Mitsubishi PKA-A12GA1, PKA-A18GA1, PKA-A12GA2, PKA-A18GA, PKA-A18GA2 Service Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS SPLIT-TYPE, AIR CONDITIONERS

SERVICE MANUAL

April 2009

No.OC369

REVISED EDITION-D

Indoor unit [Model names]

PKA-A12GA PKA-A18GA PKA-A24FA PKA-A30FA PKA-A36FA PKA-A12GAL PKA-A18GAL PKA-A24FAL PKA-A30FAL PKA-A36FAL

PKA-A12GA PKA-A18GA PKA-A12GAL PKA-A18GAL

TEMP.

[Service Ref.] PKA-A12GA PKA-A12GA1 PKA-A12GA2

PKA-A18GA PKA-A18GA1 PKA-A18GA2 PKA-A24FA PKA-A24FA1 PKA-A24FA2 PKA-A30FA PKA-A30FA1 PKA-A30FA2 PKA-A36FA PKA-A36FA1 PKA-A36FA2 PKA-A12GAL PKA-A12GAL1 PKA-A12GAL2 PKA-A18GAL PKA-A18GAL1 PKA-A18GAL2 PKA-A24FAL PKA-A24FAL1 PKA-A24FAL2 PKA-A30FAL PKA-A30FAL1 PKA-A30FAL2 PKA-A36FAL PKA-A36FAL1 PKA-A36FAL2

Indoor unit

ON/OFF

Model name indication

Revision:

• "14. RoHS PARTS LIST" has been modified.

• Please void OC369 REVISED EDTION-C.

NOTE:

• This manual describes only service data of the indoor units.

• RoHS compliant products have <G> mark on the spec name plate.

• For servicing RoHS compliant products, refer to the RoHS PARTS LIST.

CONTENTS

1. TECHNICAL CHANGES

2. REFERENCE MANUAL

3. SAFETY PRECAUTION

4. PART NAMES AND FUNCTIONS

5. SPECIFICATIONS

6. NOISE CRITERION CURVES

7. OUTLINES AND DIMENSIONS

8. WIRING DIAGRAM REFRIGERANT SYSTEM DIAGRAM

9.

10. TROUBLE SHOOTING

11. SPECIAL FUNCTION

12. DISASSEMBLY PROCEDURE

13. PARTS LIST

.......................................................

14. RoHS PARTS LIST

......................................

.......................................

................................................

............................................

.......................................

.........................................

.............................................

........................

............................

.........................

........................

...........................

11

12

15

19 20

35

38

44

53

2 2

3 5 9

WIRED REMOTE

CONTROLLER

WIRELESS REMOTE

CONTROLLER

3 3 2 2 3

Revision : "14. RoHS PARTS LIST" has been modiﬁ ed on page 53.

Page Revise point Service Ref. Incorrect Correct

STRUCTUAL PARTS

PKA-A12/18GA(L)

R01 10Y 658 R01 08Y 658

1

2

R01 08Y 658 R01 10Y 658

53

No. 2

CORNER COVER

STRUCTUAL PARTS

No. 11

CORNER COVER

1 TECHNICAL CHANGES

PKA-A12GA

1 PKA-A12GA2

PKA-A18GA1 PKA-A18GA2 PKA-A24FA1 PKA-A24FA2 PKA-A30FA1 PKA-A30FA2 PKA-A36FA1 PKA-A36FA2 PKA-A12GAL1 PKA-A12GAL2 PKA-A18GAL1 PKA-A18GAL2 PKA-A24FAL1 PKA-A24FAL2 PKA-A30FAL1 PKA-A30FAL2 PKA-A36FAL1 PKA-A36FAL2

• Indoor controller board (I.B) has been changed (11. SPECIAL FUNCTION is added).

PKA-A12GA PKA-A12GA1 PKA-A18GA PKA-A18GA1 PKA-A24FA PKA-A24FA1 PKA-A30FA PKA-A30FA1 PKA-A36FA PKA-A36FA1 PKA-A12GAL PKA-A12GAL1 PKA-A18GAL PKA-A18GAL1 PKA-A24FAL PKA-A24FAL1 PKA-A30FAL PKA-A30FAL1 PKA-A36FAL PKA-A36FAL1

• Indoor controller board (I.B) has been changed.

2

REFERENCE MANUAL

2-1. OUTDOOR UNIT SERVICE MANUAL

Service Ref.

PUZ-A18/24/30/36/42NHA PUZ-A18/24/30/36/42NHA-BS PUY-A12/18/24/30/36/42NHA(1) PUY-A12/18/24/30/36/42NHA(1)-BS

PUZ-HA36NHA

2-2. TECHNICAL DATA BOOK

Series (Outdoor unit)

PUZ-A·NHA(-BS) PUY-A·NHA(-BS)

PUZ-HA36NHA

Service Manual No.

OC367

OCH426 OCB426

Data Book No.

OCS04

OCS12

2

3 SAFETY PRECAUTION

3-1. ALWAYS OBSERVE FOR SAFETY

Before obtaining access to terminals, all supply circuits must be disconnected.

3-2. CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R410A

Use new refrigerant pipes.

Make sure that the inside and outside of refrigerant 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.

Contamination inside refrigerant piping can cause deterioration of refrigerant oil etc.

Store the piping to be used indoors during installation and both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.)

If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.

Use ester oil, ether oil or alkylbenzene oil (small amount) as the refrigerant oil applied to flares and flange connections.

If large amount of mineral oil enters, that can cause deterioration of refrigerant oil etc.

Do not use refrigerant other than R410A.

If other refrigerant (R22 etc.) is used, chlorine in refrigerant 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.

Tools for R410A Gauge manifold Charge hose

Gas leak detector

Torque wrench

Flare tool Size adjustment gauge Vacuum pump adaptor

Electronic refrigerant charging scale

Handle tools with care.

If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.

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.

[1] Cautions for service

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

Do not use a charging cylinder.

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

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

3

[2] Additional refrigerant charge

When 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.)

Unit

Gravimeter

[3] Service tools

Use the below service tools as exclusive tools for R410A refrigerant.

No. Tool name Specifications

1 Gauge manifold · Only for R410A

· Use the existing fitting

· 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

specifications

. (UNF1/2)

4

4 PART NAMES AND FUNCTIONS

Indoor Unit

PKA-A12GA PKA-A18GA PKA-A12GAL PKA-A18GAL PKA-A12GA

1

PKA-A18GA1 PKA-A12GAL1 PKA-A18GAL1 PKA-A12GA2 PKA-A18GA2 PKA-A12GAL2 PKA-A18GAL2

Indoor Unit

PKA-A24FA PKA-A30FA PKA-A36FA PKA-A24FAL PKA-A30FAL PKA-A36FAL PKA-A24FA

1

PKA-A30FA1 PKA-A36FA1 PKA-A24FAL1 PKA-A30FAL1 PKA-A36FAL1 PKA-A24FA2 PKA-A30FA2 PKA-A36FA2 PKA-A24FAL2 PKA-A30FAL2 PKA-A36FAL2

Air intake

Guide vane

Airflow can be changed to horizontally by moving the guide vane to the left or right.

Filter

Air outlet

Air intake

Room air is suctioned here

.

Air outlet

Air intake grille

Auto vane

Filter

Removes dust and dirt from the intake air.

Air outlet

Air intake grille

Auto vane

Disperse airflow up and down as well as adjusts the angle of airflow direction.

5

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

MENU

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

Temperature setting 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 the lid

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 return operation number

Ventilation button ( Operation button)

To go to next operation number

Built-in temperature sensor

Wired remote controller

Once the controllers are set, the same operation mode can be repeated by simply pressing the ON/OFF button.

6

Wired remote controller

Display Section

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

Identifies the current operation

Shows the operating mode, etc. *Multilanguage display is available.

“Centrally Controlled” indicator

Indicates that operation from the remote controller has been prohibited by a master controller.

“Timer is Off” indicator

Indicates that the timer is off.

Temperature Setting

Shows the target temperature.

Day-of-Week

Shows the current day of the week.

Time/Timer Display

Shows the current time, unless the simple or Auto Off timer is set. If the simple or Auto Off timer is set, the time to be switched off is shown.

TIME SUN MON TUE WED THU FRI SAT TIMER

AFTER

ERROR CODE

°F°C

Hr

AFTER

°F°C

ONLY1Hr.

Up/Down Air Direction indicator

The indicator shows the direction of the outcoming airflow.

“One Hour Only” indicator

Displayed if the airflow is set to low or downward during COOL or DRY mode. (Operation varies according to model.) The indicator goes off in 1 hour, when the airflow direction also changes.

Room Temperature display

Shows the room temperature. The room temperature display range is 46–102°F. The display blinks if the temperature is less than 46°

Louver display

Indicates the action of the swing louver. Does not appear if the louver is not running.

(Power On indicator)

Indicates that the power is on.

ON

OFF

FUNCTION

FILTER

WEEKLY

SIMPLE

AUTO OFF

F

or 102°F or more.

“Sensor” indication

Displayed when the remote controller sensor is used.

“Locked” indicator

Indicates that remote controller buttons have been locked.

“Clean The Filter” indicator

To be displayed on when it is time to clean the filter.

Timer indicators

The indicator comes on if the corresponding timer is set.

Fan Speed indicator

Shows the selected fan speed.

Ventilation indicator

Appears when the unit is running in Ventilation mode.

Note:

L

“PLEASE WAIT” message This message is displayed for approximately 3 minutes when power is supplied to the indoor unit or when the unit is recovering from a power failure.

L

“NOT AVAILABLE” message This message is displayed if an invalid button is pressed (to operate a function that the indoor unit does not have). If a single remote controller is used to operate multiple indoor units simultaneously that are different types, this message will not be displayed as far as any of the indoor units is equipped with the function.

7

Wireless remote controller

CHECK

TEST RUN

display

Indicate that the unit is being checked or test-run.

MODEL SELECT

Blinks when model is selected.

display

Lights up while the signal is transmitted to the indoor unit when the button is pressed.

Temperature setting display

Indicates the desired temperature setting which is set.

OPERATION MODE display

OPERATION MODE display Indicates which operation mode is in effect.

display

The vertical direction of airflow is indicated.

display

Displays selected fan speed.

ON/OFF button

The unit is turned ON and OFF alternately each time the button is pressed.

FAN SPEED SELECT button

Changes the fan speed.

MODE SELECT button

Switches the operation mode between COOLING/DRY/FAN/HEATING and AUTO mode.

+In case the outdoor unit is cooling only

type, the heating and auto mode are not available.

COOL

DRY

AUTO

FAN

HEAT

RUN

MODEL SELECT

FAN

SWING

NOT AVAILABLE

TEST

CHECK

ON/OFF TEMP

FAN

MODE

CHECK

VAN E

LOUVER

TEST RUN

RESETSET CLOCK

°F °C

AMPMSTOP

AMPM

START

AUTO STOP

AUTO START

h

min

CLOCK display

Displays the current time.

TIMER display

Displays when in timer operation or when setting timer.

“” “ ” display

Displays the order of timer operation.

“ ” “ ” display

Displays whether timer is on or off.

button

Sets any desired room temperature.

TIMER CONTROL buttons

AUTO STOP (OFF timer): when this switch is set, the air conditioner will be autom at ically stopped at the preset time. AUTO START (ON timer): when this switch is set, the air conditioner will be automatically started at the preset time.

"h" and "min" buttons

Buttons used to set the “hour and minute” of the current time and timer settings.

CHECK-TEST RUN button

Performs an inspection check or test operation.

Do not use it for normal operation.

VANE CONTROL button

Changes the air flow direction.

LOUVER button

Changes left / right airflow direction. (Not available for this model.)

CLOCK button

RESET button

SET button

8

5

SPECIFICATIONS

Service Ref.

Power supply(phase, cycle, voltage) Max. Fuse Size Min. Circuit Ampacity External finish Heat exchanger Fan Fan(drive) % No. Fan motor output Fan motor

Airflow

(Low-Medium2-Medium1-High)

External static pressure

INDOOR UNIT

Operation control & Thermostat Noise level( Field drain pipe I.D. Dimensions

Weight

Service Ref.

Power supply(phase, cycle, voltage) Max. Fuse Size Min. Circuit Ampacity External finish Heat exchanger Fan Fan(drive) % No. Fan motor output Fan motor

External static pressure

INDOOR UNIT

Operation control & Thermostat Noise level(Low-High) Field drain pipe I.D. Dimensions

Weight

Low-Medium2-Medium1-High)

Low-Medium2-Medium1-High

Airflow(

W

D H

W

D H

F. L. A

*/min(CFM)

Pa(mmAq)

mm(in.) mm(in.) mm(in.) mm(in.)

kg(lbs)

F. L. A

*/min(CFM)

)

Pa(mmAq)

mm(in.) mm(in.) mm(in.) mm(in.)

kg(lbs)

kW

dB

kW

dB

PKA-A12GA

Single phase, 60Hz, 208/230V A A

Dry: 9-10-11-12(320-350-390-425)

Wet:8-9-10-11(290-315-350-380)

GA: Wired remote controller & built-in GAL: Wireless remote controller & built-in

PKA-A18GA

Single phase, 60Hz, 208/230V A A

Dry: 9-10-11-12(320-350-390-425)

Wet:8-9-10-11(290-315-350-380)

GA: Wired remote controller & built-in GAL:Wireless remote controller & built-in

(1)(2) / PKA-A12GAL(1)(2)

15

1

Munsell 0.70Y 8.59/0.97

Plate fin coil

Line flow (direct) % 1

0.030

0.33

0(direct blow)

36-38-41-43

20(13/16)

990(39)

235(9-1/4)

340(13-3/8)

16(35)

(1)(2) / PKA-A18GAL(1)(2)

15

1

Munsell 0.70Y 8.59/0.97

Plate fin coil

Line flow (direct) % 1

0.030

0.33

0(direct blow)

36-38-41-43

20(13/16)

990(39)

235(9-1/4)

340(13-3/8)

16(35)

Service Ref.

Power supply (phase, cycle, voltage) Max. Fuse Size Min. Circuit Ampacity External finish Heat exchanger Fan Fan (drive) % No. Fan motor output Fan motor

Low-High

Airflow (

External static pressure

INDOOR UNIT

Operation control & Thermostat Noise level(Low-High) Field drain pipe I.D. Dimensions

Weight

)

W

D H

A A

kW

F. L. A

*/min(CFM)

Pa(mmAq)

dB mm(in.) mm(in.) mm(in.) mm(in.)

kg(lbs)

PKA-A24FA

Single phase, 60Hz, 208/230V

FA:Wired remote controller & built-in FAL: Wireless remote controller & built-in

(1)(2) / PKA-A24FAL(1)(2)

15

1

Munsell 3.4Y 7.7/0.8

Plate fin coil

Line flow (direct) % 2

0.045

0.43

Dry: 15-20(530-705)

Wet:14-18(480-635)

0(direct blow)

39-45

20(13/16)

1,400(55-1/8)

235(9-1/4)

340(13-3/8)

24(53)

9

Service Ref.

Power supply (phase, cycle, voltage) Max. Fuse Size Min. Circuit Ampacity External finish Heat exchanger Fan Fan (drive) % No. Fan motor output Fan motor

Airflow (Low-High)

External static pressure

INDOOR UNIT

Operation control & Thermostat Noise level (Low-High) Field drain pipe I.D. Dimensions

Weight

W

D H

A A

kW

F. L. A

*/min(CFM)

Pa(mmAq)

dB mm(in.) mm(in.) mm(in.) mm(in.)

kg(lbs)

PKA-A30FA

Single phase, 60Hz, 208/230V

FA: Wired remote controller & built-in FAL: Wireless remote controller & built-in

(1)(2) / PKA-A30FAL(1)(2)

15

1

Munsell 3.4Y 7.7/0.8

Plate fin coil

Line flow (direct) % 2

0.045

0.43

Dry: 15-20(530-705)

Wet: 14-18(480-635)

0(direct blow)

39-45

20(13/16)

1,400(55-1/8)

235(9-1/4)

340(13-3/8)

24(53)

Service Ref.

