6-1.• When no voltage is output.

Check the wiring connection.• When output voltage is between

DC12.5V and DC13.7V.—Check 5 (below).

5 Check the wiring connection betweenindoor controller board and indoor powerboard. Check the fuse on indoor controllerboard. If no problems are found, indoorcontroller board is defective.

• When LED1 on indoor controller board is lit.1 Mis-setting of refrigerant address for outdoor unit

(There is no unit corresponding to refrigerant address “0”.)

1 Reconfirm the setting of refrigerantaddress for outdoor unitSet the refrigerant address to “0”.(For grouping control system under which 2 or more outdoor units are connected, set one of the units to “0”.)Set refrigerant address using SW1 (3-6) on outdoor controller circuit board.

1 Check the voltage of indoor power supplyterminal block (S1,S2).• When AC220~240V is not detected.

Check the power supply wiring.• When AC220~240V is detected.

-Check 2 (below).2 Check that there is no problem in the

method of connecting the connectors.• When there are problems in the method

of connecting the connectors.Connect the connector correctly refer-ring to installation manual of an optionalkit.

• When there is no problem in themethod of connecting the connectors.-Check 3 (below).

3 Check voltage output from CNDK onindoor controller board.• When AC220~240V is not detected.

Check the fuse on indoor controllerboard.Check the wiring connection betweenindoor power supply terminal block andCND on indoor controller board.

• When AC220~240V is detected.-Check 4 (below).

4 Check voltage output from CN2S onindoor power board.• When no voltage output.

Check the wiring connection betweenCNDK on indoor controller board andCNSK on indoor power board.If no problem are found,indoor powerboard is defective.

• When DC12.5~13.7V is detected.Check the wiring connection betweenCN2S on indoor power board andCN2D on indoor power board.If no problem are found,indoor controllerboard is defective.

25

Note: Refer to the manual of outdoor unit for the detail of remote controller.

Phenomena Cause Countermeasure

(2)LED2 on indoor controller board is blinking.

• When LED1 on indoor controller board is also blinking.Connection failure of indoor/outdoor unit connecting wire

• When LED1 is lit.1 Mis-wiring of remote controller wires

Under twin triple indoor unit system, 2 or more indoor units are wired together.

2 Refrigerant address for outdoor unit is wrong or notset.Under grouping control system, there are some units whose refrigerant address is 0.

3 Short-cut of remote controller wires4 Defective remote controller

Check indoor/outdoor unit connecting wirefor connection failure.

1 Check the connection of remote con-troller wires in case of twin triple indoor unit system. When 2 or more indoor unitsare wired in one refrigerant system,

connect remote controller wires to one ofthose units.

2 Check the setting of refrigerant addressin case of grouping control system.If there are some units whose refrigerant addresses are 0 in one group, set one of the units to 0 using SW1 (3-6) on outdoor controller circuit board.

34 Remove remote controller wires and check LED2 on indoor controller board.

• When LED2 is blinking, check theshort-cut of remote controller wires.

• When LED2 is lit, connect remote controller wires again and:if LED2 is blinking, remote controller is defective; if LED2 is lit, connection failure of remote controller terminal block etc. has returned to normal.

9-4. WHEN WIRED REMOTE CONTROLLER OR INDOOR UNIT MICRO COMPUTER TROUBLES1. If there is not any other wrong when trouble occurs, emergency operation starts as the indoor controller board switch (SWE)

is set to ON.During the emergency operation the indoor unit is as follows;(1) Indoor fan high speed operation (2) Drain-up machine operation

2. When emergency operating for COOL or HEAT, setting of the switch (SWE) on the indoor controller board and outdoor unitemergency operation are necessary.

3. Check items and notices as the emergency operation(1) Emergency operation cannot be used as follows;

• When the outdoor unit is something wrong.• When the indoor fan is something wrong.• When drain over flow protected operation is detected during self-diagnosis. (Error code : P5)

(2) Emergency operation will be serial operation by the power supply ON/OFF.ON/OFF or temperature, etc. adjustment is not operated by the remote controller.

(3) Do not operate for a long time as cold air is blown when the outdoor unit starts defrosting operation during heat emer-gency operation.

(4) Cool emergency operation must be within 10 hours. Other wise, heat exchanger of indoor unit may get frosted.(5) After completing the emergency operation, return the switch setting, etc. in former state.(6) Since vane does not work at emergency operation, position the vane slowly by hand.

26

9-5. HOW TO CHECK THE PARTSPEA-RP200GA PEA-RP250GAPEA-RP400GA PEA-RP500GA

Parts name Check points

Disconnect the connector then measure the resistance using a tester.(Surrounding temperature 10:~30:)

(Refer to the thermistor)

Room temperaturethermistor (TH1)

Pipe temperaturethermistor/liquid (TH2)

Condenser/evaporatortemperature thermistor (TH5)

Normal

4.3k"~9.6k"

Abnormal

Open or short

Thermal protector trip temperature135 ±5˚C : open86 ±15˚C : close

•PEA-RP200/250GA

Thermal protector trip temperature150 ±5˚C : open96 ±15˚C : close

•PEA-RP400/500GA

THERMO

W

Z Y

a bU

X

V

THERMO

Normal

20.6Ω

25.6Ω PEA-RP200/250GA

Red-White / White-Blue / Red-Blue




Abnormal

Open or short

Hi

Lo

34.2Ω PEA-RP400GA

25.2Ω PEA-RP500GA

Measure the resistance value across the terminals with a multimeter. (Winding

temperature 20 ˚C)

(LO)

(LO)

(HI)

(HI)

U2

U1

V1

V1

W1

W2

(LO)

