technical service manual dc inverter split system air conditioner

IMPORTANTThese air conditioners employ newrefrigerant R410A.Pay special attention whenservicing the unit.

TECHNICAL & SERVICE MANUALKHS3082 + CH3082KHS3682 + CH3682

DC INVERTER SPLIT SYSTEM AIR CONDITIONERDestination: North America

Outdoor Model No.CH3082CH3682

Product Code No.1 852 354 321 852 354 33

Indoor Unit Outdoor Unit

KHS3082KHS3682

CH3082CH3682

Indoor Model No.KHS3082KHS3682

Product Code No.1 852 354 281 852 354 29

REFERENCE NO. SM700858

FILE NO.

Before doing repair work, please read the " SAFETY PRECAUTIONS" carefully and fully understand them. The precautionary items here are divided into " Warning" and " Caution" items.

Items in particular which may cause death or serious injury to the service personnel if the work is not performed correctly, are included in the " Warning" table.However, even precautionary items identified as " Caution" also have the potential for serious consequencesif not performed correctly.Important safety precautions are described for all items in both categories. Be sure to carefully follow all of them.

Symbol Indication: This symbol indicates items to which we need to pay attention.

In this triangle, a definite precautionary item is described.: This symbol indicates the item to be prohibited.

In or close to this circle, a prohibited item is described.: This symbol indicates the items requiring special attention or instruction.

In or close to this circle, a prohibited item is described.

After doing repair work, perform a test run to confirm that there are no abnormalities.At the same time, explain the precautions in use to the user.

SAFETY PRECAUTIONS

WarningBefore performing an overhaul, disconnect the power plug or power cable from the unit.Performing the work with the power supplied to the unit, may cause an electric shock.

When repair work or circuit inspection that requires power supply for the air conditioner, is to be performed, do not touch the charging section. Doing so may cause an electric shock.

For the step-up capacitor attached to the electric section, perform the repair work after sufficiently discharging it.Insufficient capacitor discharge may cause an electric shock.

Do not perform repair work on the electric sections with wet hands. Doing so may cause an electric shock.

Do not start or stop the air conditioner by means of connecting or disconnecting the power plug. Doing so may cause an electric shock or fire.

When conducting repair work only use components included in the parts list for the corresponding unit and perform the work with the appropriate tools.Incorrect or poor repair work may cause an electric shock or fire.

Never modify the unit. Doing so may cause an electric shock or fire.

Perform all electric work according to local applicable regulations related to electrical equipment or interior wiring regulation and make sure to use the exclusive circuit.Insufficient capacity to the electric circuit or defective arrangement results may cause an electric shock or fire.

Make sure to replace any power cable or lead wire showing any signs of scratch or deterioration. Failure to do so may cause an electric shock, overheating or fire.

Make sure that there is no dust on or slack in the power plug and insert fully into the socket. Dust or incomplete connections may cause an electric shock or fire.

Do not damage or process the power cord, as it may cause an electric shock or fire.

For the wiring between the indoor unit and outdoor unit, securely fix the specified cable onto the terminal plate.Poorly fixed wiring may cause a heat or fire.

After connecting the wiring between the indoor unit and outdoor unit, attach the terminal cover securely. Incomplete attachment of the terminal cover may cause overheating or fire.

Prohibit

Prohibit

Prohibit

Prohibit

Prohibit

2

Warning

If refrigerant gas blows off during the work, do not touch the refrigerant gas as it may cause frostbite.

If refrigerant gas leaks during the work, ventilate the room.If refrigerant gas catches fire, harmful gas may be generated.

Do not mix any gas other than the specified refrigerant gas in the refrigerating cycle. If air or other contaminants mix with the gas, pressure will become extremely high in the refrigerating cycle, which may cause a unit breakdown."When the welded section of the compressor intake or discharge pipe is to be disconnected, perform it in a well-ventilated place after sufficiently recovering the refrigerant gas.Any residue gas may jet out refrigerant or refrigerating machine oil, which may cause an injury.

When the work is to be performed in a high place (About 2 meters or more), make sure to wear a safety helmet, gloves and safety belt. Insufficient safety gear may cause a serious injury in case of a fall.

When the unit is to be relocated, confirm that the new installation location has sufficient strength for the weight of the unit.Insufficient strength of the installation location and incomplete installation work may cause an injury due to the unit falling.

When the remote controller batteries are replaced, dispose of the old batteries out of the reach of children. If a child swallows a battery, make sure that the child gets immediate medical attention.

Caution

Do not wash the air conditioner with water, as this may cause an electric shock or fire.

For the repair work in places with high humidity or moisture, make sure to ground the unit. Failure to do so may cause an electric shock.

Confirm that the component attachment position, wiring condition, soldering condition and connector connection are normal. If not, it may cause overheating or fire.

Confirm that the temperature around the compressor is not too high, and then perform the repair work. Failure to do so may cause a burn.

Perform welding work in a place with good ventilation. If the work is performed in a poorly ventilated area, it might cause a lack of oxygen.

If the installation plate or attachment frame has deteriorated due to corrosion, etc., replace it.Failure to do so may cause an injury due to the unit falling.

When the cleaning is to be performed, make sure to turn off the power and pull out the plug. Touching the fan that is rotating at high speed may result in an injury.

When the indoor unit is to be removed, do not place it on an incline. Doing so may cause wet furniture because water left inside may trickle down.

Do not hold the sharp end of the unit or the aluminum fins, as it may cause an injury to your hand or finger.

After repairs, make sure to measure the insulation resistance and confirm that the value is 1 Mohm or more. Any insulation error may cause an electric shock.

After repairs, make sure to check the drainage of the indoor unit. Inappropriate drainage may cause wet furniture and floors due to water leakage.

Prohibit

Prohibit

Prohibit

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Prohibit

3

Table of Contents

SAFETY PRECAUTIONS

TABLE OF CONTENTS

1. OPERATING RANGE

2. SPECIFICATIONS2-1. Unit Specifications 2-2. Major Component Specifications 2-3. Other Component Specifications

3. DIMENSIONAL DATA

4. REFRIGERANT FLOW DIAGRAM4-1. Refrigerant Flow Diagram

5. PERFORMANCE DATA5-1. Temperature Charts5-2. Cooling Capacity5-3. Heating Capacity5-4. Air Throw Distance Charts

6. ELECTRICAL DATA6-1. Electrical Characteristics6-2. Electric Wiring Diagrams

7. FUNCTIONS7-1. Operation Functions7-2. Protective Functions

8. TROUBLESHOOTING8-1. Precautions before Performing Inspection or Repair8-2. Method of Self-Diagnostics8-3. Checking the Indoor and Outdoor Units8-4. Trouble Diagnosis of Fan Motor8-5. Noise Malfunction and Electromagnetic Interference

2

4

6

71115

16

18

19232729

3133

3539

4141444850

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Page

4

9. CHECKING ELECTRICAL COMPONENTS9-1. Measurement of Insulation Resistance9-2. Checking Continuity of Fuse on PCB Ass'y

10. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT10-1. Characteristics of New Refrigerant R410A10-2. Checklist before Servicing10-3. Tools Specifically for R410A10-4. Tubing Installation Procedures10-5. In Case of Compressor Malfunction10-6. In Case Refrigerant is Leaking10-7. Charging Additional Refrigerant10-8. Retro-Fitting Existing Systems

APPENDIX A INSTRUCTION MANUAL

APPENDIX B INSTALLAION INSTRUCTIONS

5152

5354555556585959

A-1

A-2

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Page

5

95 F D.B. / 71 F W.B.67 F D.B. / 57 F W.B.80 F D.B. / 67 F W.B. _ D.B. / _ W.B.

1. OPERATING RANGE

MaximumMinimumMaximumMinimum

115 F D.B.0 F D.B.75 F D.B. / 65 F W.B._ D.B. / 0 F W.B.

Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.

Cooling

Heating

6

2. SPECIFICATIONS2-1. Unit SpecificationsIndoor Unit KHS3082Outdoor Unit CH3082 < 230V >

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:Cooling: Indoor air temperature 80F D.B. / 67F W.B.

Outdoor air temperature 95F D.B. / 75F W.B.Heating: Indoor air temperature 70F D.B.

Outdoor air temperature 47F D.B. / 43F W.B.

Vertical

dB-AdB-A

Indoor : Hi/Me/Lo/Qt*Outdoor : Hi

Air FilterCompressorRefrigerant / Amount charged at shipment Ibs (g)Refrigerant Control

( 14,000 to 33,000 )( 4.1 to 9.7 )

16.53,290

( 5.0 to 16.5 )( 1,000 to 3,290 )

15.33,070

( 4.5 to 15.3 )( 900 to 3,070 )

30,6009.0

33,0009.7

( 10,900 to 30,600 )( 3.2 to 9.0 )

Shipping Volume

Cooling Heating

18,60012,000

NetShipping

Package Dimensions

Weight

Height Width Depth

Height Width DepthIbs (kg)Ibs (kg)

cu.ft (m3)

(mm)inch

(mm)

230V Single-Phase 60Hz

inch

--

187 to 253

Dim

ensio

ns &

Weig

ht

(*Qt = Quiet mode)Refrigerant Tubing Connections

Unit Dimensions

Operation Sound

Elec

trica

l Rat

ing

Sensible CapacityLatent Capacity

WPower Input

VA

Available Voltage RangeRunning Amperes

Refrigerant Tube Kit / Accessories

Narrow tubeWide tube

Refrigerant inch (mm)Tube Diameter inch (mm)

32.039.74.59

(14.5)(18.0)(0.13)

185.2207.215.88

(84.0)(94.0)(0.45)

42-3/8 40 16-3/8(1,076 1,016 416)

(300 1,065 230) (910 940 340)12-7/32 44-7/8 14-31/32

(310 1,140 380)