Power supply (phase, cycle, voltage) Max. Fuse Size Min. Circuit Ampacity External finish Heat exchanger Fan Fan(drive) % No. Fan motor output Fan motor

Airflow (Low-High)

External static pressure

INDOOR UNIT

Operation control & Thermostat Noise level (Low-High) Field drain pipe I.D. Dimensions

Weight

W

D H

A A

kW

F. L. A

*/min(CFM)

Pa(mmAq)

dB mm(in.) mm(in.) mm(in.) mm(in.)

kg(lbs)

PKA-A36FA

Single phase, 60Hz, 208/230V

FA: Wired remote controller & built-in FAL: Wireless remote controller & built-in

(1)(2) / PKA-A36FAL(1)(2)

15

1

Munsell 3.4Y 7.7/0.8

Plate fin coil

Line flow (direct) % 2

0.070

0.52 Dry: 22-28(780-990) Wet:20-25(700-890)

0(direct blow)

46-49

20(13/16)

1,680(66-1/8)

235(9-1/4)

340(13-3/8)

28(62)

10

6 NOISE CRITERION CURVES

PKA-A12GA PKA-A12GAL PKA-A18GA PKA-A18GAL PKA-A12GA

1

PKA-A12GAL1 PKA-A18GA1 PKA-A18GAL1

90

80

70

60

50

40

30

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0dB=0.0002 μbar)

APPROXIMATE

20

THRESHOLD OF HEARING FOR CONTINUOUS NOISE

10

63 125 250 500 1000 2000 4000 8000

PKA-A12GA2 PKA-A12GAL2 PKA-A18GA2 PKA-A18GAL2

Medium1 Medium2

BAND CENTER FREQUENCIES, Hz

NOTCH

High

Low

SPL(dB)

43 41 38 36

LINE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

PKA-A24FA PKA-A30FA PKA-A24FAL PKA-A30FAL PKA-A24FA

1

PKA-A30FA1 PKA-A24FAL1 PKA-A30FAL1

90

80

70

60

50

40

30

OCTAVE BAND SOUND PRESSURE LEVEL, dB(0dB=0.0002 μbar)

APPROXIMATE

20

THRESHOLD OF HEARING FOR CONTINUOUS NOISE

10

63 125 250 500 1000 2000 4000 8000

PKA-A24FA2 PKA-A30FA2 PKA-A24FAL2 PKA-A30FAL2

NOTCH

High Low

BAND CENTER FREQUENCIES, Hz

SPL(dB)39LINE

45

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

PKA-A36FA PKA-A36FAL PKA-A36FA

PKA-A36FA2 PKA-A36FAL2

1

PKA-A36FAL1

90

bar)

μ

80

70

60

50

40

30

APPROXIMATE

20

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0dB=0.0002

THRESHOLD OF HEARING FOR CONTINUOUS NOISE

10

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

NOTCH

High Low

SPL(dB) LINE

49 46

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

UNIT

WALL

3.3ft

MICROPHONE

11

7

OUTLINES AND DIMENSIONS

INDOOR UNIT PKA-A12GA PKA-A18GA PKA-A12GAL PKA-A18GAL PKA-A12GA1 PKA-A18GA1 PKA-A12GAL1 PKA-A18GAL1 PKA-A12GA2 PKA-A18GA2 PKA-A12GAL2 PKA-A18GAL2

Unit :inch(mm)

Left side

Knockout hole for left piping Refrigerant pipe Drain pipe Wiring hole.

9-21/32(245)

13/16(21)

2-3/4(70)

Front view

2-3/8(60)

13-3/8(340)

2-3/32(53)

28-5/32(715) Air intake

13-3/8(340)

Air intake

Lower side

12-Louvers(manual)

3-1/8(79)

1-31/32(50)

Front view (the open-topped grille)

Filter grip

3-5/32(80)

39(990)

27-3/4(705) Air outlet

11-1/32(280) 9-3/16(233)

Air intake

8-27/32(225)

Auto vane

9-1/4(235)

6-5/16(160) 1-9/16(40)

2-3/4(70) 1-3/8(35)

3-1/8(80)

7-15/32(190)

15-9/16(395)15-3/4(400)

Right side

Air intake

7-25/32(198)

2-3/8(60)

9-1/4(235)

Knockout hole for under piping Refrigerant piping Drain pipe Wiring hole

2-3/8(60)

Service panel (Power supply access)

Wiring entrance holes

Less than 19/32(15)

9-21/32(245)

13/16(21)

Knockout hole for right piping Refrigerant pipe Drain pipe Wiring hole

2-3/4(70)

(Left side piping installation)

1-3/8(35)

Service space required around indoor unit

1-13/16(30) or more

1-31/32(50) or more

5-29/32(150) or more

MODEL 12/18

Liquid pipe

Gas pipe

*1 Sleeves are available on the market. *2 This size shows the lower end of through hole.

1/4 inch

1/2 inch

ø2-15/16(ø75)

7-3/32(180) or more

(Necessary clearance for unit installation)

Through-holeSleeve *1

ø2-15/16~ø3-5/32

(ø75~ø80)

Drain hose

Liquid pipe

1

2

Gas pipe

Right side

Less than 5-1/8(130)

22-7/8(581)

27-9/16(700) 6-1/32(153)

(Flexible hose total length 31-1/2(800))

17-11/16(449)

Details of installation plate

14-:9/16(:14)holes for bolts

49-:3/16(:5)holes for tapping screw

Left-rear piping hole

Knockout hole for left-rear piping

19-1/2(495)

14-3/16(360)

15-15/16(405)

R2-1/16(R52.5)

16-17/32(420)

11-13/16(300)

3/16(5)

5-5/16(135)

7-15/32(190)

9-21/32(245)

R2-1/16(R52.5)

Knockout hole for right-rear piping

9-1/16(230)

8-9/32(210)

1-11/32(34)

1(25)

1-5/16(33)

2-1/8(54)

3-3/8(86)

(Right side piping installation)

Installation plate balance point hole

Unit center

25/32(20)

2-15/16(75)

0

1-3/8(35)

3-3/4(95)

1-1/4(32)

R2-1/16(R52.5)

5-29/32(150)

0

1-7/32(31) 11-1/32(280)

8-1/16(205)

7-15/32(190)

6-11/16(170)

10-1/4(260)

12-19/32(320)

13-19/32(345)

R2-1/16(R52.5)

19-1/2(495)

Right-rear piping hole

16-23/32(425)

0

0 1-3/8(35)

2-5/32(55) 3-5/32(80)

5-1/8(130)

7-15/32(190)

9-1/16(230) 10-23/32(272) 12-7/32(310)

12-11/16(322)+1

12

INDOOR UNIT

o

PKA-A24FA PKA-A30FA PKA-A24FAL PKA-A30FAL PKA-A24FA1 PKA-A30FA1 PKA-A24FAL1 PKA-A30FAL1 PKA-A24FA2 PKA-A30FA2 PKA-A24FAL2 PKA-A30FAL2

Top side

Unit :inch(mm)

9-1/4(235) 9-1/4(235)

1-25/32(45)

Front view

42-29/32(1090) Air intake

43-11/16(1110) Drain hose

Auto vanes

44-3/32(1120)

A

Left side

Knockout hole for left piping

Drain hose for left-hand side piping

Lower side

13-3/8(340)

31/32(25)

21-23/32(552) Air outlet

Under panel(Removable at left-hand side piping)

Service space required around indoor unit

Air intake

Air

2-9/16(65)

1-15/32(37)

1-1/4(32)

outlet

9-27/32(250) or more

1-3/16(30)

1-31/32(50) or more

9-27/32(250) or more

Knockout hole for wiring

AB C

1-3/16(30)

1-17/32(39)

3-15/16(100)

5/32(4)

1-9/16(39)

1-15/32(37)

2-29/32(74)

3-27/32(98)

9-1/4(235)

1-25/32(45)

55-1/8(1400)

Wiring entrance holes

21-23/32(552) Air outlet

Knockout hole for under-piping Refrigerant pipe /Drain pipe

9-1/4(235)

Drain hose

Louvers(Manual)

1-3/16(30) or more

Less than 9-27/32(250)

Details of installation plate

Drainage range on left hand side

3-15/16(100)

1-17/32(39)

66-ø1/4(ø6) holes for tapping screws

2-29/32(74)

5/32(4)

9-7/16(240)

Wall fixture

1/2(13) 2-15/32(62.5)

Right side

9-1/4(235)

7-3/4(197)

Terminal blockTerminal block

2

1-5/16(34)

2-9/32(58)

1-7/16(36)

1-21/32(42)

1

15/16(24)

2-5/32(55)

4-23/32(120)

7-7/32(183)

B

Liquid pipe

Gas pipe

Sleeve*1 ø3-17/32

(ø90)

*1 Sleeves are available on the market.

Unit center

38-31/32(990)

13/32*3-19/32=(35-13/16) (10*91=(910))

35-7/16(900)

23/32(18)

C

Knockout hole for right piping

Less than 19/32(15)

Bolt

Drain hose

4-7/32(107)

4-3/8(111)

24/30MODEL

3/8 inch

5/8 inch

Through hole

ø3-17/32~ø3-15/16

(ø90~ø100)

17-29/32(455)

3-19/32(91)

Drainage range on right-hand side

9-21/32(245)

11-7/32(285)

3/4(19)

13/32(10)

1-3/16(30)1-3/16(30)

7-1/4(184)1-3/16(30)

1-5/32(29)

11-1/32(280)2-3/8(60)

3-1/8(80)

32-ø15/32(ø12) holes for bolts

13

8-27/32(225)

12-ø1/4(ø6) holes for tapping screws

9-7/16(240)

11-1/32(280) 12-3/8(314)

7-3/32(180)

24-1/32(610)

Range for left rear piping hole

3-17/32(90)

Rear piping h

INDOOR UNIT PKA-A36FA PKA-A36FAL PKA-A36FA PKA-A36FA2 PKA-A36FAL2

Top side

1 PKA-A36FAL1 Unit :inch(mm)

2-15/32(62.5)

Left side

9-1/4(235)

Front view

1-25/32(45)

9-1/4(235)

1-25/32(45)

53-15/16(1370) Air intake

9-1/4(235)

1-25/32(45)

A

13-3/8(340)

Knockout hole

for left piping

31/32(25)

Drain hose for left-hand side piping

Lower side

27-5/16(694) Air outlet

55-1/8(1400)

Auto vanes

Service space required around indoor unit

Air intake

9-1/4(235)

1-25/32(45)

66-1/8(1680)

Drain hose

Wiring entrance holes

43-11/16(1110) Drain hose

27-5/16(694) Air outlet

Louvers(Manual)

Under panel(Removable at left-hand side piping)

Knockout hole for under-piping Refrigerant pipe /Drain pipe

9-1/4(235)

Knockout hole for right piping

9-7/16(240)

1/2(13)

Right side

9-1/4(235)

7-3/4(197)

Terminal block

2

2-9/32(58)

1-5/16(34)

1-7/16(36)

1-21/32(42)

1

15/16(24)

2-5/32(55) 4-23/32(120)

7-7/32(183)

B

C

Less than 9/16(15)

Bolt

4-1/32(102)

4-3/8(111)

MODEL 36

Liquid pipe

Gas pipe

Sleeve*1 ø3-17/32

(ø90)

*1 Sleeves are available on the market.

3/8 inch

5/8 inch

Through hole

ø3-17/32~ø3-15/16

(ø90~ø100)

Air

1-31/32(50) or more

9-27/32(250) or more

Knockout hole for wiring

outlet

9-27/32(250) or more

ACB

1-3/16(30)

3-15/16(100)

5/32(4) 1-17/32(39)

1-17/32(39)

1-15/32(37)

2-29/32(74)

1-15/32(37)

1-1/4(32)3-27/32(98)

1-3/16(30)

2-9/16(65)

1-15/32(37)

2-29/32(74)

1-3/16(30) or more

Less than 5-29/32(150)

Drainage range on left hand side

3-15/16(100)

84-ø1/4(ø6) holes for tapping screws

5/32(4)

1-17/32(39)

41-ø15/32(ø12) holes for bolts

Unit outline

Wall fixture

11-5/8(295) 8-27/32(225)

14

Unit center

50(1270)

1/2*3-19/32=(46-9/16) (13*91=(1183))

23/32(18)

9-7/16(240) 7-3/32(180) 11-1/32(280) 12-3/8(314)

12-ø1/4(ø6) holes for tapping screws

35-7/16(900)

Drainage range on right-hand side

23-7/16(595)

29-17/32(750)

Range for left rear piping hole

9-21/32(245)

11-7/32(285)

3/4(19)

3-19/32(91)

13/32(10)

1-3/16(30) 7-1/4(184)

3-9/16(90)

1-5/32(29)

1-3/16(30)1-3/16(30)

11-1/32(280)

3-5/32(80)

2-3/8(60)

Rear piping hole

8

WIRING DIAGRAM

PKA-A12GA PKA-A18GA PKA-A12GAL PKA-A18GAL PKA-A12GA

1 PKA-A18GA1 PKA-A12GAL1 PKA-A18GAL1

[LEGEND]

SYMBOL NAME P. B I.B

INDOOR POWER BOARD

INDOOR CONTROLLER BOARD FUSE FUSE (6.3A/250V) ZNR VARISTOR CN2L CONNECTOR<LOSSNAY> CN32 CONNECTOR<REMOTE SWITCH> CN41 CONNECTOR<HA TERMINAL-A> CN51 CONNECTOR<CENTRALLY CONTROL> SW1 SWITCH <MODEL SELECTION>+See Table 1. SW2 SWITCH <CAPACITY CODE>+See Table 2. SWE

SWITCH<EMERGENCY OPERATION> X4 RELAY<FAN MOTOR> BCR

FAN CONTROL ELEMENT LED1 POWER SUPPLY<I.B>

POWER SUPPLY<R.B>

LED2

TRANSMISSION<INDOOR-OUTDOOR>LED3

P. B

CNDK (RED)

1 2

DC13.1V

CN2S

(WHT)

1 2

3

MF

1

2 3

C

SYMBOL NAME C CAPACITOR<FAN MOTOR> MF MV TB4

TB5,TB6

TH1

TH2

TH5

R.B

FAN MOTOR VANE MOTOR TERMINAL BLOCK<INDOOR/OUTDOOR CONNECTING LINE> TERMINAL BLOCK<REMOTE CONTROLLER TRANSMISSION LINE > ROOM TEMP.THERMISTOR <32°F/15kΩ, 77°F/5.2kΩ DETECT> PIPE TEMP.THERMISTOR/LIQUID <32°F/15kΩ, 77°F/5.2kΩ DETECT> COND./EVA.TEMP.THERMISTOR <32°F/15kΩ, 77°F/5.2kΩ DETECT>

WIRED REMOTE CONTROLLER BOARD

YLW

TB4

ORN

YLW ORN BRN

S1

S2

S3

+1

TO OUTDOOR UNIT

W.B

WIRELESS REMOTE CONTROLLER BOARD RECEIVING UNIT

RU BZ

BUZZER

LED1

LED<RUN INDICATOR >

LED2

LED<HOT ADJUST>

SW1

SWITCH<HEATING ON/OFF>

SW2

SWITCH<COOLING ON/OFF>

NAMESYMBOL

BLK

WHT

RED

I.B

1 3 5

FAN

(

)

WHT

BCR

SWE ON OFF

Refer to tables 1 and 2 for service PCB.