(HI)Black marking

Black marking

Black marking

Yellow

Blue

Red

Red

Blue

Yellow

White

White

0

10

20

30

40

50

-20 -10 0 10 20 30 40 50

< Thermistor for lower temperature >

Temperature (:)

Res

ista

nce

(K"

)

<Thermistor Characteristic graph>

•Room temperature thermistor(TH1)•Pipe temperature thermistor/liquid(TH2)•Condenser/Evaporator temperature thermistor(TH5)

Thermistor R0=15k' ± 3%Fixed number of B=3480 ± 2%

Rt=15exp 3480( )

0: 15k'10: 9.6k'20: 6.3k'25: 5.2k'30: 4.3k'40: 3.0k'

Thermistor for lower temperature

1273+t

1273

27

9-6. TEST POINT DIAGRAM9-6-1. Power boardPEA-RP200GA PEA-RP250GAPEA-RP400GA PEA-RP500GA

CNSKConnect to the indoor controller board(CNDK)Between 11 to 33 220-240V AC

CN2SConnect to the indoor controller board (CN2D)Between 11 to 33 12.6-13.7V DC (Pin11 (+))

28

9-6-2. Indoor controller boardPEA-RP200GA PEA-RP250GAPEA-RP400GA PEA-RP500GA

FANFan motor output

CNPDrain-pump output(DP)(220~240V AC)

CNCDew preventionheater (H2)(220~240V AC)

CNDKConnect to the indoorpower board (CNSK)(220~240V AC)

FUSE(6.3A 250V)

CNDPower supply input(220~240V AC)

SWEEmergency operation

SW2Capacity setting

SW1Model setting

CN2LConnector (LOSSNAY)

CN51Centrally control

CN6VVane motor output(MV)

CN90Connect to thewireless remotecontroller board(CNB)

CN31Drain sensor (DS)

CN29Condenser/evaporatortemperature thermistor(TH5)

CN21Pipe temperaturethermistor/Liquid(TH2)

CN20Room temperaturethermistor (TH1)

CN22Remote controllerconnecting wire(10.4~14.6V DC)

LED3Transmission(Indoor/outdoor)

LED2Power supply (R.B)

LED1Power supply (I.B)

CN2DConnector to the indoorpower board (CN2S)(12.5~13.7V DC)

CN3CTransmission(Indoor/outdoor)(0~24V DC)

Non polarity

+ –

+

–

CN41Connector (HA terminal-A)

29

SW1

Setting by the dip switch and jumper wireFunctionsJumper wire

Modelsettings

Capacitysettings

Remarks

SW2

Unit type setting

JP1

Indoor controller board type setting

JP3

There is no jumper (JP1) because these models have the cond./eva. temperature thermistor (TH5).

(Marks in the table below) Jumper wire ( : Short : Open)

Without TH5With TH5

Model JP1

Factory shipmentService parts

Indoor controller board type JP3

PEA-RP200/250 PEA-RP400/500

1

OFFON

5432

1

OFFON

5432

1

OFFON

5432

9-7. FUNCTIONS OF DIP SWITCH AND JUMPER WIREEach function is controlled by the dip switch and the jumper wire on control p.c. board.

30

10 SERVICE DATA (PARTS NAME)

Control box

Drain pan

Drain pipe connection(R1)

Fan motor

Sirocco fan

Suspension bracket Special washer

Liquid pipe thermistor(TH2)

2-phasepipethermistor(TH5)

Strainer

StrainerHeat exchanger

Liquid pipe

Gas pipe

Inlet thermistor(TH1)

Drain pan

PEA-RP200/250GA

31

Drain pan

Drain pipe connection(R1)

Fan motor

Sirocco fan

Suspension bracketControl box

Special washer

Drain pan

Liquid pipe thermistor(TH2-1)

Liquid pipe thermistor(TH2-2)

Strainer

No.2 Strainer

StrainerNo.1 Strainer

2-phase pipethermistor(TH5-1)

Heat exchanger

No.1 Liquid pipe

No.1 Gas pipe

No.2 Liquid pipe

2-phase pipethermistor(TH5-2)

No.2 Gas pipe

No.2Inlet thermistor(TH1-2)

No.1Inlet thermistor(TH1-1)

PEA-RP400/500GA

32

A

Ferrite corePower supply board

Control board

I/D

POWER BOARD

I/D

CONTROLLER BOARD

Lo52F

Hi52F

51FX1

FB

view A

L2N

L3L1

TB2

TB4TB5

12

S2

S1

S3

Relay

SNBboard

Magnetic contactor(Fan motor Lo speed)

Magnetic contactor(Fan motor Hi speed)

Terminal block forremote controller

Terminal block foroutdoor/indoor controlwiring connection

Power supplyterminal block

PEA-RP200/250GA

33

(NO.2)

I/DPOWER BOARD

(NO.1)

I/DPOWER BOARD

A

view A

I/D

CONTROLLER BOARD

(NO.2)

CONTROLLER BOARD

(NO.1)

I/D

FB12 FB22

FB11 FB21

52F

TB2TB4-1 TB5TB4-2X1 X2

51F

Ferrite core Ferrite coreControl board(No.2 unit)

Control board(No.1 unit)

Relay

Power supplyterminal block

Terminal block foroutdoor/indoor controlwiring connection(No.1 unit)

Terminal block foroutdoor/indoor controlwiring connection(No.2 unit)

Terminal block forremote controller

Magneticcontactor



SNB board

PEA-RP400/500GA

New publication, effective Nov 2007.Specifications subject to change without notice.HWE0708B

Printed in Japan

pea-rp250ga pea-rp400ga pea-rp500ga

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