Outdoor UnitIndoor Unit11-13/16 41-15/16 9-1/16 35-13/16 37-1/32 13-3/8

3/8 (9.52)5/8 (15.88)

ft (m)Max. allowable tubing length at shipmentFlare Type164 (50)

49 / 44 / 39 / 3249 / 44 / 39 / 325555

R410A / 6.5 (2,950)Electric Expansion Valve

Washable, Anti-MoldDC Twin Rotary (Inverter)

ManualAuto

TimerIndoor / OutdoorFan Speeds

24-Hour ON or OFF Timer, 1-Hour OFF TimerAuto and 3 steps / Auto (Hi, Me, Lo)

Airflow Direction (Indoor) Horizontal

Controls / Temperature ControlControl Unit

Microprocessor / I.C. ThermisterWireless Remote Control Unit

Feat

ures

HSPFCompressor Locked Rotor Amperes

BTU/Wh

Optional / Air Clean Filter

BTU/h

Perfo

rman

ce

- 9.0

%Power Factor 87 87

A 31.0

Voltage Rating

BTU/h

kWTotal Capacity

BTU/h

SEER BTU/Wh 16.0 -

630 (1,070) 671 (1,140)Air Circulation (High) ft3/min (m3/h)9.57 -Moisture Removal (High) Pints/h

COP W/W - 3.15EER BTU/h/W 9.30 -

Fuse or Circuit Breaker Capacity A 35

7

Indoor Unit KHS3082Outdoor Unit CH3082 < 208V >





Vertical

dB-AdB-A



Shipping Volume

NetShipping

Package Dimensions

Weight

Height Width Depth


cu.ft (m3)

(mm)inch

(mm)


inch

Dim

ensio

ns &

Weig

ht


Unit Dimensions

Operation Sound

Elec

trica

l Rat

ing


WPower Input

VA





ft (m)Max. allowable tubing length at shipment




Feat

ures


BTU/Wh

BTU/h

Perfo

rman

ce

%Power Factor

A

Voltage Rating

BTU/h

kWTotal Capacity

BTU/h

SEER BTU/Wh

Air Circulation (High) ft3/min (m3/h)Moisture Removal (High) Pints/h

COP W/WEER BTU/h/W

Fuse or Circuit Breaker Capacity A

( 14,000 to 33,000 )( 4.1 to 9.7 )

18.03,290

( 5.0 to 18.0 )( 1,000 to 3,290 )

16.83,070

( 4.5 to 16.8 )( 900 to 3,070 )

30,6009.0

33,0009.7

( 10,900 to 30,600 )( 3.2 to 9.0 )

Cooling Heating

18,60012,000

--

187 to 253

32.039.74.59

(14.5)(18.0)(0.13)

185.2207.215.88

(84.0)(94.0)(0.45)

(300 1,065 230) (910 940 340)


3/8 (9.52)5/8 (15.88)

Flare Type164 (50)

49 / 44 / 39 / 3249 / 44 / 39 / 325555



ManualAuto




- 9.0

88 88

31.0

16.0 -

630 (1,070) 671 (1,140)9.57 -

- 3.159.30 -

35

42-3/8 40 16-3/8(1,076 1,016 416)

12-7/32 44-7/8 14-31/32(310 1,140 380)

8






Vertical

dB-AdB-A



Shipping Volume

NetShipping

Package Dimensions

Weight

Height Width Depth


cu.ft (m3)

(mm)inch

(mm)


inch

Dim

ensio

ns &

Weig

ht


Unit Dimensions

Operation Sound

Elec

trica

l Rat

ing


WPower Input

VA









Feat

ures


BTU/Wh

BTU/h

Perfo

rman

ce

%Power Factor

A

Voltage Rating

BTU/h

kWTotal Capacity

BTU/h

SEER BTU/Wh


COP W/WEER BTU/h/W


( 14,000 to 36,000 )( 4.1 to 10.5 )

20.04,000

( 5.0 to 20.0 )( 1,000 to 4,000 )

18.23,650

( 4.5 to 18.2 )( 900 to 3,650 )

34,00010.0

36,00010.5

( 10,900 to 34,000 )( 3.2 to 10.0 )

Cooling Heating

20,70013,300

--

187 to 253

32.039.74.59

(14.5)(18.0)(0.13)

185.2207.215.88

(84.0)(94.0)(0.45)

(300 1,065 230) (910 940 340)


3/8 (9.52)5/8 (15.88)

Flare Type164 (50)

49 / 44 / 39 / 3249 / 44 / 39 / 325655



ManualAuto




- 9.0

87 87

31.0

16.0 -

630 (1,070) 671 (1,140)10.64 -

- 2.898.50 -

45

42-3/8 40 16-3/8(1,076 1,016 416)

12-7/32 44-7/8 14-31/32(310 1,140 380)

9






Vertical

dB-AdB-A



Shipping Volume

Cooling Heating

NetShipping

Package Dimensions

Weight

Height Width Depth


cu.ft (m3)

(mm)inch

(mm)


inch

Dim

ensio

ns &

Weig

ht


Unit Dimensions

Operation Sound

Elec

trica

l Rat

ing


WPower Input

VA









Feat

ures


BTU/Wh

BTU/h

Perfo

rman

ce

%Power Factor

A

Voltage Rating

BTU/h

kWTotal Capacity

BTU/h

SEER BTU/Wh


COP W/WEER BTU/h/W


( 14,000 to 36,000 )( 4.1 to 10.5 )

21.94,000

( 5.0 to 21.9 )( 1,000 to 4,000 )

19.93,650

( 4.5 to 19.9 )( 900 to 3,650 )

34,00010.0

36,00010.5

( 10,900 to 34,000 )( 3.2 to 10.0 )

20,70013,300

--

187 to 253

32.039.74.59

(14.5)(18.0)(0.13)

185.2207.215.88

(84.0)(94.0)(0.45)

(300 1,065 230) (910 940 340)


3/8 (9.52)5/8 (15.88)

Flare Type164 (50)

49 / 44 / 39 / 3249 / 44 / 39 / 325655



ManualAuto




- 9.0

88 88

31.0

16.0 -

630 (1,070) 671 (1,140)10.64 -

- 2.898.50 -

45

42-3/8 40 16-3/8(1,076 1,016 416)

12-7/32 44-7/8 14-31/32(310 1,140 380)

10

Indoor Unit KHS3082

24BYJ48-1256

Flap MotorType Stepping Motor

Rating Model

Coil Resistance Ohm(Ambient Temp. 77 F (25 C))

Each Pair of Terminal : 200 +/- 7%DC 12V

Aluminum Plate Fin / Copper Tube1 and 2

19.54.55 (0.423) Face Area

CoilRowsFins Per inch

Heat Exchanger Coil

ft2 (m2)DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Yes

Control PCB

Control Circuit Fuse ControlsPart No.

Microprocessor250V 3A

CB-KHS3082

1 ... D3-15/16 / L32-1 (D100/L838)

RCS-8HVPULS4U

Cross-Flow

DC MotorSIC-39CVL-D847-10 ... 1

8

-47

1,370 / 1,450

Internal ControllerYes

--

Fan

Remote Control Unit

Q'ty ... Dia. and LengthType

inch (mm)

Fan Motor

Nominal OutputCoil Resistance

Rough Measure RPM (Cool / Heat)

TypeModel ... Q'tyNo. of Poles

Safety DeviceTypeOver-Current ProtectionOver-Heat Protection

(Ambient Temp. 68 F (20 C))

Run Capacitor Micro FVAC

WOhm

2-2. Major Component Specifications2-2-1. Indoor Unit

11

Indoor Unit KHS3682

Flap MotorType

Rating Model

Coil Resistance Ohm(Ambient Temp. 77 F (25 C))

Face Area

CoilRowsFins Per inch

Heat Exchanger Coil

ft2 (m2)DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Control PCB

Control Circuit Fuse ControlsPart No.

Microprocessor250V 3A

CB-KHS3682

Fan

Remote Control Unit

Q'ty ... Dia. and LengthType

inch (mm)

Fan Motor




Safety DeviceType


Run Capacitor Micro FVAC

WOhm

Over-Current ProtectionOver-Heat Protection

24BYJ48-1256Stepping Motor

Each Pair of Terminal : 200 +/- 7%DC 12V

Aluminum Plate Fin / Copper Tube1 and 2

19.54.55 (0.423)

1 ... D3-15/16 / L32-1 (D100/L838)

RCS-8HVPULS4U

Cross-Flow

DC MotorSIC-39CVL-D847-10 ... 1

8

-47

1,370 / 1,450

Internal ControllerYesYes

--

12

Outdoor Unit CH3082

2-2-2. Outdoor Unit

P.C.Board

Circuit Fuse ControlsPart No.

-250V 25A

POW-CH3082-B1Noise Filer P.C.B

Microprocessor400V 3.5A

CR-CH3082-FControl P.C.B

--

HIC-CH3072R-C1H.I.C.Board


Pints (cc)

-

Micro FVAC

External Finish Acrylic baked-on enamel finish

FV68S ... 2.98 (1,400)

--

Internal Controller

Yes

Aluminum Plate Fin / Copper Tube2

21.2 Face Area ft2 (m2) 8.05 (0.748)

CoilRowsFins per inch

Heat Exchanger Coil

SIC-71FW-D8120-4A ... 1

Compressor Oil ... Amount

8

142750 / 750

Ohm

DC Motor

TypeCompressor Model / Nominal Output

Compressor

Coil Resistance (Ambient Temp. 77 F (25 C)) Ohm

DC Twin Rotary (Hermetic)C-9RVN273H0H / 2,250W

T - R :T - S :R - S :

0.1690.1690.169

CT (Peak current cut-off control)Compressor Discharge Temp. ControlOperation cut-off control in abnormal ambient Temp.