X4

SW2 SW1

Table 1

Service board

1 2 3 4 5

POWER

CNDK (RED)

SW1

WHT

RED

POWER

CND

(ORN)

LED3 LED2 LED1

INTAKE CN20

(

RED

1 2

Table 2

MODELS

PKA-

ON

A12GA(L)

OFF

YLW

ORN

BLK

WHT

BRN

ORN

1 31 31 3 1 2

POWER CN2D(WHT)

FUSE

ZNR

LIQUID CN21

(

)

WHT

1 2

TH2

Service board Service board

1 2 3 4 5

A-CONTROL CN3C(BLU)

CN41 CN2L

CN51 CN32

PIPE

REMOCON

CN29

CN22

(

)

(

BLK

BLU

1 2

TH5TH1

SW2

PKA-

ON

A18GA(L)

OFF

)

MODELS

VAN E CN6V

(

GRN

WIRELESS CN90

(

WHT

TB5

6

)

MV

)

2

TRANSMISSION WIRES DC12V

1

1 2 3 4 5

ON OFF

Please set the voltage using the remote controller. For the setting method, please refer to the indoor unit Installation Manual.

9

BZ

RU

RECEIVER

LED1 LED2 SW2 SW1

R.B

NOTES:

1. Since the outdoor side electric wiring may change, be sure to check the outdoor unit electric wiring for servicing.

2. Indoor and outdoor connecting wires have polarities, make sure to match terminal numbers (S1, S2, S3) for correct wiring.

3. Symbols used in wiring diagram above are, : Connector, : Terminal (block).

4. This diagram shows the wiring of Indoor and Outdoor connecting wires (specification of 230V), adopting superimposed system of power and signal.

+1. Use copper supply wires.

For A12/18GAL

CNB

W.B

1

TB6

2

For A12/18GA

15

PKA-A12GA2 PKA-A18GA2 PKA-A12GAL2 PKA-A18GAL2

[LEGEND]

SYMBOL P.B I.B

P.B

INDOOR POWER BOARD

INDOOR CONTROLLER BOARD FUSE FUSE (6.3A/250V) ZNR VARISTOR CN2L CONNECTOR<LOSSNAY> CN24 CONNECTOR<BACK-UP HEATING> CN30 CONNECTOR<LLC> CN32 CONNECTOR<REMOTE SWITCH> CN41 CONNECTOR<HA TERMINAL-A> CN51 CONNECTOR<CENTRALLY CONTROL> SW1 SWITCH <MODEL SELECTION>+See Table 1. SW2 SWITCH <CAPACITY CODE>+See Table 2. SWE

SWITCH<EMERGENCY OPERATION>

X4 RELAY<FAN MOTOR>

FAN CONTROL ELEMENT

BCR LED1 POWER SUPPLY<I.B>

CNSK (RED)

1

DC13.1V

3

CN2S

(WHT)

1

2

NAME

SYMBOL NAME

POWER SUPPLY<R.B>

LED2

C MF MV TB4

TB5,TB6

TH1

TH2

TH5

R.B

TRANSMISSION<INDOOR-OUTDOOR>LED3

CAPACITOR<FAN MOTOR> FAN MOTOR VANE MOTOR TERMINAL BLOCK<INDOOR/OUTDOOR CONNECTING LINE> TERMINAL BLOCK<REMOTE CONTROLLER TRANSMISSION LINE > ROOM TEMP.THERMISTOR

Ω, 77°F/5.2kΩ DETECT>

<32°F/15k PIPE TEMP.THERMISTOR/LIQUID

Ω, 77°F/5.2kΩ DETECT>

<32°F/15k COND./EVA.TEMP.THERMISTOR

Ω, 77°F/5.2kΩ DETECT>

<32°F/15k WIRED REMOTE CONTROLLER BOARD

Please set the voltage using the remote controller. For the setting method, please refer to the indoor unit Installation Manual.

SYMBOL

W.B

Table 2

MODELS

PKAA12GA(L)

WIRELESS REMOTE CONTROLLER BOARD RECEIVING UNIT

RU BZ

BUZZER

LED1

LED<RUN INDICATOR >

LED2

LED<HOT ADJUST>

SW1

SWITCH<HEATING ON/OFF>

SW2

SWITCH<COOLING ON/OFF>

NAME

Table 1

SW1

Service board

1 2 3 4 5

ON OFF

SW2

Service board Service board

1 2 3 4 5

ON OFF

MODELS

PKAA18GA(L)

1 2 3 4 5

ON OFF

YLW ORN

BRN

TB4

S1 S2 S3

+1

TO OUTDOOR UNIT

MF

M

1~

1

32

C

BLK

WHT

RED

I.B

FAN

(

)

WHT

5

1

3

BCR

SW2 SW1

SWE

ON OFF

Refer to tables 1 and 2 for service PCB.

POWER

CNDK

X4

(RED)

WHT

RED

11

3

POWER

CND

(ORN)

ZNR

U

YLW

LED3 LED2 LED1

CN24

(

YLW

INTAKE

CN20

)

(

)

RED

12

1

2121212

ttt

ORN

BLK

1

3

POWER

CN2D

(WHT)

FUSE

CN41

CN51

51

LIQUID

CN21

(

WHT

TH2

PIPE

CN29

)

(

BLK

TH5TH1

WHT

BRN

1

2

A-CONTROL

CN3C (BLU)

(

)

WHT

14

(

)

WHT

REMOCON

CN22

)

(

BLU

ORN

3

(

CN2L

RED

12

(

CN32

WHT

13

CN30

(

BLK

)

6

VANE CN6V (GRN)

)

1

6

1

)

WIRELESS

CN90 (WHT)

)

9

13

1

TRANSMISSION WIRES DC12V

2

TB5

M

MV

99

RU

RECEIVER

For A12/18GAL

CNB

BZ

LED1 LED2 SW2SW1

R.B

1 2

TB6

For A12/18GA

NOTES:

1. Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing.

2. Indoor and outdoor connecting wires are made with polarities, make wiring matching terminal numbers (S1, S2, S3).

3. Symbols used in wiring diagram above are, : Connector, : Terminal (block).

4. This diagram shows the wiring of Indoor and Outdoor connecting wires (specification of 230V), adopting superimposed system of power and signal. +1. Use copper supply wires.

[Self-diagnosis]

Please refer to technical manuals etc.

W.B

16

PKA-A24FA PKA-A30FA PKA-A36FA PKA-A24FAL PKA-A30FAL PKA-A36FAL PKA-A24FA

[LEGEND]

SYMBOL P.B I.B

FUSE FUSE (6.3A/250V) ZNR VARISTOR CN2L CONNECTOR<LOSSNAY> CN32 CONNECTOR<REMOTE SWITCH> CN41 CONNECTOR<HA TERMINAL-A> CN51 CONNECTOR<CENTRALLY CONTROL> SW1 SWITCH <MODEL SELECTION>+See Table 1. SW2 SWITCH <CAPACITY CODE>+See Table 2. SWE X4 RELAY<FAN MOTOR> BCR LED1 POWER SUPPLY<I.B> LED2

1 PKA-A30FA1 PKA-A36FA1 PKA-A24FAL1 PKA-A30FAL1 PKA-A36FAL1

INDOOR POWER BOARD INDOOR CONTROLLER BOARD

SWITCH<EMERGENCY OPERATION>

FAN CONTROL ELEMENT

POWER SUPPLY<R.B> TRANSMISSION<INDOOR-OUTDOOR>LED3

NAME

SYMBOL NAME C CAPACITOR<FAN MOTOR> MF MV TB4

TB5,TB6

TH1

TH2

TH5

R.B

FAN MOTOR VANE MOTOR TERMINAL BLOCK<INDOOR/OUTDOOR CONNECTING LINE> TERMINAL BLOCK<REMOTE CONTROLLER TRANSMISSION LINE> ROOM TEMP.THERMISTOR <32

°F/15kΩ, 77°F/5.2kΩ DETECT>

PIPE TEMP.THERMISTOR/LIQUID

°F/15kΩ, 77°F/5.2kΩ DETECT>

<32 COND./EVA.TEMP.THERMISTOR <32

°F/15kΩ, 77°F/5.2kΩ DETECT>

WIRED REMOTE CONTROLLER BOARD

W.B

WIRELESS REMOTE CONTROLLER BOARD RECEIVING UNIT

RU BZ

BUZZER

LED1

LED<RUN INDICATOR>

LED2

LED<HOT ADJUST>

SW1

SWITCH<HEATING ON/OFF>

SW2

SWITCH<COOLING ON/OFF>

NAMESYMBOL

P.B

CNDK (RED)

1

DC13.1V

2 3

MF

1

2 3

C

BLK

WHT

RED

I.B

1 3 5

FAN

(

)

WHT

SW2 SW1

ON OFF

X4

BCR

SWE ON OFF

Refer to tables 1 and 2 for service PCB.

Table 1

SW1

Service board

1 2 3 4 5

CN2S (WHT)

1 2

RED

POWER

CNDK

(RED)

LED3 LED2 LED1

Table 2

MODELS

PKAA24FA(L)

Please set the voltage using the remote controller. For the setting method, please refer to the indoor unit Installation Manual.

YLW

TB4

ORN

YLW ORN

BRN

WHT

POWER

CND

(ORN)

ZNR

INTAKE CN20

(

)

RED

1 2

YLW

ORN

FUSE

LIQUID CN21

(

WHT

1 2

BLK

WHT

POWER CN2D(WHT)

CN41 CN2L

CN51 CN32

PIPE CN29

)

(

)

BLK

1 2

TH2

TH5TH1

BRN

ORN

1 31 31 3 1 2

A-CONTROL CN3C(BLU)

REMOCON CN22

(

)

BLU

1 2

VANE CN6V

(

GRN

WIRELESS CN90

(

WHT

2

TB5

SW2

Service board Service board Service board

1 2 3 4 5

ON OFF

MODELS

PKAA30FA(L)

1 2 3 4 5

ON OFF

+

1

S1

TO

S2

OUTDOOR UNIT

S3

6

)

MV

)

TRANSMISSION WIRES DC12V

1

MODELS

PKAA36FA(L)

1 2 3 4 5

ON OFF

9

RU

RECEIVER

For A24/30/36FAL

CNB

BZ

LED1 LED2 SW2 SW1

W.B

R.B

1

TB6

2

For A24/30/36FA

NOTES:

1. Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing.

2. Indoor and outdoor connecting wires have polarities, make sure to match terminal numbers (S1, S2, S3) for correct wiring.

3. Symbols used in wiring diagram above are, : Connector, : Terminal (block).

4. This diagram shows the wiring of Indoor and Outdoor connecting wires (specification of 230V), adopting superimposed system of power and signal.

+1. Use copper supply wires.

17

PKA-A24FA2 PKA-A30FA2 PKA-A36FA2 PKA-A24FAL2 PKA-A30FAL2 PKA-A36FAL2

[LEGEND]

SYMBOL P.B I.B

P.B

INDOOR POWER BOARD

INDOOR CONTROLLER BOARD FUSE FUSE (6.3A/250V) ZNR VARISTOR CN2L CONNECTOR<LOSSNAY> CN24 CONNECTOR<BACK-UP HEATING> CN30 CONNECTOR<LLC> CN32 CONNECTOR<REMOTE SWITCH> CN41 CONNECTOR<HA TERMINAL-A> CN51 CONNECTOR<CENTRALLY CONTROL> SW1 SWITCH <MODEL SELECTION>+See Table 1. SW2 SWITCH <CAPACITY CODE>+See Table 2. SWE

SWITCH<EMERGENCY OPERATION> X4 RELAY<FAN MOTOR> BCR

FAN CONTROL ELEMENT LED1 POWER SUPPLY<I.B>

CNSK (RED)

1

DC13.1V

3

CN2S

(WHT)

1

2

NAME

Please set the voltage using the remote controller. For the setting method, please refer to the indoor unit Installation Manual.

MF

M

1~

SYMBOL NAME

POWER SUPPLY<R.B>

LED2

C MF MV TB4

TB5,TB6

TH1

TH2

TH5

R.B

TRANSMISSION<INDOOR-OUTDOOR>LED3

CAPACITOR<FAN MOTOR> FAN MOTOR VANE MOTOR TERMINAL BLOCK<INDOOR/OUTDOOR CONNECTING LINE> TERMINAL BLOCK<REMOTE CONTROLLER TRANSMISSION LINE > ROOM TEMP.THERMISTOR <32°F/15k

Ω

, 77°F/5.2kΩ DETECT>

PIPE TEMP.THERMISTOR/LIQUID

Ω

, 77°F/5.2kΩ DETECT>

<32°F/15k COND./EVA.TEMP.THERMISTOR <32°F/15k

Ω

, 77°F/5.2kΩ DETECT>

WIRED REMOTE CONTROLLER BOARD

YLW ORN

BRN

TB4

S1 S2 S3

SYMBOL

W.B

+1

TO OUTDOOR UNIT

WIRELESS REMOTE CONTROLLER BOARD RECEIVING UNIT

RU BZ

BUZZER

LED1

LED<RUN INDICATOR >

LED2

LED<HOT ADJUST>

SW1

SWITCH<HEATING ON/OFF>

SW2

SWITCH<COOLING ON/OFF>

Table 1

SW1

Service board

1 2 3 4 5

Table 2

MODELS

PKAA24FA(L)

MODELS

PKAA30FA(L)

MODELS

PKAA36FA(L)

NAME

ON OFF

SW2

Service board

1 2 3 4 5

Service board

1 2 3 4 5

Service board

1 2 3 4 5

ON OFF

1

32

C

BLK

WHT

RED

I.B

FAN

(

WHT

BCR

)

SWE

1

3

SW2 SW1

POWER

5

CNDK (RED)

X4

ON OFF

Refer to tables 1 and 2 for service PCB.

NOTES:

1. Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing.

WHT

RED

11

3

POWER

CND

(ORN)

ZNR

U

YLW

LED3 LED2 LED1

LIQUID

CN24

(

YLW

INTAKE

CN20

)

(

)

RED

12

1

2121212

ttt

ORN

BLK

WHT

1

3

POWER

CN2D

(WHT)

FUSE

CN41

CN51

51

PIPE

CN21

CN29

(

)

(

WHT

BLK

TH2

TH5TH1

BRN

1

2

A-CONTROL

CN3C (BLU)

(

)

WHT

14

(

)

WHT

REMOCON

CN22

)

(

)

BLU

ORN

3

(

CN2L

RED

12

(

CN32

WHT

13

CN30

(

BLK

6

)

6

VANE CN6V

(GRN)

1 1

)

WIRELESS

CN90

(WHT)

)

9

13

1

TRANSMISSION WIRES DC12V

2

TB5

M

MV

99

RU

RECEIVER

For A24/30/36FAL

BZ

LED1 LED2 SW2 SW1

R.B

TB6

For A24/30/36FA

2. Indoor and outdoor connecting wires are made with polarities, make wiring matching terminal numbers (S1, S2, S3).

3. Symbols used in wiring diagram above are, : Connector, : Terminal (block).

4. This diagram shows the wiring of Indoor and Outdoor connecting wires (specification of 230V), adopting superimposed system of power and signal. +1. Use copper supply wires.

CNB

W.B

1 2

[Self-diagnosis]

Please refer to technical manuals etc.

18

9

REFRIGERANT SYSTEM DIAGRAM

PKA-A12GA PKA-A18GA PKA-A24FA PKA-A30FA PKA-A36FA PKA-A12GAL PKA-A18GAL PKA-A24FAL PKA-A30FAL PKA-A36FAL PKA-A12GA1 PKA-A18GA1 PKA-A24FA1 PKA-A30FA1 PKA-A36FA

1

PKA-A12GAL1 PKA-A18GAL1 PKA-A24FAL1 PKA-A30FAL1 PKA-A36FAL PKA-A12GA2 PKA-A18GA2 PKA-A24FA2 PKA-A30FA2 PKA-A36FA

2

PKA-A12GAL2 PKA-A18GAL2 PKA-A24FAL2 PKA-A30FAL2 PKA-A36FAL

Strainer #50

Heat exchanger

Refrigerant GAS pipe connection (Flare)

Condenser/evaporator temperature thermistor

Room temperature thermistor (TH1)

Distributor with strainer #50

(TH5)

Refrigerant LIQUID pipe connection (Flare)

Pipe temperature thermistor/liquid (TH2)

Strainer #50

Refrigerant flow in cooling Refrigerant flow in heating

1

2

19

10 TROUBLESHOOTING

10-1. TROUBLESHOOTING

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 trouble reoccurrence at field are summarized in the table below. Check the contents below before investigating details.

Unit conditions at service

The trouble is reoccurring.

The trouble is not reoccurring.

Error code

Displayed

Not displayed

Logged

Not logged

Actions to be taken for service (summary)

Judge what is wrong and take a corrective action according to “SELF-DIAGNOSIS ACTION TABLE” (10-3).

Identify the cause of the trouble and take a corrective action according to “TROUBLESHOOTING BY INFERIOR PHENOMENA ” (10-4).

Consider 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

trouble occurred, and wiring related.

Reset error code logs and restart the unit after finishing service. There is no abnormality in electrical components, controller boards, and remote controller.

Recheck the abnormal symptom. Identify the cause of the trouble and take a corrective

action according to “TROUBLESHOOTING BY INFERIOR PHENOMENA ” (10-4). Continue to operate unit for the time being if the cause is not ascertained. There is no abnormality in electrical components, controller boards, remote controller etc.

20

10-2. MALFUNCTION-DIAGNOSIS METHOD BY REMOTE CONTROLLER

When a malfunction occurs to the air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop.

<Malfunction-diagnosis method at maintenance service>

[Procedure]

CHECK display

ON/OFF button

CHECK button

ON/OFF

MODE

CHECK

TEST RUN

SET

CHECK

FAN

VAN E

LOUVER

RESET

TEMP

AUTO STOP

AUTO START

CLOCK

min

h

Refrigerant address display

Temperature button

HOUR button

1. Press the CHECK button twice.

2. Press the temperature buttons.

3. Point the remote controller at the sensor on the indoor unit and press the HOUR button.

• "CHECK" lights, and refrigerant address "00" blinks.

• Check that the remote controller's display has stopped before continuing.

• Select the refrigerant address of the indoor unit for the self-diagnosis. Note: Set refrigerant address using the outdoor unit’s DIP switch (SW1). (For more information, see the outdoor unit installation manual.)

• If an air conditioner error occurs, the indoor unit's sensor emits an intermit tent buzzer sound, the operation lamp blinks, and the error code is output. (It takes 3 seconds at most for error code to appear.)

4. Point the remote controller at the sensor on the indoor unit and press the ON/OFF button.

• The check mode is cancelled.

To be continued to the next page.

21

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

Beeper sounds

OPERATION INDICATOR lamp blinking pattern

Beep

Self-check starts (Start signal received)

Beep Beep Beep Beep Beep Beep

1st2nd3

Off

Approx. 2.5 sec.On0.5 sec.On0.5 sec.On0.5 sec.

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

rd

0.5 sec.

th

n

On

Off

Approx. 2.5 sec.On0.5 sec.On0.5 sec.

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

1st2

nd

· · · Repeated

[Output pattern B] Only A-CONTROL

Beeper sounds

OPERATION INDICATOR lamp blinking pattern

Beep Beep Beep Beep Beep

1st2nd3

Off

Self-check starts (Start signal received)

Approx. 2.5 sec.OnApprox. 3 sec.On0.5 sec.On0.5 sec.On0.5 sec.On0.5 sec.

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

rd

th

n

Off

Approx. 2.5 sec.OnApprox. 3 sec.On0.5 sec.On0.5 sec.

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

Beep Beep

1st2

nd

· · · Repeated

[Output pattern A] Errors detected by indoor unit

Wireless remote controller

Beeper sounds/OPERATION

INDICATOR lamp blinks  Check code

Wired remote controller

Symptom Remark

(Number of times)

1P1

2

P2

P9 3E6,E7 4P4

5

P5

PA 6P6 7EE 8P8 9E4, E5

10

11

–

12 Fb

–

E0, E3 –E1, E2

[Output pattern B]

Wireless remote controller

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

Wired remote controller

Beeper sounds/OPERATION

INDICATOR lamp blinks  Check code

Intake sensor error Pipe (TH2) sensor error Pipe (TH5) sensor error Indoor/outdoor unit communication error Drain sensor error Drain pump error Forced compressor stop(due to water leakage abnormality) Freezing/Overheating protection operation Communication error between indoor and outdoor units

Pipe temperature error

Remote controller signal receiving error

–

Indoor unit control system error (memory error, etc.) Remote controller transmission error

Remote controller control board error

Symptom Remark

(Number of times)

1

2 3 4

5

6

7 8 9

10

11

12 13 14

E9

UP U3,U4 UF

U2

U1,Ud

U5 U8 U6 U7

U9,UH

– –

Others

*1 If the beeper does not sound again after the initial

the OPERATION INDICATOR lamp does not come on,

Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)

Compressor overcurrent interruption Open/short of outdoor unit thermistors Compressor overcurrent interruption (When compressor locked) Abnormal high discharging temperature/49C worked/

insufficient refrigerant Abnormal high pressure (63H worked)/Overheating

protection operation

Abnormal temperature of heatsink

Outdoor unit fan protection stop

Compressor overcurrent interruption/Abnormal of power module Abnormality of superheat due to low discharge temperature Abnormality such as overvoltage or voltage shortage and

abnormal synchronous signal to main circuit/Current sensor error

– –

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

2 beeps to confirm the self-check start signal was received and

there are no error records.

As for outdoor unit, refer to outdoor unit's service manual. For details, check the LED display of the outdoor controller board.

*2 If the beeper sounds 3 times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial 2 beeps to confirm

the self-check start signal was received, the specified refrigerant address is incorrect.

22

• On wireless remote controller The continuous buzzer sounds from receiving section of indoor unit.

Blink of operation lamp

• On wired remote controller

 Check code displayed in the LCD.

If the unit cannot be operated properly after the test run has been performed, refer to the following table to find out the cause.

•

Symptom

Wired remote controller LED 1, 2 (PCB in outdoor unit)

For about 2 minutes after power-on,operation

PLEASE WAIT

PLEASE WAIT → Error code

Display messages do not appear even when operation switch is turned ON (operation lamp does not light up).

On the wireless remote controller with condition above, following phenomena take place.

• No signals from the remote controller can be received.

• Operation lamp is blinking.

• The buzzer makes a short ping sound.

Note: Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)

For description of each LED (LED1, 2, 3) provided on the indoor controller, refer to the following table.

LED1 (power for microcomputer) Indicates whether control power is supplied. Make sure that this LED is

LED2 (power for remote controller)

LED3 (communication between indoor and outdoor units)

For about 2 minutes after power-on

Subsequent to about 2 minutes after power-on

After LED 1, 2 are lighted, LED 2 is

turned off, then only LED 1 is lighted.

(Correct operation)

Only LED 1 is lighted. →

Only LED 1 is lighted.

always lit. Indicates whether power is supplied to the remote controller.

This LED lights only in the case of the indoor unit which is connected to the outdoor unit refrigerant address “0”.

Indicates state of communication between the indoor and outdoor units. Make sure that this LED is always blinking.

LED 1, 2 blink.

→

LED 1 blinks twice,

LED 2 blinks once.

• of the remote controller is not possible due to system start-up. (Correct operation)

•Connector for the outdoor unit’s protection device is not connected.

•Reverse or open phase wiring for the outdoor unit’s power terminal block (L1, L2, GR)

•Incorrect wiring between indoor and outdoor units (incorrect polarity of S1, S2, S3)

•Remote controller wire short

Cause

23

10-3. SELF-DIAGNOSIS ACTION TABLE

Error Code

P1

P2

P4

P5

Abnormal

Room temperature thermistor (TH1)

1 The unit is in 3-minute resume preven-

tion mode if short/open of thermistor is detected. Abnormal if the unit does not reset normally after 3 minutes. (The unit returns to normal operation, if it has been reset normally.)

2 Constantly detected during cooling, dry-

ing, and heating operation.

Short: -90:(194˚F) or more Open: -40:(-40˚F) or less

Pipe temperature thermistor/Liquid (TH2)

1 The unit is in 3-minute resume prevention mode if short/open of thermistor is detected. Abnormal if the

unit does not reset normally after 3 minutes. (The unit returns to normal operation, if it has been reset normally.)

2 Constantly detected during cooling, drying, and heating (except defrosting)

operation.

Short: 90:(194˚F) or more Open: -40:(-40˚F) or less

Drain sensor (DS)

1 Suspensive abnormality, if short/open

of thermistor is detected for 30 seconds continuously.

Turn off compressor and indoor fan.

Short/open is detected for 30 seconds con-

2

tinuously during suspensive abnormality.

(The unit returns to normal operation, if

it has been reset normally.)

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 or room temperature is short/open temperature.

• During drain pump operation

Malfunction of drain pump (DP)

1 Suspensive abnormality, if thermistor of drain sensor heats itself and temperature rises slightly. Turn off compressor and indoor fan. 2 Drain pump is abnormal if the condition

above is detected during suspensive abnormality.

3 Constantly detected during drain pump

operation.

point and detection method

1 Defective thermistor characteristics

2 Contact failure of connector

3 Breaking of wire or contact

failure of thermistor wiring

4 Defective indoor controller

1 Defective thermistor

characteristics

2 Contact failure of connector

3 Breaking of wire or contact

failure of thermistor wiring 4 Defective refrigerant circuit is

-40:(-40˚F) or less.

5 Defective indoor controller board

1 Defective thermistor

characteristics

2 Contact failure of connector

3 Breaking of wire or contact

failure of drain sensor wiring

4 Defective indoor controller board

1 Malfunction of drain pump 2 Defective drain

Clogged drain pump Clogged drain pipe

3 Attached drop of water at the

4 Defective indoor controller board

Note: Refer to the manual of outdoor unit for the details of display such as F, U, and other E.

Cause

(CN20) on the indoor controller board (Insert failure)

board

(CN21) on the indoor controller board (Insert failure)

causing thermistor temperature of 90:(194˚F) or more or

(CN31) on the indoor controller board (Insert failure)

drain sensor

• Drops of drain trickles from lead wire.

• Clogged filter is causing wave of drain.

Countermeasure

1–3 Check resistance value of thermistor.

0: (32˚F) 10:(50˚F) 20:(68˚F) 30:(86˚F) 40:(104˚F)

• • • • • • • • • • •

• • • • • • • • • • • • •

• • • • • • • • • • • •

15.0k"

9.6k"

6.3k"

4.3k"

3.0k"

If you put force on (draw or bend) the lead wire with measuring resistance value of thermistor breaking of wire or contact failure can be detected. 2 Check contact failure of connector (CN20)

on the indoor controller board. Refer to 10-7. Turn the power on again and check restart after inserting connector again.

4 Check room temperature display on remote

controller.

Replace indoor controller board if there is abnor-

mal difference with actual room temperature.

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

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 10-7. Turn the power on and check restart after inserting connector again.

4 Check pipe <liquid> temperature with remote

controller in test run mode. If pipe <liquid> temperature is extremely low (in cooling mode) or high (in heating mode), refrigerant circuit may have defect.

5 Check pipe <liquid> temperature with remote

controller in test run mode. If there is extreme difference with actual pipe <liquid> temperature, replace indoor controller board.

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

1–3 Check resistance value of thermistor.

0: (32˚F) 10:(50˚F) 20:(68˚F) 30:(86˚F) 40:(104˚F)

• • • • • • • • • • • •

• • • • • • • • • •

6.0k"

3.9k"

2.6k"

1.8k"

1.3k"

2 Check contact failure of connector (CN31)

on the indoor controller board. Refer to 10-7. Turn the power on again and check restart after inserting connector again.

4 Replace indoor controller board if drain pump operates with the line of drain sensor

connector CN31-1 and 2 is short-circuited, and abnormality reappears.

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

1 Check if drain pump 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 sensor

connector CN31-1 and 2 is short-circuited and abnormality reappears.

Refer to 10-7.

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

24

Error Code

Abnormal

Freezing/overheating protection is working

1 Freezing protection (Cooling mode)

The unit is in 6-minute resume prevention mode if pipe <liquid or condenser/evaporator> temperature stays under

-15:(5˚F) for 3 minutes, 3 minutes after the compressor started. Abnormal if it stays under -15:(5˚F) for 3 minutes again within 16 minutes after 6-minute resume prevention mode.

point and detection method

Cause

(Cooling or drying mode)

1 Clogged filter (reduced airflow) 2 Short cycle of air path 3 Low-load (low temperature)

operation out of the tolerance range

4 Defective indoor fan motor

• Fan motor is defective.

• Indoor controller board is defective.

5 Defective outdoor fan control 6 Overcharge of refrigerant 7 Defective refrigerant circuit

(clogs)

Countermeasure

(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

(FAN) on the indoor controller board.

WThe indoor controller board should be normal when voltage of AC 208/230V is detected while fan motor is connected. Refer to 10-7.

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

circuit.

P6

P8

2 Overheating protection (Heating mode)

The units is in 6-minute resume prevention mode if pipe <condenser / evaporator> temperature is detected as over 70:(158˚F) after the compressor started. Abnormal if the temperature of over 70:(158˚F) is detected again within 10 minutes after 6-minute resume prevention mode.

Pipe temperature

<Cooling mode> Detected as abnormal when the pipe temperature is not in the cooling range 3 minutes after compressor start and 6 minutes after the liquid or condenser/evaporator pipe is out of cooling range. Note 1) It takes at least 9 minutes to

detect.

Note 2) Abnormality P8 is not detected in

drying mode. Cooling range TH: Lower temperature between liquid pipe

TH1: Intake temperature <Heating mode> When 10 seconds have passed after the compressor starts operation and the hot adjustment mode has finished, the unit is detected as abnormal when condenser/ evaporator pipe temperature is not in heating range within 20 minutes.

:-3 deg C[-5.4deg F]]

temperature (TH2) and condenser/ evaporator temperature (TH5)

(TH-TH1)

(Heating mode)

1 Clogged filter (reduced airflow) 2 Short cycle of air path 3 Overload (high temperature)

operation beyond the tolerance range

4 Defective indoor fan motor

• Fan motor is defective.

• Indoor controller board is defective.

5 Defective outdoor fan control 6 Overcharge of refrigerant 7 Defective refrigerant circuit

(clogs)

8

Bypass circuit of outdoor unit

is defective.

1 Slight temperature difference

between 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 circuit

2 Converse connection of extension pipe (on plural units

connection)

3 Converse wiring of indoor/ outdoor unit connecting wire

(on plural units connection)

4 Defective detection of indoor

room temperature and pipe <condenser / evaporator>

temperature thermistor 5 Stop valve is not opened completely.

(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

(FAN) on the indoor controller board.

WThe indoor controller board should be normal when voltage of AC 208/230V is detected while fan motor is connected. Refer to 10-7.

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

circuit.

1~4 Check pipe <liquid or condenser /

evaporator> temperature with room

temperature 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.

Conduct temperature check with outdoor controller circuit board after connecting

(

‘A-Control Service Tool(PAC-SK52ST)’.

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

)

Note 3) It takes at least 27 minutes to

detect abnormality.