Safety Device

Micro FVAC

Run Capacitor

Crankcase Heater

YesYesYes

Overload Relay CS-7L110ModelOperation Temp. Open : 230 F (110 C), Close : 203 F (95 C)

--

230V 30W

1 ... D19-9/32 (D490)

FanPropeller

Q'ty ... Dia. inch (mm)Type

Type

Over- Heat Protection


Fan Motor


Safety Device


Run Capacitor


W

YesOver- Current Protection

13

Outdoor Unit CH3682

P.C.Board

Circuit Fuse ControlsPart No.

-250V 25A

POW-CH3082-B1Noise Filer P.C.B

Microprocessor400V 3.5A

CR-CH3682-FControl P.C.B

--

HIC-CH3072R-C1H.I.C.Board


Pints (cc)

-

Micro FVAC

External Finish Acrylic baked-on enamel finish

FV68S ... 2.98 (1,400)

--

Internal Controller

Yes

Aluminum Plate Fin / Copper Tube2

21.2 Face Area ft2 (m2) 8.05 (0.748)

CoilRowsFins per inch

Heat Exchanger Coil

SIC-71FW-D8120-4A ... 1

Compressor Oil ... Amount

8

142750 / 750

Ohm

DC Motor

TypeCompressor Model / Nominal Output

Compressor

Coil Resistance (Ambient Temp. 77 F (25 C)) Ohm

DC Twin Rotary (Hermetic)C-9RVN273H0H / 2,500W

T - R :T - S :R - S :

0.1690.1690.169

CT (Peak current cut-off control)Compressor Discharge Temp. ControlOperation cut-off control in abnormal ambient Temp.

Safety Device

Micro FVAC

Run Capacitor

Crankcase Heater

YesYesYes

Overload Relay CS-7L110ModelOperation Temp. Open : 230 F (110 C), Close : 203 F (95 C)

--

230V 30W

1 ... D19-9/32 (D490)

FanPropeller

Q'ty ... Dia. inch (mm)Type

Type

Over- Heat Protection


Fan Motor


Safety Device


Run Capacitor


W

YesOver- Current Protection

14

2-3. Other Component Specifications Indoor Unit KHS3082 KHS3682Outdoor Unit CH3082 CH3682

0 32 50 68 86 104 122 140 158 176 194(0) (10) (20) (30) (40) (50) (60) (70) (80) (90)

406080

100120140160180200

20

50

10

23456789

10

59 68 77 86 95 104(10) (15) (20) (25) (30) (35) (40)

Indoor air temp sensor (Model:KTEC-35-S121-1)

Indoor heat exchanger sensor (Model:PTM-D51H-S6-1) Compressor temp sensor (Model:TKS335B)

Resis

tanc

e (k o

hm)

Resis

tanc

e (k o

hm)

Temperature F (C)

Outdoor air temp sensor (Model:TKS295B) Outdoor heat exchanger sensor (Model:TKS334B) Heat sink temp sensor (HIC Board) (Model:TKS316B)

40

35

30

25

20

15

10

5

0 -4 5 14 23 32 41 50 59 68(-20)(-15)(-10) (-5) (0) (5) (10) (15) (20)

Resis

tanc

e (k o

hm)

Temperature F (C)

Temperature F (C)

15

3. DIMENSIONAL DATAIndoor Unit KHS3082 KHS3682

Unit: inch(mm)(852-0-0010-19600-0)

41-1

5/16

(106

5)

9-1/

16 (2

30)

(3/3

2)7-

25/3

2 Wide

tube

dia.

5/8

" (15

.88)

Narro

w tu

be d

ia. 3

/8" (

9.52

)Dr

ain h

ose

dia. 2

3/32

" (18

)

1-27

/32

1-3/

322-3/

3225

/32

5-1/

2 6-7

/32

16-11

/32

17-5

/16

19-9

/16

16-11

/32

17-2

1/32 22-3

/85-3

/16

3-3/

43-

3/4

7-7/

815

-1/8

17-2

3/32

2-11/16

11-13/16

1-7/8

dia. 3-

5/32

23/32

1-15/32

1-7/8

9-3/

325-27

/32

2-3/

8

5/162-3/4

4-9/16

4-9/16

11-13/16 (300)

7-23/32

2-3/4

5-9/16

1-9/32

7/16

2-5/

8

2-3/8

3-3/

82-

5/8

dia. 3

-5/32

16

Outdoor Unit CH3082 CH3682

Unit:

inch(

mm

)(8

52-0

-001

0-19

400-

1)

6-11

/625

-31/

324-

11/3

22-

15/1

62-

3/8

2-ID

:1-1

/4 h

oles (

holes

for d

rain)

Of th

e 4-

ID:1

-1/4

hole

s, us

e 1

of 2

hole

ssp

ecifie

d fo

r dra

in us

e to

insta

ll the

por

t.Us

e ru

bber

plug

s to

seal

the

rem

aining

3 h

oles.

1/2 1/2

2-15

/16

8-5/

84-

1/8

37-1

/32

(940

)Re

frige

rant

tubin

g joi

nt (L

iquid

tube

)Fl

are

conn

ectio

n dia

.3/8

" (9.

52)

Refri

gera

nt tu

bing

joint

(Gas

tube

)Fl

are

conn

ectio

n dia

.5/8

" (15

.88)

2-3/

83/4

1-15/16

1-27/32

1-3/16 4-11/32

13-9/32

14-11/32

4-11/32

2-25/32

1-15/16

6-23/3219/32

31/32

4-3/4

1-3/

167/

162-

5/32

21/32

1-27/32

1-3/16

2-3/

8

Tubin

g ou

tlet

3/4

3-3/

8 2-17

/32

Wirin

g ou

tlet

(kno

ck-o

ut h

oles

dia.1

-3/8

, 1-3

/32,

7/8

, 1/2

)

Wirin

g ou

tlet

(kno

ck-o

ut h

oles

dia.1

-3/8

, 1-3

/32,

7/8

, 1/2

)

Tubin

g ou

tlet

Tubin

g ou

tlet

2-25/32

2-5/

322-

17/3

2

35-13/16 (910)

23/32

1-1/32

13/32

13-3/8 (340)

14-31/32

16-5/32

11-13/32

AIR

INTA

KE

AIR

INTA

KE

AIR

DISC

HARG

E

AIR

DISC

HARG

E

AIR

INTA

KE

17

Com

pres

sor

4-wayvalve

MainAccumulator

High pressureswitch

Wide tubeservicevalveWide tube

SubAccumulator

NarrowtubeservicevalveNarrow tube

Heat

exc

hang

er

Heat

exc

hang

er

Muffler

Cooling cycle(Defrosting cycle)

Heating cycle

Indoor unit Outdoor unit

Electricexpansion

valve

Strainer

M

O.D5/8"

(15.88 mm)

O.D.3/8"

(9.52 mm)

H.P.

4. REFRIGERANT FLOW DIAGRAM4-1. Refrigerant Flow DiagramIndoor Unit KHS3082 KHS3682


18

5. PERFORMANCE DATA5-1. Temperature ChartsIndoor Unit KHS3082Outdoor Unit CH3082

Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.

NOTE

Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V)(1) Low pressure performance chart

(2) Operating current performance chart

(3) Indoor discharge air performance chart

-4(-20)

5(-15)

14(-10)

23(-5)

32(0)

41(5)

50(10)

59(15)

68(20)

77(25)

86(30)

95(35)

104(40)

Outdoor inlet air D.B. temp.F(C)



Oper

ating

curre

nt (A

)In

door

disc

harg

e air

tem

pera

ture

F(C

)Lo

w pr

essu

re a

t wide

tube

serv

ice va

lveps

ig(M

PaG)

-4(-20)

5(-15)

14(-10)

23(-5)

32(0)

41(5)

50(10)

59(15)

68(20)

77(25)

86(30)

95(35)

104(40)

-4(-20)

5(-15)

14(-10)

23(-5)

32(0)

41(5)

50(10)

59(15)

68(20)

77(25)

86(30)

95(35)

104(40)

57.2 (14)

64.4 (18)

60.8 (16)

53.6 (12)

50.0 (10)

46.4 (8)

42.8 (6)

10121416182022242628

104(0.7)

117(0.8)

131(0.9)

145(1.0)

159(1.1)

174(1.2)

Hi FanLo fan

Hi FanLo fan

Hi FanLo fan

Indoor Air Tem

p.86F (30C)

80F (27C)

75F (24C)

Indoor Air Tem

p.86F (30C)

80F (27C)

75F (24C)

Indoor A

ir Temp.

86F (30

C)

80F (27

C)

75F (24

C)

Indoor Air Tem

p.86F (30C)

80F (27C)

75F (24C)

Indoor Air Tem

p.86F (30C)

80F (27C)

75F (24C)

Indoor A

ir Temp.

86F (30

C)

80F (27

C)

75F (24

C)

19

Indoor Unit KHS3082Outdoor Unit CH3082

Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value. Overload prevention operates to protect the air conditioner when outdoor ambient temperature becomes extremely high in heating mode. (Refer to "7-2. Overload prevention during heating.")

NOTE

Indo

or d

ischa

rge

air te

mpe

ratu

re F

(C)

23(5)

32(0)

41(5)

50(10)

59(15)

68(20)

77(25)

Outdoor inlet air D.B. temp. F(C)


23(5)

32(0)

41(5)

19

18

17

16

15

14

13

50(10)

59(15)

68(20)

77(25)

Oper

ating

curre

nt (A

)

23(5)

32(0)

41(5)

50(10)

131(55)

122(50)

113(45)

104(40)

95(35)

86(30)

59(15)

68(20)

77(25)


High

pre

ssur

e at

wide

tube

serv

ice va

lveps

ig (M

PaG)

494(3.4)

421(2.9)

348(2.4)

275(1.9)

Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V)(1) High pressure performance chart



63F (17C

)Indoo

r air temp.73

F (23C)

70F (21C

)

63F (17C

)Indoo

r air temp.73

F (23C)

70F (21C

)

63F (17

C)Indo

or air tem

p.73F (2

3C)

70F (21

C)

63F (17

C)Indo

or air tem

p.73F (2

3C)

70F (21

C)

63F (17C

)Indoo

r air temp.

73F (23

C)

70F (21C

)

63F (17C

)Indoo

r air temp.

73F (23

C)

70F (21C

)

20


Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V)(1) Low pressure performance chart



-4(-20)

5(-15)

14(-10)

23(-5)

32(0)

41(5)

50(10)

59(15)

68(20)

77(25)

86(30)

95(35)

104(40)




Oper

ating

curre

nt (A

)In

door

disc

harg

e air

tem

pera

ture

F(C

)Lo

w pr

essu

re a

t wide

tube

serv

ice va

lveps

ig(M

PaG)

-4(-20)

5(-15)

14(-10)

23(-5)

32(0)

41(5)

50(10)

59(15)

68(20)

77(25)

86(30)

95(35)

104(40)

-4(-20)

5(-15)

14(-10)

23(-5)

32(0)

41(5)

50(10)

59(15)

68(20)

77(25)

86(30)

95(35)

104(40)

Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.

NOTE

57.2 (14)

60.8 (16)

64.4 (18)

53.6 (12)

50.0 (10)

46.4 (8)

42.8 (6)

10121416182022242628

104(0.7)

117(0.8)

131(0.9)

145(1.0)

159(1.1)

174(1.2)

Hi FanLo fan

Hi FanLo fan

Hi FanLo fan

Indoor Air Temp

.86F (30C)

80F (27C)

75F (24C)

Indoor Air Temp

.86F (30C)

80F (27C)

75F (24C)

Indoor Ai

r Temp.86

F (30C)

80F (27

C)

75F (24

C)

Indoor Air Temp

.86F (30C)

80F (27C)

75F (24C)

Indoor Air Temp

.86F (30C)

80F (27C)

75F (24C)

Indoor Ai

r Temp.86

F (30C)

80F (27

C)

75F (24

C)

21


Indo

or d

ischa

rge

air te

mpe

ratu

re F

(C)

23(5)

32(0)

41(5)

50(10)

59(15)

68(20)

77(25)



23(5)

32(0)

41(5)

22

21

20

19

18

17

16

50(10)

59(15)

68(20)

77(25)

Oper

ating

curre

nt (A

)

23(5)

32(0)

41(5)

50(10)

131(55)

122(50)

113(45)

104(40)

95(35)

86(30)

59(15)

68(20)

77(25)


High

pre

ssur

e at

wide

tube

serv

ice va

lveps

ig (M

PaG)

494(3.4)

421(2.9)

348(2.4)

275(1.9)

Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value. Overload prevention operates to protect the air conditioner when outdoor ambient temperature becomes extremely high in heating mode. (Refer to "7-2. Overload prevention during heating.")

NOTE

Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V)(1) High pressure performance chart



70F (21C

)

63F (17C

)

Indoor air t

emp.73F

(23C)

70F (21C

)

63F (17C

)

Indoor air t

emp.73F

(23C)

70F (21

C)

63F (17

C)Indo

or air tem

p.73F (2

3C)

70F (21

C)

63F (17

C)Indo

or air tem

p.73F (2

3C)

70F (21

C)

63F (17

C)Indoo

r air temp

.73F (23

C)

70F (21

C)

63F (17

C)Indoo

r air temp

.73F (23

C)

22

Indoor Unit : KHS3082Outdoor Unit : CH3082Power Supply : 230V Single Phase 60Hz

< Cooling Capacity (Low Ambient) >

5-2. Cooling Capacity

TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h)

1.

2. Above data represents the value when the operation frequency of a compressor is fixed.

Above data does not take Freeze Prevention Protection during cooling operation into account. For this reason, the value may vary from the actual cooling characteristics.

NOTE

RATING CAPACITY: 30,600 BTU/h AIR FLOW RATE: 630 CFMINDOOR OUTDOOR

ENT. TEMP. oF (oC) AMBIENT TEMP. oF (oC)W.B. D.B. 0 5 15 25 35 45 55

(-17.8) (-15.0) (-9.4) (-3.9) (1.7) (7.2) (12.8)TC 30,120 30,060 29,930 29,780 29,590 29,330 29,070

72 (22.2) SHC 21,150 21,150 21,020 20,900 20,780 20,660 20,53059 76 (24.4) SHC 23,470 23,470 23,350 23,230 23,230 22,980 22,860

(15.0) 80 (26.7) SHC 25,920 25,920 25,790 25,790 25,670 25,430 25,30084 (28.9) SHC 28,240 28,240 28,120 28,120 27,990 27,870 27,63088 (31.1) SHC 30,120 30,060 29,930 29,780 29,590 29,330 29,070

TC 30,390 30,360 30,270 30,170 30,040 29,820 29,610

72 (22.2) SHC 17,720 17,720 17,600 17,600 17,480 17,360 17,36063 76 (24.4) SHC 20,050 20,050 19,920 19,920 19,800 19,800 19,680

(17.2) 80 (26.7) SHC 22,490 22,490 22,370 22,370 22,370 22,250 22,12084 (28.9) SHC 24,820 24,820 24,820 24,690 24,690 24,570 24,45088 (31.1) SHC 27,140 27,140 27,140 27,020 27,020 26,890 26,770

TC 30,490 30,480 30,450 30,400 30,330 30,160 30,020

72 (22.2) SHC 14,180 14,180 14,180 14,180 14,180 14,050 14,05067 76 (24.4) SHC 16,500 16,500 16,500 16,500 16,500 16,380 16,380

(19.4) 80 (26.7) SHC 19,070 18,940 18,940 18,940 18,940 18,820 18,82084 (28.9) SHC 21,390 21,390 21,390 21,270 21,270 21,150 21,15088 (31.1) SHC 23,710 23,710 23,710 23,710 23,590 23,590 23,470

TC 30,370 30,380 30,410 30,430 30,420 30,310 30,250

72 (22.2) SHC 10,510 10,510 10,510 10,630 10,630 10,510 10,51071 76 (24.4) SHC 12,950 12,950 12,950 12,950 12,950 12,830 12,830

(21.7) 80 (26.7) SHC 15,400 15,400 15,400 15,400 15,400 15,280 15,28084 (28.9) SHC 17,720 17,720 17,720 17,720 17,720 17,720 17,60088 (31.1) SHC 20,050 20,050 20,050 20,050 20,050 20,050 20,050

TC 30,030 30,080 30,170 30,240 30,310 30,250 30,270

75 76 (24.4) SHC 9,410 9,410 9,410 9,530 9,530 9,530 9,530(23.9) 80 (26.7) SHC 11,850 11,850 11,850 11,970 11,970 11,970 11,970

84 (28.9) SHC 14,180 14,180 14,300 14,300 14,300 14,300 14,30088 (31.1) SHC 16,500 16,620 16,620 16,620 16,620 16,620 16,620

23

1. Rating conditions (#) : Indoor Unit Entering Air Temp. 80 F (26.7 C) D.B. / 67 F (19.4 C) W.B.: Outdoor Ambient Temp. 95 F (35 C) D.B.

2.



NOTE

< Cooling Capacity >



ENT. TEMP. oF (oC) AMBIENT TEMP. oF (oC)W.B. D.B. 65 75 85 95 105 115

(18.3) (23.9) (29.4) (35.0) (40.6) (46.1)TC 30,650 29,970 29,190 28,600 24,890 17,310

72 (22.2) SHC 21,390 21,020 20,660 20,290 18,330 14,66059 76 (24.4) SHC 23,710 23,350 22,980 22,610 20,660 16,990

(15.0) 80 (26.7) SHC 26,280 25,790 25,430 25,060 23,100 17,31084 (28.9) SHC 28,610 28,240 27,750 27,380 24,890 17,31088 (31.1) SHC 30,650 29,970 29,190 28,600 24,890 17,310

TC 31,580 30,910 30,160 29,630 25,270 17,560

72 (22.2) SHC 18,330 17,970 17,600 17,360 15,150 11,73063 76 (24.4) SHC 20,660 20,290 19,920 19,680 17,480 14,050

(17.2) 80 (26.7) SHC 23,100 22,740 22,370 22,120 20,050 16,50084 (28.9) SHC 25,430 25,060 24,690 24,450 22,370 17,56088 (31.1) SHC 27,750 27,510 27,020 26,770 24,690 17,560

TC 32,420 31,780 31,050 # 30,600 25,550 17,760

72 (22.2) SHC 15,150 14,790 14,420 14,300 12,100 8,92067 76 (24.4) SHC 17,480 17,110 16,870 16,620 14,420 11,240

(19.4) 80 (26.7) SHC 19,920 19,560 19,310 19,070 16,870 13,69084 (28.9) SHC 22,250 22,000 21,640 21,390 19,190 16,01088 (31.1) SHC 24,570 24,330 23,960 23,710 21,510 17,760

TC 33,130 32,540 31,840 31,490 25,710 17,880

72 (22.2) SHC 11,730 11,480 11,120 11,000 8,670 5,86071 76 (24.4) SHC 14,050 13,810 13,440 13,320 11,120 8,310

(21.7) 80 (26.7) SHC 16,500 16,250 15,890 15,770 13,560 10,75084 (28.9) SHC 18,820 18,580 18,330 18,210 15,890 13,07088 (31.1) SHC 21,150 20,900 20,660 20,530 18,210 15,400

TC 33,630 33,090 32,430 32,190 25,730 17,900

75 76 (24.4) SHC 10,750 10,510 10,260 10,140 7,940 5,370(23.9) 80 (26.7) SHC 13,200 12,950 12,710 12,590 10,380 7,820

84 (28.9) SHC 15,520 15,280 15,030 15,030 12,710 10,14088 (31.1) SHC 17,840 17,720 17,480 17,360 15,030 12,590

24


< Cooling Capacity (Low Ambient) >


1.