Note 4) It excludes the period of defrosting

(Detection restarts when defrosting mode is over)

Heating range

:3 deg C[5.4deg F][

(TH5-TH1)

25

Error Code

P9

E0

or

E4

E3

or

E5

Abnormal point and detection method

Pipe temperature thermistor / Condenser-Evaporator (TH5)

1 The unit is in 3-minute resume protec-

tion mode if short/open of thermistor is detected. Abnormal if the unit does not get back to normal within 3 minutes. (The unit returns to normal operation, if it has been reset normally.)

2 Constantly detected during cooling,

drying, and heating operation (except defrosting)

Short: 90:(194˚F) or more Open: -40:(-40˚F) or less

Remote controller transmission error(E0)/signal receiving error(E4)

1 Abnormal if main or sub remote control-

ler cannot receive any transmission normally from indoor unit of refrigerant address “0” for 3 minutes.

(Error code : E0) 2 Abnormal if sub-remote controller could

not receive for any signal for 2 minutes. (Error code: E0)

1 Abnormal if indoor controller board

can not receive any data from remote controller board or normally from other indoor controller board for 3 minutes. (Error code: E4)

2 Indoor controller board cannot receive

any signal from remote controller for 2 minutes. (Error code: E4)

Remote controller transmission error(E3)/signal receiving error(E5)

1 Abnormal if remote controller could not

find blank of transmission path for 6 seconds and could not transmit.

(Error code: E3) 2 Remote controller receives transmitted

data at the same time, compares the

data, and when detecting it, judges different data to be abnormal 30 continuous times. (Error code: E3)

1 Abnormal if indoor controller board could

not find blank of transmission path. (Error code: E5)

2 Indoor controller board receives trans-

mitted data at the same time, compares

the data,and when detecting it, judges

different data to be abnormal 30 continuous times. (Error code: E5)

Cause

1 Defective thermistor characteristics 2 Contact failure of connector

(CN29) on the indoor controller board (Insert failure)

3 Breaking of wire or contact failure of thermistor wiring 4 Temperature of thermistor is

90:(194˚F) or more or -40:

(-40˚F) or less caused by

defective refrigerant circuit.

5 Defective indoor controller

board

1 Contact failure at transmission

wire of remote controller

2 All remote controllers are set

as “sub” remote controller. In this case, E0 is displayed on remote controller, and E4 is displayed at LED (LED1, LED2) on the outdoor controller circuit board.

3 Miswiring of remote controller 4 Defective transmitting receiving

circuit of remote controller

5 Defective transmitting receiving

circuit of indoor controller board of refrigerant address “0”

6 Noise has entered into the

transmission wire of remote controller.

1 2 remote controller are set as

“main.” (In case of 2 remote controllers)

2 Remote controller is connected

with 2 indoor units or more.

3 Repetition of refrigerant

address

4 Defective transmitting receiving

circuit of remote controller

5 Defective transmitting receiving

circuit of indoor controller board

6 Noise has entered into trans-

mission wire of remote controller.

Countermeasure

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 10-7.

Turn the power on and check restart after

inserting connector again. Operate in test run mode and check pipe

4

<condenser / evaporator> temperature with outdoor controller circuit board. If pipe <condenser / evaporator> temperature is extremely low (in cooling mode) or high (in heating mode), refrigerant circuit may have defect.

5 Operate in test run mode and check pipe

<condenser / evaporator> temperature with

outdoor control circuit board. If there is exclusive difference with actual pipe <condenser / evaporator> temperature

replace indoor controller board. There is no abnormality if none of above

comes within the unit. Turn the power off and on again to operate.

In case of checking pipe temperature with outdoor controller circuit board, be sure to connect A-control service

(

tool (PAC-SK52ST).

1 Check disconnection or looseness of indoor

unit 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 cable o 3 or more.)

• The number of connecting indoor units: max. 16 units

• The number of connecting remote controller: max. 2 units

When the above-mentioned problem 1~3 are not seen. 4 Diagnose remote controllers.

a) When “RC OK” is displayed,

remote controllers have no problem. Turn the power off, and on again to check. If abnormality generates again, replace indoor 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 replacing

indoor controller board in group control, the indoor controller board of address “0” may be abnormal.

1 Set a remote controller to main, and the

other to sub.

2 Remote controller is connected with only 1

indoor 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. Turn the power off, and on again to check. When becoming abnormal again, replace

indoor controller board. b)When “RC NG” is displayed, replace

remote controller. c)When “RC E3” or “ERC 00-66” is displayed,

noise may be causing abnormality.

)

26

Error Code

E6

E7

Fb

E1

or

E2

Abnormal point and detection method

Indoor/outdoor unit communication error (Signal receiving error)

1 Abnormal if indoor controller board cannot receive any signal normally for 6

minutes after turning the power on.

2 Abnormal if indoor controller board cannot receive any signal normally for 3

minutes.

3 Consider the unit as abnormal under

the following condition: When 2 or more

indoor units are connected to 1 outdoor unit, indoor controller board cannot receive a signal for 3 minutes

from outdoor controller circuit board, a

signal which allows outdoor controller

circuit board to transmit signals.

Indoor/outdoor unit communication error (Transmitting error)

Abnormal if “1” receiving is detected 30 times continuously though indoor controller board has transmitted “0”.

Indoor controller board

Abnormal if data cannot be read normally from the nonvolatile memory of the indoor controller board.

Remote controller control board

1 Abnormal if data cannot be read nor-

mally from the nonvolatile memory of the remote controller control board.

(Error code: E1)

2 Abnormal if the clock function of remote

controller cannot be operated normally.

(Error code: E2)

Cause

1 Contact failure, short circuit or,

miswiring (converse wiring) of indoor/outdoor unit connecting wire

2 Defective transmitting receiving

circuit of indoor controller board

3 Defective transmitting receiving

circuit of indoor controller board

4 Noise has entered into indoor/

outdoor unit connecting wire.

1 Defective transmitting receiving

circuit of indoor controller board

2 Noise has entered into power

supply.

3 Noise has entered into outdoor

control wire.

1 Defective indoor controller

board

1 Defective remote controller 1 Replace remote controller.

* Check LED display on the outdoor control

circuit board. (Connect A-control service tool, PAC-SK52ST.)

For EA-EC item, refer to outdoor unit service

manual.

1 Check disconnection or looseness of indoor/

outdoor unit connecting wire of indoor unit or

outdoor unit. Check all the units in case of twin indoor unit system. 2-4 Turn the power off, and on again to check.

If abnormality generates again, replace

indoor controller board or outdoor controller circuit board. * Other indoor controller board may have defect in case of twin indoor unit system.

1-3 Turn the power off, and on again to check.

If abnormality generates again, replace indoor controller board.

1 Replace indoor controller board.

Countermeasure

PA (2502) (2500)

Forced compressor stop (due to water leakage abnormality)

When the intake temperature subtracted

1

with liquid pipe temperature is less than

-10:(14˚F), drain sensor er it is soaked in the water or not at the interval of 90 seconds.

start operating when the drain sensor detects to be soaked in the water.)

2 The unit has a water leakage abnormality when the following conditions, a and b,

are satisfied while the above-mentioned detection is performed. a) The drain sensor detects to be

soaked in the water 10 times in a row.

b) The intake temperature subtracted

with liquid pipe temperature is detected to be less than -10:(14˚F) for a total of 30 minutes. (When the drain sensor detects to be NOT soaked in the water, the detection record 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.

detects

wheth-

(Drain pump will

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 trikles along lead wire.

· Drain water waving due to filter clogging

6 Extension piping connection difference at twin system

7 Miswiring of indoor/ outdoor connecting at twin system

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

1 Check the drain pump.

2 Check whether water can be drained.

3 Check the resistance of the drain sensor.

4 Check the connector contact failure.

5 Check the drain sensor leadwire mounted.

Check the filter clogging.

6 Check the piping connection.

7 Check the indoor/ outdoor connecting wires.

8 Check the room temperature display of

remote controller. Check the indoor liquid pipe temperature display of outdoor controller board.

27

10-4. TROUBLESHOOTING BY INFERIOR PHENOMENA

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

Phenomena

(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 208/230V is not supplied to indoor

unit.

4 Defective indoor power board

5 Defective indoor controller board

(For the separate indoor/outdoor unit power sup-

ply system)

1 Power supply of 208/230V AC is not supplied to

indoor unit.

2 The connectors of the optional replacement kit are

not used.

3 Defective indoor controller board

4 Defective indoor power board

Cause

Countermeasure

1 Check the voltage of outdoor power supply terminal block (L1,L2).

• When AC 208/230V is not detected, check the power wiring to outdoor unit and the breaker.

• When AC 208/230V is detected,

check 2 (below).

2 Check the voltage between outdoor terminal block S1 and S2.

• When AC 208/230V is not detected,

—check the fuse on outdoor controller

circuit board.

—check the wiring connection.

• When AC 208/230V is detected,

check 3 (below).

3 Check the voltage between indoor terminal

block S1 and S2.

• When AC 208/230V is not detected, check indoor/outdoor unit connecting wire for miswiring.

• When AC 208/230V is detected,

check 4 (below).

4 Check voltage output from CN2S on indoor

power board (DC13.1V). Refer to 10-7-1.

• 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 between

indoor controller board and indoor power board. Check the fuse on indoor controller board. If no problems are found, indoor controller board is defective.

1 Check the voltage of indoor power supply

terminal block (L1,L2).

• When AC208/230V is not detected,

check the power supply wiring.

• When AC208/230V 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 referring to installation manual of an optional kit.

• When there is no problem in the meth-

od of connecting the connectors, check

3 (below).

3 Check voltage output from CNDK on

indoor controller board.

• When AC208/230V is not detected,

—check the fuse on indoor controller board. —check the wiring connection between

indoor power supply terminal block and CND on indoor controller board.

• When AC208/230V is detected, check

4 (below).

4 Check voltage output from CN2S on

indoor power board.

• When no voltage output, check the

wiring connection between CNDK on indoor controller board and CNSK on indoor power board.

If no problem are found, indoor power

board is defective.

• When DC12.5~13.7V is detected, check

the wiring connection between CN2S on indoor power board and CN2D on indoor power board.

If no problem are found, indoor control-

ler board is defective.

28

Phenomena

(1)LED2 on indoor controller board is off.

(2)LED2 on indoor controller board is blinking.

(3)Upward/downward vane performance failure

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

Cause

• 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”.)

•

When LED1 on indoor controller board is also blinking.

Connection failure of indoor/outdoor unit connecting wire

• When LED1 is lit. 1 Miswiring of remote controller wires

Under indoor unit system, 2 indoor

together.

2 Refrigerant address for outdoor unit is wrong or not

set. Under grouping control system, there are some units whose refrigerant address is 0.

3 Shortcut of remote controller wires 4 Defective remote controller

1 The vane is not downward during defrosting and heat

preparation and when the thermostat is OFF in HEAT

mode. (Working of COOL protection function) 2 Vane motor does not rotate.

• Defective vane motor

• Breaking of wire or connection failure of connector

• Up/downward vane setting is “No vanes”.

3 Upward/downward vane does not work.

• The vane is set to fixed position.

units are wired

Countermeasure

1 Check again the setting of refrigerant

address for outdoor unit. Set 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.

Check indoor/outdoor unit connecting wire for connection failure.

1 Check the connection of remote con troller wires in case of twin indoor unit

system. When 2 or more indoor units are

wired in one refrigerant system, connect

remote controller wires to one of those

units. 2 Check the setting of refrigerant address

in 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 the shortcut 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.

1 Normal operation (The vane is set to

horizontal regardless of remote control.)

2 Check 2 (left).

• Check the vane motor. (Refer to “How to check the parts”.)

• Check for breaking of wire or connection failure of connector.

• Check “Up/down vane setting”. (Unit function selection by remote controller).

3 Normal operation (Each connector on

vane motor side is disconnected.)

.

(4)Receiver for wireless remote controller

1 Weak batteries of wireless remote controller

2 Contact failure of connector (CNB) on wireless

remote controller board(Insert failure)

3 Contact failure of connector (CN90) on indoor con-

troller board(Insert failure)

4 Contact failure of connector between wireless remote

controller board and indoor controller board

29

1 Replace batteries of the wireless remote

controller.

2~4 Check contact failure of each connector. If no problems are found in connector,

replace indoor controller board.

When the same trouble occurs even if

indoor controller board is replaced,

replace wireless remote controller

board.

10-5. EMERGENCY OPERATION

10-5-1. When wireless remote controller has troubles or its battery is exhausted

1. Emergency operation is available in such a case using emergency operation switch equipped next to the receiver of indoor unit.

2. To start operation

• Cooling Operation·······Press (Cooling) switch.

• Heating Operation·······Press (Heating) switch.

wWhen the unit starts operating, the operation lamp is lit.

Emergency operation switch (cooling)

Emergency operation switch (heating)

Receiver

Operation lamp

+Emergency operation will be performed as follows.

Mode

Set temperature

Fan speed

Airflow direction

3. To stop operation

• Press either emergency operation switch (cooling/heating).

Cooling

24, 75F

High

Horizontal (30deg)

Heating

24, 75F

High

Downward (70deg)

10-5-2. When wired remote controller or indoor unit microcomputer has troubles

1. If other defects are not found 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;

· Indoor fan high speed operation

2. For emergency operation of cooling or heating When emergency operation for COOL or HEAT, setting of the switch (SWE) in the indoor controller board and outdoor unit

emergency 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 protection 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. Otherwise, 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.

30

10-6. HOW TO CHECK THE PARTS PKA-A12/ 18GA PKA-A24/ 30/ 36FA PKA-A12/ 18GAL PKA-A24/ 30/ 36FAL PKA-A12/ 18GA

1 PKA-A24/ 30/ 36FA1 PKA-A12/ 18GAL1 PKA-A24/ 30/ 36FAL1

PKA-A12/ 18GA2 PKA-A24/ 30/ 36FA2 PKA-A12/ 18GAL2 PKA-A24/ 30/ 36FAL2

Parts name Check points

Room temperature thermistor (TH1)

Pipe temperature thermistor (TH2)

Condenser/evaporator temperature thermistor (TH5)

Fan motor (MF)

Relay connector

1

Red

White

2

3

Black

Protector OFF:125$5 ON :79$15 (A12/ 18GA(L) only)

OFF:130$5 ON :80$20 (A24/ 30/ 36FA(L) only)

Vane motor (MV)

Orange



Red



Pink



M

Yellow Brown Blue



Disconnect the connector then measure the resistance with a tester. (At the ambient temperature 10(50°F)~30(86°F))

Normal

4.3k~9.6k

Abnormal

Open or short

(Refer to Thermistor Characteristic graph.)