NOTE


ENT. TEMP. oF (oC) AMBIENT TEMP. oF (oC)W.B. D.B. 0 5 15 25 35 45 55

(-17.8) (-15.0) (-9.4) (-3.9) (1.7) (7.2) (12.8)TC 30,900 30,870 30,800 30,710 30,590 30,400 30,210

72 (22.2) SHC 21,510 21,510 21,510 21,510 21,390 21,270 21,15059 76 (24.4) SHC 23,960 23,840 23,840 23,840 23,710 23,590 23,470

(15.0) 80 (26.7) SHC 26,400 26,400 26,280 26,280 26,160 26,040 25,92084 (28.9) SHC 28,730 28,730 28,610 28,610 28,480 28,480 28,36088 (31.1) SHC 30,900 30,870 30,800 30,710 30,590 30,400 30,210

TC 31,010 31,010 30,990 30,950 30,890 30,750 30,620

72 (22.2) SHC 17,970 17,970 17,970 17,970 17,970 17,840 17,84063 76 (24.4) SHC 20,410 20,410 20,290 20,290 20,290 20,170 20,170

(17.2) 80 (26.7) SHC 22,860 22,860 22,740 22,740 22,740 22,610 22,61084 (28.9) SHC 25,180 25,180 25,180 25,060 25,060 25,060 24,94088 (31.1) SHC 27,510 27,510 27,510 27,510 27,380 27,380 27,260

TC 30,910 30,940 30,980 31,000 31,010 30,930 30,880

72 (22.2) SHC 14,420 14,420 14,420 14,420 14,420 14,420 14,42067 76 (24.4) SHC 16,740 16,740 16,740 16,740 16,740 16,740 16,740

(19.4) 80 (26.7) SHC 19,190 19,190 19,190 19,190 19,190 19,190 19,19084 (28.9) SHC 21,510 21,510 21,640 21,640 21,640 21,510 21,51088 (31.1) SHC 23,840 23,960 23,960 23,960 23,960 23,960 23,840

TC 30,570 30,620 30,730 30,820 30,910 30,900 30,930

72 (22.2) SHC 10,630 10,630 10,750 10,750 10,750 10,750 10,75071 76 (24.4) SHC 12,950 12,950 13,070 13,070 13,070 13,070 13,070

(21.7) 80 (26.7) SHC 15,400 15,400 15,520 15,520 15,520 15,520 15,52084 (28.9) SHC 17,720 17,840 17,840 17,840 17,970 17,970 17,97088 (31.1) SHC 20,170 20,170 20,170 20,170 20,290 20,290 20,290

TC 30,010 30,090 30,260 30,430 30,590 30,650 30,770

75 76 (24.4) SHC 9,410 9,410 9,530 9,530 9,650 9,650 9,650(23.9) 80 (26.7) SHC 11,850 11,850 11,970 11,970 12,100 12,100 12,100

84 (28.9) SHC 14,180 14,180 14,300 14,300 14,420 14,420 14,42088 (31.1) SHC 16,500 16,620 16,620 16,740 16,740 16,740 16,870

25


< Cooling Capacity >


1. Rating conditions (#) : Indoor Unit Entering Air Temp. 80 F (26.7 C) D.B. / 67 F (19.4 C) W.B.: Outdoor Ambient Temp. 95 F (35 C) D.B.

2.



NOTE

RATING CAPACITY: 34,000 BTU/h AIR FLOW RATE: 630 CFM

INDOOR OUTDOORENT. TEMP. oF (oC) AMBIENT TEMP. oF (oC)

W.B. D.B. 65 75 85 95 105 115(18.3) (23.9) (29.4) (35.0) (40.6) (46.1)

TC 34,170 33,480 32,690 32,110 24,650 16,770

72 (22.2) SHC 23,470 23,100 22,610 22,250 18,210 14,420

59 76 (24.4) SHC 25,790 25,430 24,940 24,570 20,530 16,740

(15.0) 80 (26.7) SHC 28,240 27,870 27,380 27,020 22,980 16,770

84 (28.9) SHC 30,560 30,200 29,710 29,460 24,650 16,77088 (31.1) SHC 33,010 32,520 32,030 31,790 24,650 16,770

TC 35,010 34,360 33,600 33,100 24,850 16,910

72 (22.2) SHC 20,170 19,800 19,310 19,070 15,030 11,480

63 76 (24.4) SHC 22,490 22,120 21,760 21,390 17,360 13,810

(17.2) 80 (26.7) SHC 24,940 24,570 24,200 23,840 19,800 16,250

84 (28.9) SHC 27,260 26,890 26,530 26,280 22,120 16,91088 (31.1) SHC 29,580 29,220 28,850 28,610 24,450 16,910

TC 35,720 35,120 34,400 # 34,000 24,930 16,970

72 (22.2) SHC 16,620 16,380 16,010 15,890 11,730 8,670

67 76 (24.4) SHC 19,070 18,700 18,330 18,210 14,180 11,000

(19.4) 80 (26.7) SHC 21,510 21,150 20,900 20,660 16,620 13,440

84 (28.9) SHC 23,840 23,590 23,230 22,980 18,940 15,77088 (31.1) SHC 26,160 25,920 25,550 25,300 21,270 16,970

TC 36,270 35,710 35,040 34,780 24,870 16,950

72 (22.2) SHC 13,070 12,830 12,460 12,340 8,430 5,610

71 76 (24.4) SHC 15,400 15,150 14,790 14,790 10,750 7,940

(21.7) 80 (26.7) SHC 17,840 17,600 17,360 17,230 13,200 10,380

84 (28.9) SHC 20,170 19,920 19,680 19,560 15,520 12,71088 (31.1) SHC 22,490 22,250 22,000 21,880 17,840 15,030

TC 36,560 36,070 35,450 34,630 24,680 16,830

75 76 (24.4) SHC 11,850 11,610 11,360 11,120 7,570 5,130

(23.9) 80 (26.7) SHC 14,300 14,050 13,810 13,560 10,020 7,570

84 (28.9) SHC 16,620 16,500 16,250 15,890 12,340 9,90088 (31.1) SHC 18,940 18,820 18,580 18,210 14,660 12,220

26


< Heating Capacity >

5-3. Heating Capacity

TH : Total Heating Capacity (BTU/h)

1. Rating conditions (#) : Indoor Unit Entering Air Temp. 70 F (21.1 C) D.B. : Outdoor Ambient Temp. 47 F (8.3 C) D.B. / 43 F (6.1 C) W.B.

2.


Above data does not take Defrost Operation, Overload Prevention Protection, and/or Cold AirPrevention Protection during heating operation into account. For this reason, the value may varyfrom the actual heating characteristics.

NOTE

RATING CAPACITY: 33,000 BTU/h AIR FLOW RATE: 671 CFMOUTDOOR INDOOR

ENT. TEMP. oF (oC) AMBIENT TEMP. oF (oC)W.B. 60 65 70 75 80

(15.6) (18.3) (21.1) (23.9) (26.7)0 (-17.8) TH 18,060 18,120 18,170 18,210 18,240

3 (-16.1) TH 18,670 18,730 18,780 18,820 18,850

8 (-13.3) TH 20,120 20,190 20,240 20,280 20,320

13 (-10.6) TH 21,640 21,710 21,770 21,810 21,840

18 (-7.8) TH 23,320 23,390 23,450 23,500 23,530

23 (-5.0) TH 25,100 25,170 25,230 25,280 25,310

28 (-2.2) TH 26,960 27,030 27,090 27,140 27,160

33 (0.6) TH 28,900 28,970 29,030 29,070 29,090

38 (3.3) TH 30,830 30,900 30,950 30,990 30,500

43 (6.1) TH 32,880 32,950 # 33,000 33,030 30,830

48 (8.9) TH 34,980 35,050 35,090 35,120 31,060

53 (11.7) TH 37,120 37,180 37,220 35,460 31,180

58 (14.4) TH 39,210 39,260 39,280 35,480 31,180

63 (17.2) TH 41,380 41,410 40,090 35,340 31,050

65 (18.3) TH 42,230 42,260 39,980 35,250 30,960

27


< Heating Capacity >

TH : Total Heating Capacity (BTU/h)

1. Rating conditions (#) : Indoor Unit Entering Air Temp. 70 F (21.1 C) D.B. : Outdoor Ambient Temp. 47 F (8.3 C) D.B. / 43 F (6.1 C) W.B.

2.


Above data does not take Defrost Operation, Overload Prevention Protection, and/or Cold AirPrevention Protection during heating operation into account. For this reason, the value may varyfrom the actual heating characteristics.

NOTE

RATING CAPACITY: 36,000 BTU/h AIR FLOW RATE: 671 CFMOUTDOOR INDOOR

ENT. TEMP. oF (oC) AMBIENT TEMP. oF (oC)W.B. 60 65 70 75 80

(15.6) (18.3) (21.1) (23.9) (26.7)0 (-17.8) TH 19,760 19,860 19,940 20,010 20,080

3 (-16.1) TH 20,420 20,510 20,600 20,670 20,740

8 (-13.3) TH 21,990 22,090 22,180 22,260 22,330

13 (-10.6) TH 23,630 23,730 23,830 23,920 23,990

18 (-7.8) TH 25,440 25,560 25,660 25,750 25,820

23 (-5.0) TH 27,360 27,480 27,590 27,680 27,140

28 (-2.2) TH 29,370 29,490 29,600 29,700 27,580

33 (0.6) TH 31,460 31,590 31,700 31,560 27,940

38 (3.3) TH 33,540 33,670 33,780 31,900 28,210

43 (6.1) TH 35,760 35,890 # 36,000 32,150 28,410

48 (8.9) TH 38,030 38,160 36,450 32,300 28,520

53 (11.7) TH 40,340 40,460 36,500 32,330 28,530

58 (14.4) TH 42,580 41,040 36,420 32,230 28,430

63 (17.2) TH 44,920 40,770 36,160 32,000 28,210

65 (18.3) TH 45,520 40,610 36,020 31,870 28,090

28

Horizontal distance (ft.)