Measure the resistance between the terminals with a tester. (Winding temperature 20(68°F))

1

2

3

Motor terminal

or

Relay connector

Red–Black

White–Black

PKA-A12, 18GA(1)(2)

PKA-A12, 18GAL(1)(2)

141.2

131.5

Normal

PKA-A24, 30FA(1)(2)

PKA-A24, 30FAL(1)(2)

107.4

97.7

Measure the resistance between the terminals with a tester. (At the ambient temperature 20(68°F)~30(86°F))

Connector

Normal

Brown–Yellow

Brown–Blue

Red–Orange

186~214

Red–Pink

PKA-A36FA(1)(2)

PKA-A36FAL(1)(2)

Abnormal

Open or short

Abnormal

Open or short

69.7

95.5

Thermistor for lower temperature

Room temperature thermistor(TH1) Pipe temperature thermistor(TH2) Condenser/evaporator temperature thermistor(TH5)

Thermistor R

0=15k ± 3%

Fixed number of B=3480 ± 2%

t(:):Rt=15exp { 3480( ) }

1

273+t

T(˚F):Rt=15exp { 3480( ) }

273+

0: (32˚F) 15k 10: (50˚F) 9.6k 20: (68˚F) 6.3k 25: (77˚F) 5.4k 30: (86˚F) 4.3k 40:(104˚F) 3.0k

50

40

30

1

273

1

T-32

1.8

1

273

20

Resistance (k)

10

0

-20-10 0 1020304050

-4 -14 32 50 68 86 104122°F Temperature

31

10-7. TEST POINT DIAGRAM

10-7-1. Indoor controller board PKA-A12GA PKA-A18GA PKA-A24FA PKA-A30FA PKA-A36FA

PKA-A12GAL PKA-A18GAL PKA-A24FAL PKA-A30FAL PKA-A36FAL PKA-A12GA1 PKA-A18GA1 PKA-A24FA1 PKA-A30FA1 PKA-A36FA PKA-A12GAL1 PKA-A18GAL1 PKA-A24FAL1 PKA-A30FAL1 PKA-A36FAL PKA-A12GA2 PKA-A18GA2 PKA-A24FA2 PKA-A30FA2 PKA-A36FA PKA-A12GAL2 PKA-A18GAL2 PKA-A24FAL2 PKA-A30FAL2 PKA-A36FAL

LED1 Power supply (I.B)

CN2D Connect to the

indoor power board (CN2S)(12.5~13.7V DC)

CN3C Transmission (Indoor/outdoor) (0~24V DC)

CNDK Connect to the indoor

power board (CNSK)

(208/230V AC)

FUSE (6.3 A 250 V)

CND Power supply input (208/230V AC)

CNP Drain-pump output

(DP)

(208/230V AC)

LED2 Power supply (R.B)

1

2

CN22 Connect to the terminal block(TB5) (Remote controller connecting wire) (10.4~14.6V DC)

CN30 (Only GA(L) Connector(LLC)

CN20 Room temperature thermistor (TH1)

CN21 Pipe temperature thermistor/Liquid (TH2)

CN29 Condenser/evaporator temperature thermistor (TH5)

LED3 Transmission (Indoor/outdoor)

CN31 Drain sensor (DS)

CN90 Connect to the wireless remote controller board (CNB)

CN6V Vane motor output (MV)

CN41 Connector (HA terminal-A)

2, FA(L)2)

SWE Emergency operation

FAN Fan motor output

32

CN51 Centrally control

CN24 (Only GA(L) Connector(Back-up heating)

CN32 Remote switch

CN2L Connector (LOSSNAY)

Jumper wire J41, J42 Pair number setting with wireless remote controller

SW2 Capacity setting

SW1 Model setting

2, FA(L)2)

10-7-2. Indoor power board PKA-A12GA PKA-A12GAL PKA-A18GA PKA-A18GAL PKA-A24FA PKA-A24FAL PKA-A30FA PKA-A30FAL PKA-A36FA PKA-A36FAL

PKA-A12GA1 PKA-A12GAL1 PKA-A18GA1 PKA-A18GAL1 PKA-A24FA1 PKA-A24FAL1 PKA-A30FA1 PKA-A30FAL1 PKA-A36FA1 PKA-A36FAL1

CN2S Connect to the indoor controller board (CN2D) between 1 to 3 12.6-13.7V DC (Pin1 (+))

PKA-A12GA2 PKA-A12GAL2 PKA-A18GA2 PKA-A18GAL2 PKA-A24FA2 PKA-A24FAL2 PKA-A30FA2 PKA-A30FAL2 PKA-A36FA2 PKA-A36FAL2

CNSK Connect to the indoor controller board (CNDK) between 1 to 3 208/230V AC

33

10-8. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE

Each function is controlled by the dip switch and the jumper wire on control P.C. board. SW1 and SW2 are equipped only for service parts. Model setting and capacity setting are memorized in the nonvolatile memory of the control P.C. board of the unit.

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

Jumper wire

SW1

SW2

J41 J42

Functions

Model settings

Capacity settings

Pair number setting with wireless remote controller

Setting by the dip switch and jumper wire

For service board

PKA-A12,18GA(1)(2) PKA-A12,18GAL(1)

PKA-A24,30,36FA(1) PKA-A24,30,36FAL(1)

MODELS

PKA-A12GA PKA-A12GAL

PKA-A18GA PKA-A18GAL

PKA-A24FA PKA-A24FAL

PKA-A30FA PKA-A30FAL

PKA-A36FA PKA-A36FAL

Wireless remote

controller setting

0 1 2

3 ~ 9

(1)

(2)

(1)

(2)

(1)

(2)

(1)

(2)

(1)

(2)

(1)

(2)

(1)

(2)

(1)

(2)

1 2 3 4 5

Service board

1 2 3 4 5

Control PCB setting

J41 J42

ON OFF

Remarks

<Initial setting> Wireless remote controller: 0 Control PCB: (for both J41 and J42) Four pair number settings are supported. The pair number settings of the wireless remote controller and indoor control PCB (J41/J42) are given in the table on the left. (' ' in the table indicates the jumper wire is disconnected.)

JP1

Unit type setting

Indoor

JP3

controller board type setting

Model

Without TH5

With TH5

Indoor controller board type

For product

Service parts

JP1

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

JP3

34

11

SPECIAL FUNCTION

11-1. ROTATION FUNCTION(AND BACK-UP FUNCTION, 2ND STAGE CUT-IN FUNCTION)

11-1-1. Operation

(1) Rotation function(and Back-up function) Outline of functions

· Operating the unit of main and sub alternately according to the interval setting. (Rotation function) wThe setting of main/sub unit depends on the refrigerant address.(The setting of dip switch on the outdoor unit)

Refrigerant address"00" Main unit Refrigerant address"01" Sub unit

· If an error occurrs to one unit, the other unit starts.(Back-up function)

System constraint

· This function is available only by the grouping control system(INDOOR UNIT : OUTDOOR UNIT=1:1) of 2 refrigerant group.(Refer to Fig 1)

· It is necessary to connect remote controller crossover wiring to between units(Wireless remote controller is unusable) and to assign refrigerant address to each unit.(Dip switch on the outdoor unit…Refrigerant address 00/01)

Operation pattern

[Back-up function only]··· Request code number "312"

Start operation

Main

unit IC-1

Sub unit IC-2

[Rotation function] & [Back-up function]··· Request code number "313~318"

Start operation

Main

unit IC-1

Sub unit IC-2

(Ex:When the request code number is "313", each unit operates alternately in daily cycle.)

Run

Stop

Main Sub Main Sub Main Sub

Run

Stop

1~28 days 1~28 days

Error occurred on main unit Main Sub

Abnormal condition

Run

Error occurred on main unit

Stop

Run

Stop Run

Abnormal condition

Fig 1

OC: Outdoor unit IC: Indoor unit RC: Wired remote controller

Refrigerant address "00"

Main unit

2

(2) 2nd stage cut-in function

Outline of functions

· Quantity of operating units is controlled according to the room temperature and set point.

· When room temperature becomes more than set point, standby unit starts.(2 units running )

· When room temperature falls below set point -4:(7.5°F), standby unit stops.(1 unit running)

System constraint

· This function is available only in rotation operation(or back-up) and cooling mode.

OC-1

IC-1

RC

3(2)

Refrigerant address "01"

OC-2

Sub

3(2)

unit

IC-2

2

[2nd stage cut-in function]··· Request code number "322~324"

Start operation Sub unit start operation

Main

unit

IC-1

Sub

unit

IC-2

Room temp. Set point

Run

Stop StopRun

Room temp. < Set point -4(7.5°F) Sub unit stop

35

11-1-2.How to perform the operation of rotation function(Back-up funcion, 2nd stage cut-in function)

Set by wired remote controller.(Maintenance monitor)

NOTE

It is necessary to set the same content to both main unit and sub unit. Every time indoor controller board is replaced for servicing, it is necessary to set each function.

(1) Request Code List

Rotation setting

Setting No.

(Request code)

No.1 (310) No.2 (311) No.3 (312) No.4 (313) No.5 (314) No.6 (315) No.7 (316) No.8 (317) No.9 (318)

Setting contents

Monitoring the request code of current setting.

Rotation and Back-up OFF (Normal group control operation)

Back-up function only

Rotation ON (Alternating interval = 1day) and back-up function

Rotation ON (Alternating interval = 3days) and back-up function

Rotation ON (Alternating interval = 5days) and back-up function

Rotation ON (Alternating interval = 7days) and back-up function

Rotation ON (Alternating interval = 14days) and back-up function

Rotation ON (Alternating interval = 28days) and back-up function

Initial

setting

2nd stage cut-in setting

Setting No.

(Request code)

No.1 (320) No.2 (321) No.3 (322) No.4

(323)

No.5 (324)

Setting contents

Monitoring the request code of current setting.

Cut-in function OFF

Cut-in function ON (Set point = Set temp. +4(7.2°F))

Cut-in function ON (Set point = Set temp. +6(10.8°F))

Cut-in function ON (Set point = Set temp. +8(14.4°F))

Initial

setting

36

(2) Setting method of each function by wired remote controller





B: Refrigerant address C: Data display area D: Request code display area















1. Stop running the air-conditioner(

2. Press the button (

TEST



).



) for 3 seconds so that [Maintenance mode] appears on the screen (at  ).

After a while, [00] appears in the refrigerant address number display area.(at

3. Press the button (

CHECK



) for 3 seconds to switch to [Maintenance monitor].





)

Note) It is not possible to switch to [Maintenance monitor] during data request in maintenance mode (i.e., while“----” is blinking) since no buttons are operative.

[----] appears on the screen (at (The display (at



) now allows you to set a request code No.)



) when [Maintenance monitor] is activated.



4. Press the [TEMP ( and )] buttons (

[Screen]

  

5. Press the [CLOCK ( and )] buttons (

) to select the desired refrigerant address.



) to set the desired request code No.(“311~318”, “321~324”,

“331~335”)

6. Press the button (

FILTER If the above operations are set correctly, request code number will appear in data display area.(at [Example) When the request code number is "311", [311] appears on the screen.(at



) to perform function setting.



)



)]

[Refererence] You can check the request code number of current setting by setting the request code number (“310”, “320” or “330”) and press the button.(

FILTER

[Example) When the current setting is "Setting No.2(Request code 311)", [311] appears on the screen.(at

7. To return to normal mode, press the button (



)



)]



ON/OFF

).

11-2. BACK-UP HEATING FUNCTION(CN24)

11-2-1. Operation

Outline of functions

The back-up heater signal is sent out according to the temperature difference between indoor room temperature and set temperature. This function is available only in heating operation.

11-2-2. How to connect

When connecting to the connector CN24 of the indoor unit, use PAC-SE56RA-E(optional parts).

Temperature difference

(Z=Set temp. - Room temp.)

1

2

3

Z 0(°F)

0 < Z < 2.5(4.5°F)

2.5(4.5°F) Z

Z 0 2.5°C(4.5°F)

Back-up heater

signal output

OFF

Keeping condition

ON

OFF

37

12

DISASSEMBLY PROCEDURE

PKA-A12GA PKA-A18GA PKA-A12GA1 PKA-A18GA1 PKA-A12GA2 PKA-A18GA2 PKA-A12GAL PKA-A18GAL PKA-A12GAL1 PKA-A18GAL1 PKA-A12GAL2 PKA-A18GAL2

OPERATION PROCEDURE PHOTOS & ILLUSTRATION

1. REMOVING THE LOWER SIDE OF THE INDOOR UNIT FROM THE INSTALLATION PLATE.

(1) Remove the left / right corner box of the indoor unit. (2) Hold and pull down the lower and both ends of the indoor

unit, and remove the ▼ section from the square hole.

(Refer to the figure 2.1) Or remove the front panel and push the ▼ section down by using hexagonal wrench ,etc. from the front side. (Refer to the figure 2.2). (3) Unhook the top of the indoor unit from the back plate catch.

Figure 2.2

Down

Square hole

Up

Figure 1

Figure 2.1

Square hole

Hook

2. REMOVING THE FRONT PANEL.

(1) Open the front grille. (2) Remove the terminal block cover with a screw. (3) Remove the 3 screw caps then remove the 3 set screws. (4) After removing the lower side of the front panel a little,

remove it as pulling toward upper.

3. REMOVING THE INDOOR CONTROLLER BOARD.

(1) Remove the terminal block cover. (2) Remove the front panel. (see the photo 1) (3) Remove the electrical parts box(2 screws). (4) Remove the electrical parts box cover(1 screw). (5) Disconnect the connector on the controller board and remove the controller board by pulling up the hook of the controller case. wFor smooth works, hang the side hooks of the electrical parts box on the hook of the motor cover. (see the photo 3)

Figure 3

Terminal block cover

Photo 1

Front panel

Photo 2

Motor cover

Electrical parts box hook w

Photo 3

Front grille

Set screw

Electrical parts box

38

Hook

Control board

Controller case

Electrical parts box

OPERATION PROCEDURE

PHOTOS & ILLUSTRATION

4. REMOVING THE POWER BOARD

(1) Remove the front panel. (see the photo 1) (2) Remove the electrical parts box(2 screws). (see the photo 2) (3) Disconnect the whole connector in the control board. (4) After lifting the controller case with pressing its convex section, remove the controller case and the control board simultaneously. (see the photo 3) (5) Disconnect the connector in the power board. (6) Remove the power board.

5. REMOVING THE VANE MOTOR

(1) Disconnect the connector CN6V on the indoor controller board. (2) Remove the 2 screws of the vane motor, disconnect the lead wire and remove the vane motor from the shaft.

6. REMOVING THE THERMISTOR (1) Removing the room temperature thermistor TH1.

1Disconnect the connector CN20<red> on the indoor controller board. 2Remove the room temperature thermistor from the holder. (2) Removing the pipe temperature thermistor TH2. 1Disconnect the connector CN21<white> on the controller board. 2Remove the pipe temperature thermistor set to the pipe. (3) Removing the indoor coil temperature thermistor TH5. 1Disconnect the connector CN29<black> on the indoor con- troller board. 2Remove the gas pipe thermistor set to the pipe.

Photo 4

Photo 5

Nozzle assemble

Vane motor

Photo 6

Pipe temperature thermistor (TH2)

Room temperature thermistor (TH1)

Power board

Electrical parts box

Set screws

Lead wire

Condenser /evaporator temperature thermistor (TH5)

Electrical parts box

7. REMOVING THE NOZZLE ASSEMBLE

(1) Disconnect the connector CN6V on the controller board. (2) Disconnect the lead wire of the vane motor. (3) Remove the corner cover. (4) Pull the drain hose out from the nozzle assembly. (5) Unhook the hook of the lower nozzle assembly and pull the nozzle assembly toward you, then remove the nozzle assembly by sliding it down.

8. REMOVING THE ELECTRICAL PARTS BOX

(1) Remove the terminal block cover. (2) Disconnect the connector <yellow> of the wireless remote controller board. (3) Remove the front panel. (see the photo 1) (4) Disconnect the vane motor connector. (5) Disconnect the fan motor connector from the fan motor. (6) Disconnect the connector <yellow> of the heater. (only PKH). (7) Remove the liquid(TH2) / gas(TH5) pipe thermistors. (see the photo 6) (8) Remove the electrical parts box (2screws).

39

Photo 7

Nozzle assemble

Photo 8

Pipe temperature thermistor

Hook

Drain hose

Corner cover

Fan motor connector

Vane motor connector

Electrical parts box

OPERATION PROCEDURE PHOTOS & ILLUSTRATION

9. REMOVING THE FAN MOTOR (1) Remove the terminal block cover.

(2) Disconnect the connector <yellow> of the wireless remote controller board. (3) Remove the front panel. (see the photo 1) (4) Remove the electrical parts box. (see the photo 8) (5) Remove the nozzle assemble. (see the photo 7) (6) Remove the fan motor leg fixing 3 screws. (7) Unscrew the set screws by using hexagonal wrench and remove it by sliding the fan motor to right. (8) Remove the 4 screws and remove the motor cover from the fan motor leg.