Axis

air ve

locit

y (ft.

/sec.)

Verti

cal d

istan

ce (f

t.)

Room air temp. : 70F (21.1C)Fan speed : HighHeating


Axis

air ve

locit

y (ft.

/sec.)

Verti

cal d

istan

ce (f

t.)Room air temp. : 80F (26.7C)Fan speed : HighCooling

: Flap angle 0 , : Axis air velocity 0 : Flap angle 30 , : Axis air velocity 30


5-4. Air Throw Distance ChartsIndoor Unit KHS3082

0

5

10

15

0 5 10 15 20 25 30

: Flap angle 0 , : Axis air velocity 0

: Flap angle 30, : Axis air velocity 30

0

5

10

15

0 5 10 15 20 25 30



29


Axis

air ve

locit

y (ft.

/sec.)

Verti

cal d

istan

ce (f

t.)

Room air temp. : 70F (21.1C)Fan speed : HighHeating


Axis

air ve

locit

y (ft.

/sec.)

Verti

cal d

istan

ce (f

t.)Room air temp. : 80F (26.7C)Fan speed : HighCooling



Indoor Unit KHS3682

0

5

10

15

0 5 10 15 20 25 30


: Flap angle 30, : Axis air velocity 30

0

5

10

15

0 5 10 15 20 25 30



30

6. ELECTRICAL DATA6-1. Electrical CharacteristicsIndoor Unit KHS3082Outdoor Unit CH3082

Indoor Unit Outdoor UnitFan Motor Fan Motor + Compressor

Performance at 230V Single-phase 60HzRating conditions Running amp. A 0.4

Power input W

AW

AW

AW

3916.1

3,251Rating conditions: Indoor air temperature: 80F (26.7C) D.B. / 67F (19.4C) W.B. Outdoor air temperature: 95F (35C) D.B.

Rating conditions: Indoor air temperature 70F (21.1C) D.B. Outdoor air temperature 47F (8.3C) D.B. / 43F (6.1C) W.B.

Heating

Cooling

16.53,290


Performance at 230V Single-phase 60HzRating conditions Running amp. 0.5

Power input 4314.8

3,02715.3

3,070



Power input 3917.6

3,251

Heating

Cooling

< 230V >

< 208V >(2) Voltage:208V

(1) Voltage:230V

18.03,290



Power input 4316.3

3,02716.8

3,070

Rating conditions: Indoor air temperature: 80F (26.7C) D.B. / 67F (19.4C) W.B. Outdoor air temperature: 95F (35C) D.B.


Complete Unit

Complete Unit

Complete Unit

Complete Unit

31



Performance at 230V Single-phase 60HzRating conditions Running amp. A 0.4

Power input W

AW

AW

AW

3919.6

3,961Rating conditions: Indoor air temperature: 80F (26.7C) D.B. / 67F (19.4C) W.B. Outdoor air temperature: 95F (35C) D.B.


Heating

Cooling

20.04,000



Power input 4317.7

3,60718.2

3,650



Power input 3921.5

3,961

Heating

Cooling

< 230V >

< 208V >(2) Voltage:208V

(1) Voltage:230V

21.94,000



Power input 4319.4

3,60719.9

3,650

Rating conditions: Indoor air temperature: 80F (26.7C) D.B. / 67F (19.4C) W.B. Outdoor air temperature: 95F (35C) D.B.


Complete Unit

Complete Unit

Complete Unit

Complete Unit

32

8FA2-5250-70400-3

6-2. Electric Wiring DiagramsIndoor Unit KHS3082 KHS3682

EVAPORATOR

TERMINAL BASE

TO O

UTDO

OR U

NIT

LAMP9P(WHT)

FLAP5P (WHT)M

FLAP MOTOR

REDORGYELPNKBLU

12345

12345

AC IN COM SIBLKWHT

BLKBLKBLKBLKBLKBLKBLK

123456789

123456789

123456789

123456789

IND

LAM

P AS

SY

OPERATION SW

COIL4P(WHT)

DCM7P(BLU)

S-LINK (RAC)4P (BLU)

GND2P(WHT)

CONTROLLER

M

FAN MOTOR

PL ELEC J-B

234567

1234567

1

234

1

BLKBLK

12

12

COIL THERMISTORt

ROOM/UV4P (WHT)

123

123

4 4

T106P (BLU)

1 2 43 65

WHTBLK

RED

RED

21

21GRN/YEL

BLK

YELWHT

BLU

GRN/YEL

123

U1U2

BLKBLK

ROOM THERMISTORUV ASSY

t

REDBLU

33


8FA2-5250-70000-1

1 2 3 4 5

INDO

ORUN

IT

POW

ER

SUP

PLY

GND

TERM

INAL

(5P)

CRAN

KCAS

EHE

ATER

FAN

MOT

ORM

AGNE

TIC

COIL

COIL THERMISTORNOIS

E FI

LTER

P.C.

BOAR

D

CONT

ROL P

.C.B

OARD

HIC

BOAR

D

CT (BRN

)AC

OUT

(ORG

)DC

OUT

(WHT

)PR

Y(G

RN)

(BRN

)CT

(RED

)FM

2(R

ED)

FM1

(WHT

)M

V(B

LK)

COIL

(ORG

)AC

IN(W

HT)

DCIN

(GRN

)PR

Y(W

HT)

TEST

/MV

HIC1

(WHT

)CN

01(W

HT)

CN02

(WHT

) RS M 3

T

UV

W

TH01

(YEL

)

HIC2

(WHT

)

REAC

TOR

C1

L1L2

L3L4

C1C2

ACIN

1AC

IN2

E1

SI CH1

CH2S-

COM

E2

w

w w

w

w

ww

w

BLK

WHT

WHT

WHT

RED

BLK

GRN/YEL

GRN/YEL

1

1 1

1 1

21

2

12

1

1 12 2

3 31 1

1 12 2

1 12 2

3 34 4

5 53 3

2

WHT

WHT

13

13

13

13

BLK

WHT

13

13

13

13

BLK

WHT

12

12

12

12

31

2

BLK

WHT

BLK

WHT

BLK

WHT

HIC+

HIC-

HIC+

HIC-

TH1

AC1

BRID

GE D

IODE

HEAT

SIN

K (R

ADIA

TOR)

AC2

DC+

DC-

+ --

BLK

WHT

WHT

WHT

WHT

WHT

MM

BRN

WHT

ORG

RED

BLU

ORG

RED

YEL

BLK

GRY

t

YEL

YEL

COMPRESSOR

THERMISTOR

OUTDOOR

THERMISTOR

4WAY

VAL

VECO

IL

HIGH

PRESSURE SW

(WHT

)CO

MP

1 12 2

t

BLK

BLK

(YEL

)OU

TDOO

R1 1

2 2

(BLK

)RV

(BLK

)HP

-SW

(RED

)OL

R

COM

PRES

SOR

MOT

OR

OVER

LOA

D RE

LAY

1

1 2 3 4 5 6 7 8 9 10

1 2 3 4 5 6 7 8 9 10

1 2 3 4 5 6 7 8 9 10

1 2

1 2

3 4 5 6 7 8 9 10

13 3

t

BLK

BLK

1 12 2

1 12 2

BLK

BLK

RED

RED

BLK

WHT YE

L

BLU

WHT BLK

BLK

BLK

BLK

BLK

BLK

BLK

BLK

BLK

1 2 3 4 5 6 7 8 9 10

1 2 3 4 5 6 7 8 9 10

1 2 3 4 5 6 7 8 9 10

1 2 3 4 5 6 7 8 9 10

BLK

BLK

BLK

BLK

BLK

BLK

BLK

1111

1111

BLK

GRY

YEL

YEL

YEL

RED

WHT

GRN/

YEL

BLU

WHT

WHT

t

34

Emergency operation SENSOR DRY

AUTO cooling/heating operation Selecting the operation mode

During DRY operation, the system adjusts the room temperature and fan speed according to the conditions in the room, in order to maintain a comfortable room environment.

SENSOR DRY operation DRY operation is as shown in the figure below.

The compressor operation frequency varies. The indoor fan operates with 1/f fluctuation.

The compressor operates at a low operating frequency. The indoor fan operates with 1/f fluctuation.

When room temperature rises above the set temperature, the compressor turns ON. When room temperature falls below the set temperature, the compressor turns OFF.

The Sensor Dry operation during the Low Ambient Cooling Mode (outside air temperature : 59F(15C) or lower) is as follows.

Monitoring operation takes place when the room temperature is below 59F(15C), or more than 5F(3C) below the set temperature.

When the monitoring range is entered, the compressor stops, and the indoor fan operates with 1/f fluctuation.

DRY A

DRY B

DRY A DRY B

Monitor

Conditions are monitored at all times when the room temperature is below 59F(15C).

Load

COOL zone

A zone

B zone

Emergency operation is available when the remote controller malfunctions, has been lost, or otherwise cannot be used.

The set temperature is 4F(2C) below the detected room temperature in the case of cooling operation, and 4F(2C) above the room temperature in the case of heating operation. The flap and fan speed settings are AUTO.

(GREEN) (RED) (Lamp Off)COOL HEAT STOP

When AUTO mode is selected, the microprocessor calculates the difference between the set temperature and the room temperature, and automatically switches to Cooling or Heating mode.

As shown by the example in the figure below, with AUTO cooling/heating operation, the mode changes between Heating and Cooling mode according to changes in the relationship between the current room temperature and the set temperature.

Room temp. Set temp. COOLRoom temp. Set temp. HEAT

74

Zone A

Zone B

Zone CZone C

Zone B

Zone A

OFF OFFCompressor

Operation mode

Room temp.

HeatingCooling Cooling

ON ON ON

More than1 hour

Within1 hour

Set temp.

ExampleExample of operation in AUTO mode with the set room temperature at 74F(23C).

To operate the system, press the OPERATION button, which is also used as the receiver, below the unit display. Each time this button is pressed, the OPERATION lamp changes color to indicate the type of operation. Select the desired type of operation.

7. FUNCTIONS7-1. Operation Functions

NOTE

and

35

HIGH POWER NIGHT SETBACK

Lamp colors

Timer backup

This function acts to raise the power but keeps the AC system in the same operating mode.This function is set with the HIGH POWER button on the remote controller.(It can be set regardless of the temperature and fan speed settings.) HIGH POWER operation from remote controller The unit operates at maximum output for 30 minutes,

regardless of the desired temperature. The fan speed is 1 step above "High."

OPERATION lamp

When HIGH POWER operation ends, the unit operates at low Hz for 5 minutes, regardless of the thermostat OFF conditions.

When in DRY mode, operation is in the cooling zone.

Operation stops if there are no operator controls for 25 hours or longer after unit operation switched from OFF to ON by use of ON timer operation.

Frequency

MAX

0

Start End

Time30 min. 5 min.

Settingtemperature

Press the NIGHTSETBACK button

When NIGHT SETBACK operation is set, the temperature and fan speed settings will be adjusted automatically to allow comfortable sleep.

When NIGHT SETBACK operation is set, " mark" appears on the remote controller. The main unit display lamp also becomes dimmer.

COOL and DRY modesWhen the night setback mode is selected, the air conditioner automatically raises the temperature setting 2F(1C) when 30 minutes have passed after the selection was made, and then another 2F(1C) after another 30 minutes have passed, regardless of the indoor temperature when night setback was selected. This enables you to save energy without sacrificing comfort. This function is convenient when gentle cooling is needed.

HEAT modeWhen the night setback mode is selected, the air conditioner automatically lowers the temperature setting 4F(2C) when 30 minutes have passed after the selection was made, and then another 4F(2C) after another 30 minutes have passed, regardless of the indoor temperature when night setback was selected. This enables you to save energy without sacrificing comfort. This function is convenient when gentle heating is needed.

TIMER lamp GreenLED CLEAN lamp Green

HEAT operation RedDRY operation OrangeCOOL operation GreenFAN operation GreenDEFROSTING operation Red and Orange alternately

NOTE30 min. 30 min. Time

2F(1C)

Settingtemperature

Press the NIGHTSETBACK button

30 min. 30 min. Time

4F(2C)4F(2C)

2F(1C)

36

The noise reducing control is the function used for silent operation of the air conditioner by means of setting the dip switch on the outdoor unit P.C.Board to control the fan and compressor's motor speed.

(1) Remove the 3 screws fixing the inspection panel and remove the inspection panel. (Fig. 2)(2) When the switch No. 1 of the dip switch (SW01) on the control P.C.Board is turned ON, the noise reducing control is enabled. (Fig. 3)

When this function is used, the cooling or heating ability is slightly degraded. Therefore, when this function is to be enabled, make sure to receive the approval of the client.

1. In the test operation, high-power operation, defrost operation or low ambient cooling operation (to be cancelled at the outside temperature of 14 C or less, or 17 C or more), the noise reducing control is not available. 2. In the noise reducing operation, the fan's maximum motor speed is limited to 500rpm. Also, the maximum frequency (Hz) is controlled in the cooling (30Hz) or heating operation (30Hz).

Specifications

Cooling Heating Cooling Heating55 dB-A 55 dB-A 47 dB-A 47 dB-A

Noise Reducing Control(Fan's motor speed : 500rpm)

Normal Operation

Normal Operation or Noise Reducing Operation is kept.

(Initial setting is the normal operation.)

Noise Reducing Operation

Outdoor Air Temp. [C]

33

28

Noise Reducing Control (Outdoor Unit)

Noise Reducing Operation

Normal Operation or Noise Reducing Operation is kept.

(Initial setting is the normal operation.)

Normal Operation

Outdoor Air Temp. [C]

15

10

Fig.2 View from front

Fig.3 Control P.C.Board

SW01

Dip switch (SW01)

ON

1 2

Power lamp

NOTE

NOTE

Control P.C.Board

Inspection panel

Slide downward

37

The maximum current value is changed to 14A (for CH3082) or 17A (for CH3682) to prevent power breaker tripping. (It is set to 24A (in cooling) or 22A (in heating) when the unit is delivered from the factory.)

(1) Remove the inspection panel. Refer to Fig. 2 in " Noise Reducing Control" for details. (2) When the switch No.2 of the dip switch (SW01) on the control P.C.Board is turned ON, the maximum current value change. (Fig. 4)

Maximum Current Value Change Function

< CH3082 >

Current Value on the Point C

Current Valueon the Point BCurrent Valueon the Point A

In coolingoperation

In heatingoperation

< CH3682 >

Current Value on the Point C

Current Valueon the Point BCurrent Valueon the Point A

(25.0)

22.0

21.6

(25.0)

22.0

21.6

(25.0)

24.0

23.6

(25.0)

23.5

23.1

In coolingoperation

In heatingoperation

Dip Switch (SW01)Switch No.2

ONOFF

Max. Current ValueCH3082 CH368214.0A 17.0A22.0A 24.0A

1. When the high load is given (Outside temperature is high in the cooling operation, or outdoor temperature is low in the heating operation), the capacity is reduced. When the maximum current value change function is to be enabled, make sure to receive the approval of the client.2. The maximum capacity for cooling or heating operation is about as much as the rated capacity.

NOTE

Description of functionExample of operation for heating

Frequency

Frequ

ency

Curre

nt

Stops operationApprox.3 minutes

Power Point CPoint BPoint A

Targetfrequency

Operates at the target frequency at Point A and below.Stops increases to the frequency between Points A and B.Reduces the frequency by 1 Hz per 0.5 seconds when Point B is exceeded.Stops operation, and restarts it appoximately 5 minutes later, if Point C is exceeded.(May operate when sudden voltage fluctuations occur. Indicates trouble.)

Fig.4 Control P.C.Board

SW01

Dip switch (SW01)

ON

1 2

Power lamp

38

Overload prevention during heatingDuring HEAT operation, the temperature of the indoor heat exchanger is used to control the frequency and lessen the load on the compressor before the protective device is activated.

Cold-air prevention during heating

Compressor discharge temperature control

During heating, the fan speed is set to "LL" (very low) or stopped.As the temperature of the indoor heat exchanger rises, the fan speed is changed to the set speed.

Freeze preventionDuring COOL or DRY operation, freezing is detected and operation is stopped when the temperature of the indoor heat exchanger matches the conditions below.1. Freeze-prevention operation is engaged when the

temperature of the indoor heat exchanger is below 41F(5C).2. Restart after freeze-prevention operation occurs when the

temperature of the indoor heat exchanger reaches 46F(8C) or above.

a. Area: Automatic capacity controlb. When Point A has been exceeded, the operation frequency is

reduced by a certain proportion.c. Area: Frequency increase is prohibited.d. At Point B and below, overload prevention is ended and

control is the same as in the a area.

a. Area: Automatic capacity controlb. When the temperature drops below Point A, the operation

frequency is reduced by a certain proportion.c. Area: Frequency increase is prohibited.d. When the temperature reaches Point C or above, freezing

prevention is ended and control is the same as in the a area.* When the temperature drops to below 36F(2C)

(continuously for 2 minutes or longer), the compressor stops.Once the freeze condition is detected, the air conditioner will work less than the maximum frequency until it is turned off.

Approx.133(56) At stability of operation

At start of operation

A High

LLStopped

A

*

B

C

B

Indoor heat exchangerA. Control startB. Control end

Set fan speed

77(25)

86(30)

Approx. 95(35)

a b c d

a b c d

Indoo

r hea

t exc

hang

ertem

pera

ture

F(C

)

Indoor heat exchangertemperature F(C)

Indoo

r hea

t exc

hang

ertem

pera

ture

F(C

)

Approx.122(50)

36(2)

41(5)

46(8)

The fan speed is forcibly changed to "LL" beginning 30 seconds after the thermostat turns OFF.

At stability of operation refers to operation when the room temperature has approached the set temperature.

When HEAT operation starts, the indoor fan is stopped until the temperature of the indoor heat exchanger reaches 68F(20C) or higher, or until the room temperature reaches 59F(15C) or higher.

This function controls the operation frequency to prevent the compressor discharge temperature from rising more than a specified temperature.

a. Area: Automatic capacity control.b. When the temperature rises above Point A, the operation

frequency is reduced at a specified rate.c. Area: Further frequency increase is prohibited.d. When the temperature falls below Point B, prevention of a rise

in frequency is released and the air conditioner operates as in a area.

* The compressor will stop if the temperature of the compressor discharge exceeds 248F(120C) due to shortage of gas or other reason.

Approx.214

(101)A

B

a b c d

Compressor discharge temperature F(C)

Approx.201(94)

NOTE

7-2. Protective Functions

39

This function prevents the circuit breaker or fuse from operating to open the circuit. This function works when electrical current has increased due to an increase in the cooling / heating load, or to a decrease in the power supply voltage. In these cases, operation frequency is reduced or operation is interrupted auto-matically to control the electrical current for operation.When the cause of the increase in electrical current is rectified, the system will resume operation in the original mode.