10. REMOVING THE LINE FLOW FAN

(1) Remove the terminal block cover. (2) Remove the front panel. (see the photo 1) (3) Remove the electrical parts box. (see the photo 8) (4) Remove the nozzle assemble. (see the photo 7) (5) Remove the fan motor. (see the photo 9) (6) Remove the pipe fixture with 2 screws. (see the photo12) (7) Remove the left / right screws of the heat exchanger and pull the left-hand side up. (8) Remove the 2 screws by sliding it toward you remove the fixture(fixing bearing). w w When resetting the fan to the fan motor. Locate and fix the shaft after installing the fan.

11. REMOVING THE HEAT EXCHANGER

(1) Remove the terminal block cover. (2) Disconnect the connector <yellow> of the wireless remote

(3) Remove the front panel. (see the photo 1) (4) Remove the electrical parts box. (see the photo 8) (5) Remove the corner box. (6) Remove the nozzle assemble. (see the photo 7) (7) Remove the 2 screws and the pipe fixture. (8) Remove the 2 screws and heat exchanger.

12. REMOVING THE SIGNAL RECEIVING P.C. BOARD FOR (PKA-A12GAL(1), PKA-A18GAL(1))

(1) Remove the terminal block cover. (2) Disconnect the connector <yellow> for the wireless remote controller. (3) Remove the front panel. (see the photo 1) (4) Remove the 2 screws and signal receiving P.C. board cover. (5) Remove the signal receiving P.C. board.

The fan motor is removable first,when the fan removing is hard.

controller board.

Photo 9

Set

screw

Photo 10

Motor cover

Fan motor

Photo11

Heat exchanger

Set screws

Fixture(fixing bearing)

Photo 12

Set screw

Pipe fixture

Photo 13

Set screws

Signal receiving P.C. board cover

Photo 14

Motor cover

Fan motor

screws

motor leg

Heat exchanger

Set screw

Front panel

Signal receiving P.C. board

40

e

PKA-A24FA PKA-A30FA PKA-A24FAL PKA-A30FAL PKA-A36FA PKA-A36FAL PKA-A24FA

1 PKA-A30FA1 PKA-A24FAL1 PKA-A30FAL1 PKA-A36FA1 PKA-A36FAL1

PKA-A24FA2 PKA-A30FA2 PKA-A24FAL2 PKA-A30FAL2 PKA-A36FA2 PKA-A36FAL2

OPERATING PROCEDURE PHOTOS&ILLUSTRATION

1. Removing the lower side of the indoor unit from the installation plate

(1) Remove the 2 screws. Hang the indoor unit hangers to the catches on the instal-

lation plate.

Metal fixture

Screws

Figure 1

Hanger of indoor unit

Catch of installation plate

2. Removing the right side panel

(1) Remove the 2 screws of the right side panel:one on the

bottom and the other on the upper right-hand side. (2) Disconnect the connector from the adaptor case. (3) Sliding the right side panel to the right, pull it out toward

you.

3. Removing the indoor controller board

(1) Remove the right side panel. (2) Remove the screw of the electrical parts box cover, and

remove the cover. (3) Disconnect the connectors on the indoor controller board. (4) To unhook the catches on the right-hand side of the indoor

controller board, pull the left-hand side toward you and lift

up the cover to the right. Then the indoor controller board

can be removed.

4. Removing the electrical parts box

(1) Remove the right side panel. (2) Remove the screw of the electrical parts box cover, and

remove the cover. (3) Remove the room temperature thermistor and the condens-

er / evaporator temperature thermistor. (4) Disconnect the vane motor connector on the indoor control-

ler board. (5) Remove the 2 screws of the electrical parts box. (6) Disconnect the connector of the heater lead wire connector. (7) Disconnect the connector of the fan motor lead wire. (8) Remove the electrical parts box.

Figure 2

Terminal cover

Electrical parts box cover

Photo 1

Indoor controller board

Photo 2

Room temperature thermistor

Connector

Indoor controller board

Right side pan

Connector

Electrical parts box cover

Catches

Condenser/ evaporator temperature thermistor

Screws

Electrical parts box

41

OPERATING PROCEDURE PHOTOS&ILLUSTRATION

(9) Remove the screws of the indoor controller board case,

and pull out the indoor controller board case.

Then the indoor power board, the fan motor capacitor

and the heater relay can be serviced.

5. Removing the vane motor

(1) Remove the right side panel. (2) Remove the screw of the electrical parts box cover, and

remove the cover.

(3) Remove the 2 screws of the vane motor, and remove the

motor from the shaft.

(4) Disconnect the vane motor connector on the indoor control-

ler board.

Photo 3

Capacitor

Indoor controller board case

Photo 4

Vane motor

Relay

Indoor power board

Electrical parts box

Screws

Indoor controller board

6. Removing the intake grilles

(1) Remove the right side panel. (2) To remove the left side panel, remove the screw on the bot-

tom and the screw on the upper left-hand side. (See Figure

3.)

1. Press up this side of the left side panel to unhook the catch on the panel from the catch on the unit.

2. Slide the left side panel to the left to remove the panel.

Note: Fix the unit to the metal fixture securely. (3) Remove the air filters. (4) Hold and press the centre cover to remove. (5) Remove the screws of the grills. (6) Pull the lower side of the grille toward you and slide the

upper side to the right to remove the grilles.

7. Removing the drain pan

(1) Remove the left and right side panels. (2) Remove the grilles. (3) Remove the electrical parts box cover. (4) Loosen the drain hose band to remove. (5) Remove the 3 screws of the drain pan, and slide the drain

pan toward you to remove.

Figure 3

Photo 5

Left side panel

Photo 6

Catch on the left side panel

Catch on the unit

Slide to the right

Screws for grills

Drain pan

Grills

Drain hose band

Screws

Drain hose

42

OPERATING PROCEDURE PHOTOS

8. Removing the line flow fan and the fan motor

(1) Remove the left and right side panels. (2) Remove the grills. (3) Remove the electrical parts box. (4) Remove the drain pan. (5) Loosen the screw that fixes the line flow fan to the fan

motor. (See Photo 7. )

(6) Remove the 4 screws of the motor fixture, and remove the

fan motor and the motor fixture at a time (See Photo 8.)

(7) Remove the screws of the left and right motor supports,

and remove the motor supports and the fan motor. (See Photo 9.)

(8) Remove the 2 screws on the left and right sides of the heat

exchanger, and pull the bearing support toward you. (See Photo 11.)

(9) Remove the screw of the centre support, and remove the

support. (See Photo 10. )

(10)

Pull the left-hand side of the heat exchanger toward you,

and remove the line flow fan.

Photo 11

Heat exchanger

Bearing support

Photo 7

Photo 8

Fan motor

Photo 9

Screw

Motor support

Line flow fan

Fan motor

Screw

Fan motor

Screw

Motor fixture

Screw

Lineflow fan

Photo 10

Photo 12

Heat exchanger

Line flow fans

ScrewCentre support

Heater element

Motor support

Heater fixing screws

43

13 PARTS LIST (non-RoHS compliant)

ELECTRICAL PARTS PKA-A12GA PKA-A12GAL PKA-A18GA PKA-A18GAL

1

4

3

5

2

6

9

10

No.

10

11

12

13

14

15

16

17

Parts No. Parts Name

1

T7W H28 480

2

R01 E22 114

3

R01 07Y 102

4

R01 005 103

5

R01 07Y 106

6

T7W A00 675

7

R01 07Y 524

8

R01 07Y 527

9

R01 07Y 530

R01 09Y 038

R01 07Y 038

R01 07Y 059

R01 E04 223

R01 E03 317

R01 07Y 135

R01 07Y 105

T7W E23 762

12

7

8

11

10

13

Specifications

HEAT EXCHANGER

LINE FLOW FAN

BEARING MOUNT

SLEEVE BEARING

BEARING SUPPORT

FAN GUARD

DRAIN PLUG

DRAIN HOSE

NOZZLE

GUIDE VANE

ARM

VANE MOTOR

WIRERLESS ADAPTER CONTROLLER BOARD

MOTOR COVER

RUBBER MOUNT

FAN MOTOR

PM4V30-K

14

1

17

16

15

12,18GA

Q'ty/set

PKA-A

1

4

10

2

1

2

1

27

25

24

12, 18GAL

1

4

10

2

1

2

1

26

23

18

(Drawing No.)

20

19

Remarks

22

21

Wiring

Diagram

Symbol

MV

W.B

MF

Recommended

Q'ty

Continued to the next page

44

From the previous page

No.

18

19

20

21

22

23

24

25

26

27

Parts No. Parts Name

T7W E11 716

R01 E13 246

T7W E11 255

T7W E46 310

T7W E24 313

R01 556 246

R01 E58 202

T7W E05 202

R01 E02 202

T7W E06 130

Specifications

TERMINAL BLOCK

CAPACITOR

3P(L1,L2,GR)

3P(S1, S2, S3)

2.0 × 440V

INDOOR CONTROLLER BOARD

POWER BOARD

TERMINAL BLOCK

2P(1,2)

CONDENSER / EVAPORATOR TEMPERATURE THERMISTOR

ROOM TEMPERATURE THERMISTOR

PIPE TEMPERATURE THERMISTOR

MOTOR SUPPORT

Q'ty/set

PKA-A

12, 18GA 12, 18GAL

1

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

TB2

TB4

C

I.B

P. B

TB5

TH5

TH1

TH2

Recommended

Q'ty

45

ELECTRICAL PARTS PKA-A24FA PKA-A30FA PKA-A24FAL PKA-A30FAL

26

25

1

2

23

24

3

4

22

20

21

5

19

7

18617

14

15

13

16

9

8

10

11

12

No.

1

2

3

4

5

6

7

8

9

10

11

12

Part No.

R01 Z61 102

R01 E23 114

T7W H25 480

T7W H26 480

T7W E13 529

R01 12G 621

R01 12G 063

R01 12G 002

R01 KV5 527

R01 E02 223

R01 E03 317

T7W E03 255

T7W E46 310

BEARING MOUNT

LEFT LINEFLOW FAN

HEAT EXCHANGER

DRAIN PAN

CENTER COVER

JOINT SHAFT

AUTO VANE

DRAIN HOSE

VANE MOTOR

WIRELESS ADAPTER CONTROLLER BOARD

CAPACITOR

INDOOR CONTROLLER BOARD

Part Name

Specification

2.5 440V

24FA 30FA

1

2

1

46

Q'ty/set

PKA-A

24FAL30FAL

1

2

1

(Drawing No.)

1

2

1

Remarks

Continued to the next page

Wiring

Diagram

Symbol

MV

W.B

C

I.B

Recom-

mended

Q'ty

From the previous page

No.

13

14

15

16

17

18

19

20

21

22

23

24

25

26

Part No.

T7W E24 313

R01 556 246

R01 E13 246

T7W E11 716

T7W E12 202

R01 E34 202

R01 E02 202

T7W B00 762

R01 12G 105

R01 E04 115

R01 KV5 102

R01 12G 103

T7W B02 675

R01 005 103

Part Name

INDOOR POWER BOARD

TERMINAL BLOCK

ROOM TEMPERATURE THERMISTOR

CONDENSER / EVAPORATOR

TEMPERATURE THERMISTOR

PIPE TEMPERATURE THERMISTOR

FAN MOTOR

RUBBER MOUNT

RIGHT LINEFLOW FAN

BEARING MOUNT

SLEEVE BEARING

FAN GUARD

SLEEVE BEARING

Specification

2P(1, 2)

3P(S1, S2, S3)

3P(L1, L2, GR)

PN4N45-K

24FA

1

2

1

2

1

Q'ty/set

PKA-A

30FA

1

2

1

2

1

24FAL

1

2

1

2

1

30FAL

1

2

1

2

1

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

P. B

TB5

TB4

TB2

TH1

TH5

TH2

MF

Recom-

mended

Q'ty

47

ELECTRICAL PARTS PKA-A36FA PKA-A36FAL

26

1

25

2

23

24

3

4

25

22

20

21

15

14

13

5

6

19

16

18

10

17

11 129

7

8

No.

1

2

3

4

5

6

7

8

9

10

11

12

Part No.

R01 Z61 102

R01 16G 114

T7W H27 480

T7W E14 529

R01 12G 621

R01 12G 063

R01 16G 002

R01 KV5 527

R01 E05 223

R01 E03 317

T7W E03 255

T7W E46 310

BEARING MOUNT

LEFT LINEFLOW FAN

HEAT EXCHANGER

DRAIN PAN

CENTER COVER

JOINT SHAFT

AUTO VANE

DRAIN HOSE

VANE MOTOR

WIRELESS ADAPTER CONTROLLER BOARD

CAPACITOR

INDOOR CONTROLLER BOARD

Part Name

Specification

2.5F 440V

48

Q'ty/set

PKA-A

36FA 36FAL

1

2

1

2

1

Remarks

(Drawing No.)

Continued to the next page

Wiring

Diagram

Symbol

MV

W.B

C

I.B

Recom-

mended

Q'ty

From the previous page

No.

13

14

15

16

17

18

19

20

21

22

23

24

25

26

Part No. Part Name Specification

T7W E24 313

R01 556 246

R01 E13 246

T7W E11 716

T7W E12 202

R01 E34 202

R01 E02 202

T7W B01 762

R01 16G 105

R01 16G 115

R01 KV5 102

R01 12G 103

T7W B03 675

R01 005 103

INDOOR POWER BOARD

TERMINAL BLOCK

ROOM TEMPERATURE THERMISTOR

CONDENSER / EVAPORATOR

TEMPERATURE THERMISTOR

PIPE TEMPERATURE THERMISTOR

FAN MOTOR

RUBBER MOUNT

RIGHT LINEFLOW FAN

BEARING MOUNT

SLEEVE BEARING

FAN GUARD

SLEEVE BEARING

2P(1, 2)

3P(S1, S2, S3)

3P(L1,L2,GR)

PN4N70-K

Q'ty/set

PKA-A

36FA 36FAL

1

2

1

2

1

2

1

2

1

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

P. B

TB5

TB4

TB2

TH1

TH5

TH2

MF

Recommended

Q'ty

49

STRUCTURAL PARTS PKA-A12GA PKA-A18GA PKA-A12GAL PKA-A18GAL

4

5

6

1

2

3

12

11

No.

10

12

13

14

15

16

Parts No.

R01 07Y 808

1

R01 09Y 658

2

R01 07Y 623

3

R01 E05 651

4

R01 07Y 096

5

R01 07Y 092

6

R01 07Y 691

7

R01 A16 500

8

R01 07Y 002

9

R01 24K 658

R01 07Y 658

11

R01 07Y 635

T7W E09 714

R01 E01 049

R01 E00 075

T7W E10 713

13

8

7

Parts Name Specifications

BACK PLATE

CORNER COVER

UNDER COVER

FRONT PANEL

SCREW CAP

VANE SLEEVE

FRONT GRILLE

AIR FILTER

AUTO VANE

RECEIVING UNIT

CORNER COVER

BOX ASSEMBLY

WIRELESS REMOTE CONTROLLER

WIRELESS REMOTE CONTROLLER DOOR

WIRELESS REMOTE CONTROLLER HOLDER

WIRED REMOTE CONTROLLER

9

10

12, 18GA

1

3

1

2

1

Q'ty/set

PKA-A

12, 18GAL

14

15

Remarks

(Drawing No.)

1

3

1

2

1

16

TEMP.

Wiring

Diagram

Symbol

RU

R.B

ON/OFF

Recom-

mended

Q'ty

50

STRUCTURAL PARTS PKA-A24FA PKA-A30FA PKA-A24FAL PKA-A30FAL

13

12

1

1011

9

2

3

TEMP.

ON/OFF

5

7

8

4

Part number that is circled is not shown in the figure.