Electrical current setting for COOL operation is used during DEFROST operation.

Cooling Dry HeatingPeak current cut-off trips 25.0

Hz down 22.0

(A)

CT (Peak current cut-off control)

NOTE

NOTE

Heating operation

Frost sensing

Reverse-cycle defrosting operation

Defrosting Sequence

Releasing of defrosting

Outdoor fan ON4-way valve ON

Outdoor heating exchanger temp. is over 57.2F (14C).Defrosting operation lasts 12 minutes (maximum).2 minutes after it is stopped, compressor is ON.4-way valve is ON. Outdoor fan is ON.

If the air conditioner is turned off during the defrosting cycle, it will continue defrosting and turn itself off after defrosting is completed.

Compressor 1 minute after it is stopped, compressor is ON. Outdoor fan OFF Indoor fan OFF4-way valve OFFOperation lamp

Reverse-Cycle Defrosting

Defrost detection and release

Repeatedly switches between red and orange illumination.

Defrost detection occurs in either of the following cases:

The temperature of the heat exchanger remains at or below the L2 line for 120 minutes after the start of HEAT operation.

Outdoor heat exchanger temp.

Ambient temp.0

L1L2

Frosting area

The temperature of the heat exchanger remains at or below the L1 line for 3 minutes after the start of HEAT operation.

< KHS3082 >

Cooling Dry HeatingPeak current cut-off trips 25.0

Hz down 24.0 23.5

(A)< KHS3682>

40

8. TROUBLESHOOTING8-1. Precautions before Performing Inspection or Repair

NOTE

After checking the self-diagnostics monitor, turn the power OFF before starting inspection or repair.High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter). They retain an electrical charge (charging voltage DC 310V) even after the power is turned OFF, and some time is required for the charge to dissipate. Be careful not to touch any electrified parts before the controller LED (red) turns OFF.If the outdoor controller is normal, approximately 30 seconds will be required for the charge to dissipate. However, allow at least 5 minutes for the charge to dissipate if there is thought to be any trouble with the outdoor controller.

1: If the operation lamp blinks every 0.5 seconds immediately when the power is turned ON, there is an external ROM (OTP data) failure on the indoor circuit board, or a ROM socket insertion problem, or the ROM has not been installed.

2: The failure mode is stored in memory even when the power is not ON. Follow the procedure below to perform diagnostics.

8-2. Method of Self-DiagnosticsFollow the procedure below to perform detailed trouble diagnostics.

< Clock display >Test run mode

Self-diagnostics mode

Deletion of self-diagnostics report mode

PROCEDURE

Step 1: Press and hold the remote controller QUIET button and 1 HR TIMER button. Then, press and hold the ACL (reset) button with a pointed object such as the tip of a pen. After 5 seconds, release ACL button first, then release QUIET and 1 HR TIMER buttons, "oP-1" (test run) appears, blinking in the remote controller clock display area.

Step 2: Next, press the 1 HR TIMER button twice to change the display from "oP-1" to "oP-2" and "oP-3" (self-diagnostics). (The display continues to blink.)

Step 3: Finally press the ON/OFF button to engage self-diagnostics mode.

The self-diagnostics function utilizes the 3 indicator lamps on the main unit, in combinations of ON lamps, blinking lamps, and OFF lamps, to report the existence of sensor trouble or a protective operation. (The lamps blink or remain ON for 5 seconds, then turn OFF for 2 seconds.) Self-diagnostics is completed when the buzzer sounds 3 short beeps.

A maximum of 3 self-diagnostics reports are displayed, for 5 seconds each, beginning with the most recent report. Following this display the lamps turn OFF. In order to view the self-diagnostics results again, press the ON/OFF button again.

The 3 lamps remain OFF if no trouble has occurred.

After self-diagnostics is completed, be sure to press the ACL (reset) button to return to normal mode. The air conditioner will not operate if this is not done.

After turning on power to the air conditioner, use the remote controller and follow the steps below to execute self-diagnostics.

1HR.TIMERbutton

ON/OFFoperationbutton

ACL(Reset)button

QUIETbutton

41

Since the indications cover various units, the corresponding parts listed below may not be present in some models.

(1) OPERATION lamp(2) TIMER lamp

(3) LED CLEAN lamp

OPERATION TIMERLED CLEAN

ON/OFF

INDOOR UNIT

(1) Self-diagnostics Lamps

.... OFF .... Blinking .... ON (Illuminated)LED Clean

(3)Operation

(1)Timer

(2)

Indication on indoor unit

(1) Sensor open circuit or short circuit(2) Contact failure at connector or open circuit at terminal crimping location (short-circuit detection only for the humidity sensor)(3) Indoor/outdoor PCboard failure

(1) Sensor open circuit or short circuit(2) Contact failure at connector or open circuit at terminal crimping location(3) Outdoor PCboard failure

Outdoor PCboard failure

(1) Mis-wiring (2) AC power failure (3) Blown fuse (4) Power Relay failure (5) Indoor or outdoor PCboard failure (6) Outdoor Fan Motor failure (7) Reactor failure(8) High-Pressure Switch failure (9) Overload Relay failure (10) Magnetic Coil failure* See detailed flowchart in this section.(1) HIC or power Tr failure (2) Outdoor fan does not turn. (3) Instantaneous power outage (4) Service valve not opened. (5) Outdoor fan blocked. (6) Continuous overload operation (7) Compressor failure (8) Outdoor PCboard failure

(1) External ROM data failure (2) Outdoor PCboard failure

(1) Instantaneous power outage (2) HIC or power transistor failure (3) Outdoor PCboard failure(1) Outdoor PCboard failure (2) Outdoor power supply voltage failure

(1) Electric expansion valve failure (2) Capillaries choked (3) Shortage of refrigerant(4) Continuous overload operation (5) Outdoor fan does not rotate (6) Outdoor PCboard failure

(1) Fan motor failure (2) Contact failure at connector (3) Indoor PCboard failure

(1) 4-way valve failure (heat pump model only)(2) Outdoor PCboard failure

(1) Service valve not opened. (2) Shortage of refrigerant

(1) Open phase (2) Outdoor PCboard failure

(1) Fan motor failure (2) Contact failure at connector (3) Outdoor PCboard failure

(1) Mis-wiring (2) Blown fuse (3) Power Relay failure (4) Outdoor PCboard failure (5) Compressor failure* See detailed flowchart in this section.

(1) Indoor fan system failure (2) Shortage of refrigerant (3) Low-temperature operation

S01S02S03

S04

S05

S06S07

E01

E02

E03E04E05

E06

E07

E08

E09E10

E11

E12

E13

F10F02F13

F04/F12F09/F15 to F18F08/F21 to F24

F27

E05

P26

F31P16P07

P03

P01

P19

P15P29

P22

E07/P04/P05P20/P27

P11

Diagnosis ContentsErrorCodeAlarmCode Possible Malfunction

Room temperature sensor failure

Indoor heat exchanger sensor failure

Humidity sensor failure

Compressor temperature sensor failure

Outdoor heat exchanger sensor failure

Outdoor air temperature sensor failure

Outdoor electrical current detection failure

Indoor/outdoor communications failure (serial communications)

HIC circuit failure Power Tr (transistor) circuit failure

PAM circuit failure Active circuit failure

4-way valve switching failure Indoor zero-cross failure

Outdoor system communications failure OLR operation Outdoor power supply open phase Outdoor coil freezing

Outdoor unit external ROM (OTP data) failurePeak current cut-off

Compressor discharge overheat prevention activated.

No-refrigerant protection

DC compressor drive circuit failure

Outdoor fan operating failure

Freeze-prevention operation activated.

Indoor fan operating failure

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(2) If the self-diagnostics function fails to operate

Check the indoor unit.

Is the fuse blown?

Replace the controller.Replace the circuitboard or the fuse.

No indicators illuminate and the indoor fan does not rotate.Check the power voltage.

Normal

Blown

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8-3. Checking the Indoor and Outdoor Units(1) Checking the indoor unit

(2) Checking the outdoor unit

Using the TEST/T-RUN terminals

ControlNo. Check items (unit operation)

T-RUN : Test run (compressor and fan motor turn ON).TEST/MV : Compresses time to 1/60th (accelerates

operation by 60 times faster than normal).

Use the remote controller to operate theunit in "TEST run" mode. To determinewhether the mode is currently in"TEST run" mode, check the 4 indicator lamps on the unit. If all 4 are blinking,the current mode is "TEST run."

If there are no problems with the above, then check the outdoor unit.

1 The rated voltage must be present between inter-unit wirings 1 and 2.Connect a 5 k ohm resistor between inter-unit wirings 2 and 3. When the voltage at both ends is measured, approximately 12 to 15V DC must be output and the multimeter pointer must bounce once every 8 seconds.Or instead of measuring the voltage, you can insert an LED jig and check that the LED flickers once every 8 seconds.

ControlNo. Check items (unit operation)Apply the rated voltage between outdoor unit terminals L and N.

If there are no problems with the above, then check the indoor unit.

1 The control panel LED (red) must illuminate.

Short-circuit the outdoor unit COM terminal to the T-RUN terminal.

2 The compressor, fan motor and 4-way valve must all turn on.

TEST/T-RUN terminals

(TEST)/MV T-RUN COM

For the "Test run" procedure, refer to the Appendix B "Installation Instructions".

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(3) Serial Communication Error Identification Procedure

Refer to "Method of Self-Diagnostics" for the self-diagnostics procedure.

(3-1) Alarm Code : E05

< Before the Operation >

If the lamps on the main body show the following conditions after the completion of self-diagnostics,a communication error between the i