No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

Part No.

R01 12G 662

R01 E01 812

R01 E00 811

R01 A17 500

R01 12G 691

R01 24K 658

R01 12G 661

T7W E05 661

T7W E10 713

R01 E00 075

R01 E01 049

T7W E08 714

R01 12G 808

R01 E01 641

R01 12G 523

LEFT SIDE PANEL

UNDER PLATE

NOSE

AIR FILTER

INTAKE GRILLE

RECEIVER

RIGHT SIDE PANEL

WIRED REMOTE CONTROLLER

WIRELESS REMOTE CONTROLLER HOLDER

WIRELESS REMOTE CONTROLLER DOOR

WIRELESS REMOTE CONTROLLER

BACK PLATE

TOP PLATE

DRAIN SOCKET

Part Name

Specifications

Q'ty/set

PKA-A

24, 30FA

1

4

2

1

6

24, 30FAL

1

4

2

1

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

RU

R.B

Recommended

Q'ty

51

STRUCTURAL PARTS PKA-A36FA PKA-A36FAL

1

13

12

14

2

3

4

Part number that is circled is not shown in the figure.

11

9

10

TEMP.

ON/OFF

5

6

7

8

Part No.

No.

R01 12G 662

1

R01 E00 812

2

R01 E01 811

3

R01 A17 500

4

R01 12G 691

5

R01 24K 658

6

R01 12G 661

7

T7W E05 661

T7W E10 713

8

R01 E00 075

9

R01 E01 049

10

T7W E08 714

11

R01 16G 808

12

R01 E00 641

13

R01 16G 692

14

R01 12G 523

15

Part Name

Specification

LEFT SIDE PANEL

UNDER PLATE

NOSE

AIR FILTER

INTAKE GRILLE

RECEIVER

RIGHT SIDE PANEL

WIRED REMOTE CONTROLLER

WIRELESS REMOTE CONTROLLER HOLDER

WIRELESS REMOTE CONTROLLER DOOR

WIRELESS REMOTE CONTROLLER

BACK PLATE

TOP PLATE

INTAKE GRILLE

DRAIN SOCKET

Q'ty/set

36FA

1

5

2

1

PKA-A

36FAL

1

5

2

1

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

RU

R.B

Recom-

mended

Q'ty

52

14 RoHS PARTS LIST

STRUCTURAL PARTS PKA-A12GA PKA-A18GA1 PKA-A18GA2 PKA-A12GAL1 PKA-A12GAL2 PKA-A18GAL1 PKA-A18GAL2

1 PKA-A12GA2

2

4

3

5

6

1

12

11

No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

7

Parts No.

RoHS

R01 08Y 808

G

R01 08Y 658

G

R01 08Y 623

G

R01 E05 651

G

R01 08Y 096

G

R01 08Y 092

G

R01 08Y 691

G

R01 A32 500

G

R01 08Y 002

G

R01 E18 658

G

R01 10Y 658

G

R01 08Y 635

G

T7W E09 714

G

R01 E03 049

G

R01 E00 075

G

T7W E14 713

G

8

9

Parts Name

BACK PLATE

CORNER COVER

UNDER COVER

FRONT PANEL

SCREW CAP

VANE SLEEVE

FRONT GRILLE

AIR FILTER

AUTO VANE

RECEIVING UNIT

CORNER COVER

BOX ASSEMBLY

WIRELESS REMOTE CONTROLLER

WIRELESS REMOTE CONTROLLER DOOR

WIRELESS REMOTE CONTROLLER HOLDER

WIRED REMOTE CONTROLLER

Specifications

10

GA1/GA2

13

Q'ty/set

PKA-A12/18

GAL

1/GAL2

1

3

1

2

1

3

1

2

1

14

15

Remarks

(Drawing No.)

16

TEMP.

Wiring

Diagram

Symbol

RU

R.B

ON/OFF

Recommended

Q'ty

53

STRUCTURAL PARTS PKA-A24FA

1 PKA-A30FA1

PKA-A24FAL1 PKA-A30FAL1 PKA-A24FA2 PKA-A30FA2 PKA-A24FAL2 PKA-A30FAL2

13

12

1

2

3

4

Part number that is circled is not shown in the figure.

9

1011

TEMP.

ON/OFF

5

7

8

6

No.

Part No.

Part Name

RoHS

R01 14G 662

G

1

R01 E02 812

G

2

R01 E00 811

G

3

R01 A17 500

G

4

R01 17G 691

G

5

R01 E18 658

G

6

R01 14G 661

G

7

T7W E18 661

G

T7W E14 713

G

8

R01 E00 075

G

9

R01 E03 049

G

10

T7W E08 714

G

11

R01 E03 808

G

12

R01 E19 641

G

13

R01 E02 523

G

14

LEFT SIDE PANEL

UNDER PLATE

NOSE

AIR FILTER

INTAKE GRILLE

RECEIVER

RIGHT SIDE PANEL

WIRED REMOTE CONTROLLER

WIRELESS REMOTE CONTROLLER HOLDER

WIRELESS REMOTE CONTROLLER DOOR

WIRELESS REMOTE CONTROLLER

BACK PLATE

TOP PLATE

DRAIN SOCKET

Specifications

54

Q'ty/set

PKA-A24/30

1/FA2

FAL1/FAL2

FA

1

4

2

1

4

2

1

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

RU

R.B

Recom-

mended

Q'ty

STRUCTURAL PARTS PKA-A36FA

1 PKA-A36FAL1 PKA-A36FA2 PKA-A36FAL2

13

12

1

14

2

3

4

Part number that is circled is not shown in the figure.

11

9

10

TEMP.

ON/OFF

5

6

7

8

No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Part No.

RoHS

R01 14G 662

G

R01 E03 812

G

R01 E01 811

G

R01 A17 500

G

R01 17G 691

G

R01 E18 658

G

R01 14G 661

G

T7W E18 661

G

T7W E14 713

G

R01 E00 075

G

R01 E03 049

G

T7W E08 714

G

R01 E04 808

G

R01 E20 641

G

R01 18G 692

G

R01 E02 523

G

Part Name Specification

FA

LEFT SIDE PANEL

UNDER PLATE

NOSE

AIR FILTER

INTAKE GRILLE

RECEIVER

RIGHT SIDE PANEL

WIRED REMOTE CONTROLLER

WIRELESS REMOTE CONTROLLER HOLDER

WIRELESS REMOTE CONTROLLER DOOR

WIRELESS REMOTE CONTROLLER

BACK PLATE

TOP PLATE

INTAKE GRILLE

DRAIN SOCKET

Q'ty/set

PKA-A36

1/FA2

FAL1/FAL2

1

5

2

1

5

2

1

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

RU

R.B

Recommended

Q'ty

55

ELECTRICAL PARTS PKA-A12GA

1 PKA-A12GAL1 PKA-A12GA2 PKA-A12GAL2

PKA-A18GA1 PKA-A18GAL1 PKA-A18GA2 PKA-A18GAL2

1

4

3

5

2

6

9

7

8

10

11

12

10

13

Part number that is circled is not shown in the figure.

No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

Parts No. Parts Name Specifications

RoHS

G

T7W H28 480

G

R01 E22 114

G

R01 08Y 102

G

R01 E04 103

G

R01 08Y 106

G

T7W A01 675

G

R01 08Y 524

G

R01 08Y 527

G

R01 08Y 530

G

R01 10Y 038

G

R01 08Y 038

G

R01 08Y 059

G

R01 E14 223

G

R01 E06 317

G

R01 08Y 135

G

R01 08Y 105

G

T7W E30 762

HEAT EXCHANGER

LINE FLOW FAN

BEARING MOUNT

SLEEVE BEARING

BEARING SUPPORT

FAN GUARD

DRAIN PLUG

DRAIN HOSE

NOZZLE

GUIDE VANE

ARM

VANE MOTOR

WIRERLESS ADAPTER CONTROLLER BOARD

MOTOR COVER

RUBBER MOUNT

FAN MOTOR

14

PM4V30-K

1

17

16

15

GA1 GA2

10

27

24

Q'ty/set

PKA-A12,18

GAL1 GAL2

1

4

10

2

1

2

1

25

26

23

18

(Drawing No.)

1

4

10

2

1

2

1

22

20

19

Remarks

Continued to the next page

21

Wiring

Diagram

Symbol

MV

W.B

MF

Recom-

mended

Q'ty

56

From the previous page

No.

18

19

20

21

22

23

24

25

26

27

28

Parts No. Parts Name

RoHS

T7W E41 716

G

R01 E18 246

G

T7W E17 255

G

T7W E56 310

G

T7W E70 310

G

T7W E35 313

G

R01 E21 246

G

T7W E46 716

G

R01 H11 202

G

R01 H08 202

G

T7W E05 202

G

R01 H05 202

G

T7W E10 130

G

R01 E06 239

G

TERMINAL BLOCK

CAPACITOR

INDOOR CONTROLLER BOARD

POWER BOARD

TERMINAL BLOCK

CONDENSER/EVAPORATOR TEMPERATURE THERMISTOR

ROOM TEMPERATURE THERMISTOR

PIPE TEMPERATURE THERMISTOR

MOTOR SUPPORT

FUSE

Specifications

3P(L1, L2, GR)

3P(S1, S2, S3)

2.0 × 440V

2P(1,2)

6.3A 250V

Q'ty/set

PKA-A12,18

GA1 GAL1

1

GA2 GAL2

1

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

TB2

TB4

C

I.B

P. B

TB5

TH5

TH1

TH2

FUSE

Recommended

Q'ty

57

ELECTRICAL PARTS PKA-A24FA

1 PKA-A30FA1 PKA-A24FAL1 PKA-A30FAL1

PKA-A24FA2 PKA-A30FA2 PKA-A24FAL2 PKA-A30FAL2

26

1

25

2

3

4

5

7

8

Part number that is circled is not shown in the figure.

No.

1

G

2

G

3

G

4

G

5

G

6

G

7

G

8

G

9

G

10

G

11

G

12

G

Part No.

RoHS

R01 Z61 102

R01 E23 114

T7W H25 480

T7W H26 480

T7W E24 529

R01 14G 621

R01 13G 063

R01 18G 002

R01 E04 527

R01 E15 223

R01 E06 317

T7W E16 255

T7W E56 310

T7W E70 310

Part Name

BEARING MOUNT

LEFT LINEFLOW FAN

HEAT EXCHANGER

DRAIN PAN

CENTER COVER

JOINT SHAFT

AUTO VANE

DRAIN HOSE

VANE MOTOR

WIRELESS ADAPTER CONTROLLER BOARD

CAPACITOR

INDOOR CONTROLLER BOARD

23

24

22

9

Specification

2.5 440V

58

21

14

19

15

18617

16

10

Q'ty/set

PKA-A

24 30 24 30 24 30 24 30

FA

1 FA L1 FA2 FAL2

1

2

1

13

11

12

Remarks

(Drawing No.)

1

2

1

Continued to the next page

Diagram

Symbol

Wiring

MV

W.B

C

I.B

20

Recom-

mended

Q'ty

From the previous page

No.

Part No. Part Name

RoHS

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

T7W E35 313

G

T7W E46 716

G

R01 E18 246

G

T7W E41 716

G

R01 H06 202

G

R01 H07 202

G

R01 H05 202

G

T7W B05 762

G

R01 12G 105

G

R01 E04 115

G

R01 KV5 102

G

R01 E03 103

G

T7W E15 675

G

R01 E04 103

G

R01 E06 239

G

INDOOR POWER BOARD

TERMINAL BLOCK

ROOM TEMPERATURE THERMISTOR

CONDENSER / EVAPORATOR

TEMPERATURE THERMISTOR

PIPE TEMPERATURE THERMISTOR

FAN MOTOR

RUBBER MOUNT

RIGHT LINEFLOW FAN

BEARING MOUNT

SLEEVE BEARING

FAN GUARD

SLEEVE BEARING

FUSE

Specification

2P(1, 2)

3P(S1, S2, S3)

3P(L1, L2, GR)

PN4N45-K

6.3A 250V

Q'ty/set

PKA-A

24 30 24 30 24 30 24 30

1 FAL 1 FA2 FAL2

FA

1

2

1

2

1

2

1

2

1

2

1

2

1

Remarks

(Drawing No.)

1

2

1

2

1

Wiring

Diagram

Symbol

P. B

TB5

TB4

TB2

TH1

TH5

TH2

MF

FUSE

Recom-

mended

Q'ty

59

ELECTRICAL PARTS PKA-A36FA

1

1 PKA-A36FAL1 PKA-A36FA2 PKA-A36FAL2

26

25

2

23

24

3

4

25

22

20

21

15

14

13

5

6

19

16

18

10

17

11 129

7

8

Part number that is circled is not shown in the figure.

No.

G

1

G

2

G

3

G

4

G

5

G

6

G

7

G

8

G

9

G

10

G

11

G

12

G

Part No.

RoHS

R01 Z61 102

R01 19G 114

T7W H27 480

T7W E25 529

R01 14G 621

R01 13G 063

R01 19G 002

R01 E04 527

R01 E15 223

R01 E06 317

T7W E16 255

T7W E56 310

T7W E70 310

BEARING MOUNT

LEFT LINEFLOW FAN

HEAT EXCHANGER

DRAIN PAN

CENTER COVER

JOINT SHAFT

AUTO VANE

DRAIN HOSE

VANE MOTOR

WIRELESS ADAPTER CONTROLLER BOARD

CAPACITOR

INDOOR CONTROLLER BOARD

Part Name

Specification

2.5F 440V

60

PKA-A36

1

FA

1

2

1

Q'ty/set

FA

FAL1

1

2

1

Remarks

(Drawing No.)

2

FAL2

1

2

1

Continued to the next page

Wiring

Diagram

Symbol

W.B

Recommended

Q'ty

MV

C

I.B

From the previous page

No.

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

Part No. Part Name Specification

RoHS

T7W E35 313

G

T7W E46 716

G

R01 E18 246

G

T7W E41 716

G

R01 H06 202

G

R01 H07 202

G

R01 H05 202

G

T7W B06 762

G

R01 16G 105

G

R01 19G 115

G

R01 KV5 102

G

R01 E03 103

G

T7W E16 675

G

R01 E04 103

G

R01 E06 239

G

INDOOR POWER BOARD

TERMINAL BLOCK

ROOM TEMPERATURE THERMISTOR

CONDENSER / EVAPORATOR

TEMPERATURE THERMISTOR

PIPE TEMPERATURE THERMISTOR

FAN MOTOR

RUBBER MOUNT

RIGHT LINEFLOW FAN

BEARING MOUNT

SLEEVE BEARING

FAN GUARD

SLEEVE BEARING

FUSE

2P(1, 2)

3P(S1, S2, S3)

3P(L1,L2,GR)

PN4N70-K

6.3A 250V

PKA-A36

FA

1

2

1

2

1

Q'ty/set

FA

FAL1

1

2

1

2

1

Remarks

(Drawing No.)

2

FAL2

1

Wiring

Diagram

Symbol

P. B

TB5

TB4

Recom-

mended

Q'ty

TB2

1

2

1

2

1

TH1

TH5

TH2

MF

FUSE

61

62

63

HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

CCopyright 2006 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Apr. 2009 No.OC369 REVISED EDITION-D PDF 7 Distributed in Oct. 2007 No.OC369 REVISED EDITION-C PDF 9 Distributed in Jun. 2007 No.OC369 REVISED EDITION-B PDF 9 Distributed in Aug. 2006 No.OC369 REVISED EDITION-A PDF 9 Distributed in Feb. 2006 No.OC369 PDF 10

New publication, effective Apr. 2009 Specifications subject to change without notice.

Mitsubishi PKA-A12GA1, PKA-A18GA1, PKA-A12GA2, PKA-A18GA, PKA-A18GA2 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual