Panasonic CS-PC12DKD, CU-PC12DKD, CS-PA12DKD, CU-PA12DKD Service manual

STD

MODE TEMP

OFF

CANCEL SET

FANSPEED

Order No. GMAC0504039C3

Air Conditioner

CS/CU-PC12DKD
CS/CU-PA12DKD

OFF/ON

ON

TIMER

AIRSWING

This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-techical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

CONTENTS

Page Page

WARNING

1 Features 2

2 Functions 3

3 Product Specifications 6

4 Dimensions 10

5 Refrigeration Cycle Diagram 12

6 Block Diagram 13

7 Wiring Diagram 15

8 Operation Details 17

Installation Insruction

9

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10 2-way,3-way Valve

11

Disassembly of The Parts

12 Troubleshooting Guide

13 Technical Data

14 Exploded View

15 Replacement Parts List

16 Exploded View

17 Replacement Parts List

18 Electronic Circuit Diagram

31

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41

48

51

53

55

56

57

58

59

C

R

R

Guangzhou Matsushita Air Conditioner Co., Ltd.
(GMAC) All rights reserved. Unauthorized copying
and distribution is violation of law.

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

1 Features

High Efficiency

Air Quality Indicator

Auto Restart Control

Automatically restart after power failure

Comfort Environment

Air filter with function to reduce dust and smoke

12-hour Timer Setting

2

2 Functions

Remote Control

MODE TEMP

OFF

CANCEL

FANSPEED

OFF/ON

TIMER

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

STD

ON

SET

AIR SWING

OFF/ON

MODE

FAN
SPEED

Operation START/STOP

Turn on/off the air conditionor

When stop the operation by pressing

OFF/ON button,the cursor key points

to OFF.

Operation Mode Selection

Automatic Operation

Heating Mode Operation

(For PA12DKD)

Cooling Mode Operation

Soft Dry Mode Operation

Air Circulation Mode Operation

(For PC12DKD)

Mode

Indoor Fan Speed Selection

Low Speed

Medium Speed

High Speed

Automatic Speed

AIR
SWING

Airflow Direction Control

Horizontal Airflow Direction Control

-Auto Control

-Manual Control

Vertical Airflow Direction Manual Control

TEMP

Room Temperature Setting

Temperature Setting(16 to 30 )

Auto Operation

TIMER
OFF/ON

Timer Operation Selection

Stop/Start Operation Control

(set the ON/OFF Timer hourly later)

TIMER
SET/
CANCEL

Set /Cancel Timer Operation

Set timer/Cancel the set timer

By pressing SET button for 5seconds

continuously to switch to set the sensor

sensitivity.

3

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Indoor Unit

Auto Switch

Button

Power Switch ON/OFF

National

Anti-freezing Control for the Evaporator

When the remote control cannot be used or

for repairing and testing ,please use this

button.

Demonstration Mode

Keep pressing this button for 15seconds to start

or end the Demonstration Mode.

Signal Receiving Sound Control

Keep pressing this button for 10seconds to turn

on or turn off the signal receiving sound.

Operation Indication Lamps

Power (green)

Timer(orange)

Air quality

Green

Orange

Red

Lights up in operation;

Blinks during Test

Run operation and

determining Auto

Operation mode

Timer in operation

Cooling or Soft Dry Operation

Warm Booting Control

(For PA12DKD only)

Indoor fan starts running when temperature

of evaporator reaches 30 or above.

When temperature of evaporator is between

30 and 34 ,indoor fan will run at Super Low

or Low speed.

When temperature of evaporator reaches 34 ,

Warm Booting Operation ends.

Indoor Fan Speed Control

High,Med,Low

Auto Fan Speed

Airflow Direction Control

Operation Mode

Cooling/Heating/Soft Dry /Auto Operation

/ Air circulation

Time Delay Safety Control

The unit will restart operation in 3-4

minutes after each pause.

7-Minutes Time Save Control

7-minutes automatic restarting at Cooling

Operation

Automatic Airflow Direction Control

The louver automatically swings up and down

Airflow Direction Manual Control

Delayed On-timer Control

For cooling or soft dry mode, the unit

starts 15 minutes before the set time with

the remote control, but for heating mode

30 minutes before the set time.

4

Outdoor Unit

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Panasonic

Anti-reverse Protection

To protect the compressor from reverse

rotation when power off suddenly.

Overload Protector

The 2-step Overload Protector is to protect

the compressor when

1)Temperature of compressor reaches

2)High temperature or current enters into the

compressor

145

60-seconds Test Operation Control

Once the compressor is activated, it does not

stop for 60 seconds. It stops immediately with

remote control ON/OFF button.

Overload Protection Control

(For PA12DKD only)

When the temperature of evaporator
reaches 51 ,outdoor fan stops,and will
restart when the temperature of evaporator
declines to 49 .
When the temperature of evaporator
reaches 65 ,compressor will stop.

4-way Valve Control

(For PA12DKDonly)

If the unit is stopped during Heating

Operation,the 4-way valve will remain in

heating mode operation for 5 minutes.

Deicing Control

Anti-freezing operation for outdoor unit(during

Heating Mode Operation only)

Temperature of the condenser is tested by TRS.

(For PA12DKD only)

5

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

3 Product Specifications

Cooling Capacity

Heating Capacity

Moisture Removal

Power Source

Airflow Method

Air Circulation

Indoor Air (low)

Indoor Air (medium)

Indoor Air (high)

Outdoor Air

Noise Level

Electrical

Input

Data

Running Current

EER/COP

Starting Current

Piping Connection Port(Flare piping)

Piping Size(Flare piping)

Drain Hose

Inner Diameter
Length

Power Supply Cord Length
(Number of core-wire)

Dimensions

Height

Width
Depth

Net Weight

Compressor

Type

Motor Type

Rated output

Air Circulation

type

Motor type

Input

Rated Output

Fan

Speed

Low
Med

High

Unit

kW

kW

L/h

Phase

V

Cycle

OUTLET

INTAKE

3

m /min

3

m /min

3

m /min

3

m /min

dB(A)

W

A

W/W

A

Inch
Inch

Inch
Inch

mm

m

m

mm
mm
mm

kg

W

W

W
rpm
rpm

rpm

CS-PA12DKD CU-PA12DKD

3.35-3.40

3.80-3.85

1.80

Single

220/230

50

SIDE VIEW

7.62

8.48

9.8

-

Cooling:high39,Low32
Heating:high39,Low31

TOP VIEW

-

-

-

-

Cooling:high48
Heating:high49

Cooling:1020-1050
Heating:1000-1030

Cooling:4.80-4.80
Heating:4.80-4.80

Cooling:3.28-3.24
Heating:3.80-3.74

22

G:half union1/2"
L:half union1/4"

G:gas side1/2"
L:liquid side1/4"

14

0.65

1.3

3 core-wire/1.0mm

280
799
183

9

-

-

-

-

-

-

Cross-flow fan

Induction(4 pole)

-

18

980 60
1090 60
1260 60

2

G:3-way valve1/2"
L:2-way valve1/4"

G:gas side1/2"
L:liquid side1/4"

-

-

-

­540
780
289

34

Rotary(1 cylinder)
Rolling piston type

Induction(2 pole)

900

Propeller fan

Induction(6 pole)

-

25

-

-

760 50

6

Heat
Exchanger

Description
Tube Material
Fin Type

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Unit CS-PA12DKD CU-PA12DKD

Evaporator

Copper

Slot type

Condenser

Copper

Corrugation type

Rows/Stage

(Plate fin configuration,forced draft)

2x15

FPI

Dimensions

Refrigerant Control Device
Refrigeration Oil

Refrigerant (R-22)
Thermostat
Protection Device

Length

Capillary

Circulation
Inner Diameter

Air Filter

mm

(c.c)

g

Electronic Control

mm
L/min
mm

P.P. Honeycomb

21

610x252x25.4

-

-

-

-

-

-

-

Refrigerant Circulation Control Device
Compressor Capacitor
Fan Motor Capacitor

F,V
F,V

-

1.5

* 60g for air purging is not included.

Specifications are subject to change without notice for further improvement.

2X24

21

735.8
X504x36.38

715.1

Capillary Tube

SUNISO 4GDID or ATMOS

M60 or ATMOS 56M

1060(*)

-

O.L.P.(230V,37A)

545 10

12.5 0.2

609 10

10.0 0.2

1.5

Capillary

F,30 370V
F,1.8 400VF , 400V

1.5

7

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Cooling Capacity

Moisture Removal

Power Source

Airflow Method

Air Circulation

Indoor Air (low)

Indoor Air (medium)

Indoor Air (high)

Outdoor Air

Noise Level

Electrical

Input

Data

Running Current

Unit

kW

L/h

Phase

V

Cycle

OUTLET

INTAKE

3

m /min

3

m /min

3

m /min

3

m /min

dB(A)

W

A

CS-PC12DKD CU-PC12DKD

3.50-3.55

1.80

Single

220/230

50

SIDE VIEW

7.65

8.26

9.7

-

High39,Low32

TOP VIEW

-

-

-

-

High48

1020-1050

4.80-4.80

EER

Starting Current

Piping Connection Port(Flare piping)

Piping Size(Flare piping)

Drain Hose

Inner Diameter
Length

Power Supply Cord Length
(Number of core-wire)

Dimensions

Height

Width

Depth

Net Weight

Compressor

Type

Motor Type

Rated Output

Air Circulation

Type

Motor Type

Input

Rated Output

Fan

Speed

Low
Med
High

W/W

A

Inch
inch

Inch
inch

mm

m
m

mm
mm
mm

kg

W

W
W

rpm
rpm

rpm

G:half union1/2"
L:half union1/4"

G:gas side1/2"
L:liquid side1/4"

14

0.5

1.3

3 core-wire/1.0mm

280
799
183

9

-

-

-

-

-

-

Cross-flow fan

Induction(4 pole)

-

18
1010 60
1090 60
1280 60

3.43-3.38

23

2

G:3-way valve1/2"
L:2-way valve1/4"

G:gas side1/2"
L:liquid side1/4"

-

-

-

­540
780
289

32

Rotary(1 cylinder)
Rolling piston type

Induction(2 pole)

900

Propeller fan

Induction(6pole)

-

25

-

-

760 60

8

Heat
Exchanger

Description
Tube Material
Fin Type

Rows/Stage

FPI

Dimensions

Refrigerant Control Device

Refrigeration Oil

Refrigerant (R-22)
Thermostat
Protection Device

Length

Capillary

Circulation
Inner Diameter

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Unit CS-PC12DKD CU-PC12DKD

Evaporator

copper

slot type

Condenser

copper

Corrugation type

(Plate fin configuration,forced draft)

2x15 2x24

mm

(c.c)

g

21

610x252x25.4

-

-

-

Electronic Control

Capillary Tube

SUNISO 4GDID or

ATMOS M60(M56)

O.L.P.(37A/230V)

21

735.8x504x25.4

760(*)

­mm
L/min
mm

-

-

-

350 10

15.0 0.2

1.5

Air Filter

P.P Honeycomb

Refrigerant Circulation Control Device
Compressor Capacitor
Fan Motor Capacitor

F, V
F, V

-

* 60g for air purging is not included.

Specifications are subject to change without notice for further improvement.

Capillary

30

F,
F,1.8 440VF,1.5 400V

-

370V

9

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

4 Dimensions

Indoor Unit

Unit : mm

Side view

Left Piping
Hole

Air intake

Air outlet

Front View

280

<Back View>

790

Installation Plate Hook

61

Gas Side

165

Liquid
Side

49

183

49

MODE

OFF

CANCEL

FANSPEED

TIMER

STD

TEMP

OFF/ON

ON

SET

AIRSWING

Right Piping
Hole

61

5

125

(100)

(420)

Drain Port

Installation plate (Front View)

254

95

(131)

B

(50)

56

16.5

A

(382) (118)

(631)

10

Outdoor Unit

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Unit : mm

<Top View>

More
than 10cm

More
than 10cm

More than 100 cm

<Front View>

INVERTER

780

570

48

34.5

289

<Side View>

291

274

11

18

540

16

320

352

INTAKE AIR
SENSOR

PIPING
SENSOR

PIPING
SENSOR

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

5 Refrigeration Cycle Diagram

CS/CU-PA12DKD

AIR QUALITY
SENSOR

INTAKE AIR
SENSOR

PIPING
SENSOR

PIPING
SENSOR

4-way valve

Cooling

Heating

CS/CU-PC12DKD

INTAKE AIR

AIR QUALITY
SENSOR

SENSOR

PIPING
SENSOR

PIPING
SENSOR

12

6 Block Diagram

CS-PA12DKD/CU-PA12DKD

O.L.P.

Compressor

FM

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

OUTDOOR UNIT

INDOOR UNIT

4-Valve

4

SSR202

RY-HOT

Remote

Control

3

CR201

SSR201

FM

1

RY-PWR

Piping Sensor

2

FM

FUSE

Receiver

Indicator

POWER SUPPLY

Sensor

AC220V-230V 50Hz

13

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

CS-PC127DKD/CU-PC12DKD

O.L.P.

Compressor

FM

RY-PWR

FUSE

Remote

Control

Receiver

FM

Indicator

POWER SUPPLY

AC220V-230V 50Hz

SSR201

SC

Sensor

14

7 Wiring Diagram

POWER SUPPLY

CORD

AC 220V/230V, 50Hz

CS-PA12DKD/CU-PA12DKD

Wireless
Remote Control

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

AC 220V/230V, 50Hz

INDOOR UNIT

TERMINAL BOARD

POWER SUPPLY

CORD

B

1(L) 2(N) 3 4

Indicator
Complete

BR

BL

Y/G

FUSE

102 250V 3A

ELECTRONIC CONTROLLER

STEPPING

MOTOR

1

B

3

R

5

Y

W

FUSE

W

R

B

AUTO SWITCH

Y/G

BR

BL

SENSOR(PIPING TEMP.)

FAN MOTOR

INDOOR UNIT

OUTDOOR UNIT

TERMINAL BOARD

COMPRESSOR

1(L) 2(N) 3 4

YW

Y

Y/G

R

CAPACITOR

Y

FAN MOTOR

R

B

B

CAPACITOR

B

OUTDOOR UNIT

INDOOR FAN MOTOR RESISTANCE( )

CS-PA12DKD

CONNECTING

Y-B M

Y-R A

COMPRESSOR RESISTANCE( )

CWA921098

324

290.5

CU-PA21DKD

CONNECTING

C-R

C-S

CWB092281

2.803

4.420

R : RED
BL : BLACK

YELLOW

C

B : BLUE
BR : BROWN
O : ORANGE

SENSOR(PIPING TEMP.)

R

BLUE

TRADE MARK

S

RED

COMPRESSOR TERMINAL

OUTDOOR FAN MOTOR RESISTANCE( )

GRY : GREY
G : GREEN
Y : YELLOW
W : WHITE
Y/G : YELLOW/GREEN
P : PINK

CU-PA21DKD

CONNECTING

Y-B

Y-R

CWA951440

272

248

15

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

POWER SUPPLY

CORD

AC 220V/230V 50Hz

CS-PC12DKD/CU-PC12DKD

Wireless
Remote Control

POWER SUPPLY

CORD

AC 220V/230V 50Hz

B

Indicator
Complete

Y/G

THERMAL FUSE

102 (250V 3A)

W
W
W
W
W
W

W
W
W
W
W

W

ELECTRONIC CONTROLLER

AC(WHT)

AUTO SWITCH

BR
R
O
Y
P

B

R

Y

W

BR

BL

SENSOR(PIPING TEMP.)

STEPPING

FAN MOTOR

MOTOR

Y/G

VENTILATION SIGNAL

TRANSMITTER(PURCHASE

ON SELECTION)

INDOOR UNIT

Y

Y

FAN
MOTOR

R

B

CAPACOTOR

B

B

CAPACOTOR

Y

R

INDOOR FAN MOTOR RESISTANCE( )

CS-PC12DKD

CONNECTING

Y-B M

Y-R A

COMPRESSOR RESISTANCE( )

CWA921098

324

290.5

CU-PC21DKD

CONNECTING

C-R

C-S

CWB092281

2.803

4.420

O.L.P

COMPRESSOR

Y/G

OUTDOOR

UNIT

YELLOW

C

R

BLUE

TRADE MARK

S

RED

COMPRESSOR TERMINAL

OUTDOOR FAN MOTOR RESISTANCE( )

CU-PC21DKD

CONNECTING

Y-B

Y-R

CWA951423

272

248

R : RED
BL : BLACK
B : BLUE
BR : BROWN
O : ORANGE
GRY : GREY
G : GREEN
Y : YELLOW
W : WHITE
Y/G : YELLOW/GREEN
P : PINK

16

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

8 Operation Details

8.1 .Cooling Mode Operation

When selecting the Cooling Mode Operation, the unit will operate according to the setting by the Remote Controller or
the control panel on the indoor unit and the operation is as the following.

Time Delay Safety Control

3 min.----If the compressor stops, it will not restart within 3 minutes.(Protection of compressor).

7 Minutes Time Save Control

7 min.----The unit will automatically operate in 7 minutes even if the room temperature is not reached.
(Prevention of raising the humidity)

Anti-Freezing Control

If temperature of evaporator is lower than 2 continuously

Evaporator
Temperature

()

for 4 minutes, the compressor will cease to prevent the
evaporator from freezing. Fan speed setting will not be
changed.
When temperature of evaporator reaches 10 ,compressor
will restart.

During Cooling Mode Operation, the Time Delay Safety
Control is available.

Time

Automatic Fan Speed Mode

During Cooling Mode Operation, use remote controller to select Automatic Fan Speed.

Fan speed will be at the point between "High speed" and "Medium speed".

Deodorization control.

1

Indoor Fan

STOP

Slow

Slow

STOP STOP

Slow Slow

10

4 minutes

2

Compressor ceases

2

Restart

40 30 40 3020 160

Compressor

ON

STOP

1 Fan speed will be at Hi till the compressor ceases (set temperature reached).
2 Fan speed will be at Me when the compressor restarts.

17

ON

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Time Graph for Cooling Operation

Intake air temperature

Set temperature

1.5

Basic Time

Comp.

Indoor Fan

Outdoor Fan

abcdefghi j k lmnopqrstuvwxyz

Start

Stop

31

29

10

2

1’

3

4’

1 1

3

Evaporater
temperature

7

Operation Indicator

Operation status

d-g
g-h
h-o
q-t

:

Time delay safety control

:

Compressor Test control

:

Auto restart control

:

Anti-freezing Control

Time

Operate

Stop

8.2. Soft Dry Mode Operation

Operation area

COOLING

COOLING(OFF)

DRY(ON

DRY

DRY(OFF)

DRY(OFF)

When selecting Soft Dry mode operation, the operation will be cooling until the room temperature reaches the set temp on

remote control, and then Soft Dry will be activated. (During Soft Dry Mode the fan of indoor unit will operate at super low

speed. The soft dry mode will run for less than 10 minutes.)

Once Soft Dry mode operation is turned off, indoor fan, compressor and outdoor fan will stop for 6 minutes.

COOLING(ON)

1.5

1.0

DRY(ON)

Time Delay Safety Protection

During cooling mode operation, if the compressor ceased, it will not restart within 3 minutes.

Anti Freezing Control

Same as the denotation in Cooling Operation.( )

P21

(During Soft Dry Mode Operation, compressor will stop for at least 6 min.)

18

Automatic Fan Speed

During Soft Dry Operation, use remote controller to select Auto Fan Speed mode.
Indoor Fan Speed is at “Lo-”

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Lo-

Slo

Indoor
fan

OFF

T1

40

T2

70

10

Compressor

ON

Time Graph for soft dry operation

Intake Air temp

Cooling mode operation activated

1.5

1.0

Cooling mode operation stopped

Soft mode operation activated

Soft dry mode operation stop

Lo-

Slo Slo

OFF OFF OFF

T1

40

6

T2

70

10

ON

OFF

abcdef g hi jklmnopq rst u

Basic Time

Comp.

Indoor Fan

Outdoor Fan

Operation Indicator

4-way Valve

Operation status

a-c,p-r

c-p,r-u

e-f

j-l

q-t

:

Cooling Mode Operation
Soft Dry Mode Operation

:

:

Soft Dry Mode Operation Stopped
Compressor Test Operation Control

:

:

Anti Freezing Control

Evaporator
temperature

61 1 4

1

Super

Super

Super

Slo Slo Slo Slo

Low

Low

Low

Super

Low

Low

Slo Slo

Slo Slo Slo

Time

o

10 C

o

2C

666

Slo

Slo

Cooling mode operation

Soft Dry Mode operation

Operate

Stop

19

Super Low

Indoor Fan

Stop

Indoor Heat
Exchanger

()

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

8.3. Heating Mode Operation(Only for PA12DKD)

When selecting the Heating Mode Operation, the unit will operate according to the setting by the Remote Controller and
the operation is as the following.

Time Delay Safety Control

If the compressor stopped by switching off, turning off by remote controller, or power off, it will not restart within 3 minutes.
When room temperature reaches the set temperature on the remote controller, compressor stops and will not restart within
4 minutes.
3 minutes after the compressor stopped, indoor fan will stop for 1 minute. Then indoor fan will resume operation with the

speed at ”super low”

Over Load protection Control

When temperature of indoor heat exchanger rises to 51 , outdoor fan will stop

when temperature of indoor heat exchanger falls to 49 , outdoor fan will restart.

When temperature of indoor heat exchanger rises to 65 or above, compressor stops, and will restart 4 minutes later.

.

Compressor

Indoor Heat Exchanger 65

Anti-reversing Control

If the compressor has been continuously running for 5 minutes or longer, and the difference of temperature between

intake air and evaporator is continuously lower than 5.0 or below for 2 minutes, the compressor will stop , and then
restart 3 minutes later.(Time Delay Protection Control is effective.)

Compressor runs 5 min

T 5 last for 2 min

T= intake air temperature - evaporator temperature

4-way valve control

During heating mode operation,4-way valve is at open mode.
During heating mode operation,if the unit turned off, the 4-way valve will remain
at open mode for 5 minutes.

Stops

Compressor

Stops

Compressor Restarts

4 minutes later

Compressor Restarts

3 minutes later

Warm Booting Control

When turning on the unit by heating mode operation,indoor fan
will be activated when temperature of indoor heat exchanger
reaches 30 . (See the figure on the right)

Warm boot operation ends when temperature of indoor heat
exchanger reaches 34 .

20

Indoor Heat
Exchanger

()

34

30

Low

Super Low

Indoor Fan

Stop

Automatic Fan Speed

S Lo

()

()

45

41

34

30

38

30

28

15

Temperature of heat exchanger

During Heating Operation, use remote controller to select Auto Fan Speed mode.
Indoor Fan Speed is between “Me” and “Slo”.

()

SLo

Me

Lo

Lo-

()

38

30

28

45

41

34

30

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Temperature of heat exchanger

Time Graph for Heating Operation

abcdefghi jk

42

Indoor heat
exchanget
Temp.

Intake Temp.

34

32

30

OFF

2

ON

Basic Time

Compressor

Indoor Fan

Outdoor Fan
Operation Indicator

4-way valve

Stop

30'

58''

15

l

nop qr

m

Manual fan speed

Blink

Operate

Stop

150'

1'

30

<Operation status>

a-b
c-d
h-k,o-r

:

Warm booting control(indoor fan Off)

:

Warm booting control(indoor fan Super Slo)

:

Prevent cool air blowing out

Tim e

21

Deicing Operation Time(T)

3

min

3min T 7min

7

min T 9min

T 9min

Td(s)

0

60

120

180

<Operation status>

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Deice Control

Deice operation is to protect the outdoor unit from freezing.

Normal Deice Operation
Deicing starts 30 minutes after heating mode operation or 60 minutes after the latest deicing operation. If temperature of
outdoor piping, tested by TRS, falls to -3 (TRS OFF) or below for continuously 50 seconds, deicing operation starts.

Overload Deicing Operation

During heating operation, if the accumulative stopping time of outdoor fan reaches 60 minutes,
deicing operation will start 1 minute after compressor starts.

Deicing operation ends under conditions below

(a) After 12 minutes.
(b) Temperature of outdoor unit rises to 4 .
(c) As the illustration showed bellow and due to Time Delay (Td), deicing won’t ends immediately.

Deicing Operation Time(T)

3min

3min T 7min

7 min T 9min

T 9min

Td(s)

0

60

120

180

Once deicing operation starts, it won’t end until 60 seconds later.

When deicing operation ends, compressor will stop for 30 seconds, and 4-way valve remains at cooling mode operation
for 10 seconds.

Time Graph for Normal Deicing Operation

Lo

max60'

l

nopq r s t uvwxy z

m

max12'

Slo

or

Blink

Operat io n

Stop

max60'

Lo

42

34

30

Indoor Piping Temp.

Basic Time

Compressor
Indoor Fan

Outdoor Fan
Operation LED

4-way valve

abcd ef gh i j k

60'

max12'

10S20S 20S 20S 20S 20S 10S 20STd

Slo

Time

<Operation status>

a-c Deicing confirmation
c-g Deicing operation(time reset)

h-j,u-w Warm Booting

o-r Deicing(TRS )

22

Time Graph for Overload Deicing

Outdoor Heat

Exchanger

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Outdoor Heat

Exchanger

Basic time

Compressor

abcdef ghi j k

51

49

Out door fan stop for 60' accumulatively

20’’ 20’’

Max
12’

l

m

10’’ 20’’

nopq

Indoor fan
Outdoor fan

Operation Indicator

4-way valve

<Operation status>

Overload controla-i

i-l Overload deicing(timer)

l-m: Warm booting control

m-r Overload control

Time

Blin k

Oper ati on

Stop

23

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

8.4 Automatic Mode Operation

Standard for Determining Operation Mode

First Determination:

Setting Temperature (Standard)

25
22

21

Intake Air

temperature

23

20

Cooling mode

Soft Dry mode

Heating mode

Cooling mode

Soft Dry mode

Heating mode

Second Determination:

One hour after the above determination, the unit will operate according to the table below.

Second Determination

Cooling

Cooling

First
determination

A)

Indoor fan operates at super low speed for 25 seconds.

B)

After judging indoor air temperature, the operation is determined and operation continued at the mode determined.

C)

If indoor temperature is less than 16 , heating operation will immediately operate.

D)

After the operation mode has been determined, the mode does not change. However,Soft Dry mode operation

includes cooling mode operation.

E)

If automatic mode operation is started while the unit is operating,operation will continue.

If current operation is in cooling mode (including the cooling mode operation when is a part of Soft Dry mode

operation) it will be maintained, and if current operation is not cooling mode, the appropriate operation mode is

determined for 25seconds at super slow fan speed.Then the selected mode will continue.

F)

Room temperature adjustment

Dry

Heating

Higher

23 or above

25 or above

2

Dry

20 or above

Heating

23 below

20 below

25 below

Standard

Lower

0

2

8.5. Air Circulation Mode Operation(Only for PC12DKD)

1. An additional heater may make the warm air evenly covering each corner of the room.

2. When the temperature near the ceiling reaches the setting temperature, Air Circulation Mode Operation commences

at low airflow volume. It stops when the temperature drops to 2 below the setting temperature.

3. The vertical airflow direction louver will not swing.

24

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

8.6 Air Quality Sensor Control

Resistance of air quality sensor: Rs(air)=10k ~50k ( The worse the air quality, the smaller the resistance.)

Basic Operation

Detecting and indicating of the air quality will not stop during the operation of the air conditioner.
The power of the air quality sensor is always on during the operation of the air conditioner. When the air
conditioner stops (The air conditioner is on standby.), the air conditioner will provide power to the air quality
sensor intermittently (It will be on for 3 minutes after each 109 minutes.) for the purpose of air quality detecting.
Within 2 minutes after the air conditioner starts to operate, the air quality sensor is in the process of preheating
and the air quality indicator is red.

Resistance Reference

Detecting of air quality( During the operation of the air conditioner)

(a) The measuring period is 20 minutes; The air conditioner will measure the resistance (Rs) of the air quality

sensor once each 2 seconds and record the data. The maximum Rs within the 20 minutes will be selected as

Rs(MAX) for this measuring period.

(b) Suppose the current Rs(MAX) as MAX and the resistance reference of the previous measuring period is as

MAXR1.; If MAX>MAXR1, the resistance reference of the current measuring period is MAXR=MAX; If

MAX<MAXR1, MAXR=MAXR1;

(c) Within 2 minutes after the power of the air quality sensor is turned on, the resistance reference of this

measuring period is the maximum resistance of the sensor during this period.

Maximum of Rs

MAXR1 of previous
measuring period

Updating of MAXR

20minutes

MAX1 MAX2 MAX3

MAX0 MAX1 MAX2

MAX1 MAX0 MAX0

MAX1 MAX0 MAX1

MAX2 MAX1 MAX1

MAX2 MAX1 MAX2

20minutes20minutes

MAX3 MAX2 MAX2

MAX3 MAX2 MAX3

The following conditions should be fulfilled

(d)

The initial MAXR after the preheating of the air quality sensor when the air conditioner is turned on:

The air conditioner will compare the maximum value of the current measuring period (MAX) with the

resistance reference 109 minutes before ( MAXR0) and select the bigger one as the current resistance

(e)

reference(MAXR).

When the air conditioner determines the air quality is getting worse: Air quality level 1 Air quality level 2,

MAXR will not be updated; When the air quality gets better (air quality level 0), Rs detected at this time will be

(f)

MAX and MAXR.

The air conditioner will not detect the air quality during deicing operation. The indication prior to the deicing

operation will be held during the deicing operation.

25

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Detecting of air quality( When the air conditioner is on standby.)

(a) After the air conditioner stops operation, it will provides power to the air quality sensor intermittently to detect

the air quality and update the resistance reference (MAXR). The power of the air quality sensor will be on for 3

minutes after each 109 minutes.

(b)

During these 3 minutes, the air quality sensor will be in preheating process for 2 minutes and the other time is

for measuring the resistance. The air conditioner will compare the maximum resistance measured in this period

with the maximum value in the previous 109 minutes and the bigger one will be selected as resistance

Air Quality Control

Detecting of air quality(When the air conditioner is on standby.)
Rs/MAXR will be calculated automatically every 2 seconds and the air quality level will be determined in

accordance with the value below,

Air Quality
Getting Worse

Air Quality
Getting Better

*G1=0.85

*G2=0.60

Signal of Air Quality Sensor

Air quality
becomes better

Rs/MAXR G1

Rs/MAXR G2

Rs/MAXR G3

Rs/MAXR G4

Air Quality Level

(0) (1)

(2) (1)

(1) (0)

Air quality

(0)

becomes worse

(1)

(2)

(2)(1)

Set the sensitivity number of the air quality sensor as 2 (Standard)

Air Quality Level and Indicator

During preheating of the air quality sensor the air quality indicator is red.
The color of the air quality indicator varies with the air quality level:
Air Pollution Level 0: Green
Air Pollution Level 1:Orange
Air Pollution Level 2:Red

26

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Forced Resetting

Forced Resetting Time (The added operation time mentioned later not included.)

(a) Air Pollution Level 2: Red: 5 minutes Orange: 8 minutes Green

(B) Air Pollution Level 1: Red: 5 minutes Orange: 8 minutes Green

Timer Resetting

When the forced resetting mode is determined and the following conditions are fulfilled, the timer is reset.

1) The air quality changes which results in the changing of the color of the air quality indicator.

2) Compare Rs detected in current 2 seconds with R1 detected in previous 2 seconds and Rs/R1<0.95.

3) Suppose Rs detected in previous 3 minutes is R2 and Rs/R2 0.87.

Added Operation of Air Quality Sensor

When the air quality getting worse

If the air pollution level changes from 0 to 2, the color of the air quality indicator changes as below,

Green Orange (2 Sec.) Red

When the air quality getting better (added operation )

If the air pollution level changes from 2 to o, the color of the air quality indicator changes as below,

Red (60 Sec. ) Orange( 60Sec.) Green

Judgment during added operation

During added operation, if the air quality sensor judges that the air quality is getting worse, the added operation will

be stopped immediately and the air quality indicator will shift to normal indication. If the air quality getting better,

the air conditioner will judge the air quality until the added operation is finished.

Sensitivity Control of Air Quality Sensor

The sensitivity number can be changed through the following procedure

<Setting Sensitivity Number>

1.Keep the SET button on the remote control depressed continuously for 5 seconds to select sensitivity control

m ode.

2.The previous sensitivity setting will be displayed in the temperature display.

“0”=Turn off the air quality indicator

“1”= Low Sensitivity

“2”=Standard Sensitivity

“3”=High Sensitivity................

…………....G1=0.70, G2=0.45, G3=0.48, G4=0.73

………G1=0.85, G2=0.60, G3=0.63, G4=0.88

G1=0.90, G2=0.65, G3=0.68, G4=0.93

3.Press or button on the remote control to change the sensitivity

Within 10 seconds after the sensitivity setting is finished, other settings are not available. The display of the remote

control will change back to normal without pressing any button.

27

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

8.7Demo Mode ( Outdoor unit not needed)

Activate the demo mode:

Keep the AUTO button on the indoor
unit depressed continuously for 15
seconds until 3 beeps are heard and
the demo mode is activated.

In demo mode, the air conditioner can be operated(if the outdoor unit is connected to the indoor unit); Whenever
you turned off the air conditioner, it will restart automatically into demo mode opertion.

Cancel the demo mode:

Keep the AUTO button on the indoor unit depressed continuously for 15 seconds until 3 beeps are heard.

Turn off the air
conditioner

Demo mode operation will be
restarted automatically in 1
minute.

ON

5seconds 10seconds 15seconds

AUTO TEST RUN SOUND DEMO

1“BEEP”

Demo operation control( Air quality indicator and Ventilator Interlocking Unit signal)

5 seconds 5 seconds 5 seconds 5 seconds 5 seconds 5 seconds 5 seconds

Color of air quality indicator

Red Orange green Orange Green Orange Red

Ventilator Interlocking
Unit ON/OFF

ON

OFF

10 seconds 20 seconds

2“BEEP”

3“BEEP”

8.8Ventilator Interlocking Unit Control (Optional)

Purpose: The air conditioner will control the operation of the ventilator (optional) according to the signal of
the air quality sensor when displaying the air quality.

Devices: Ventilator, Ventilator Interlocking Unit (wireless)

To use this function, a ventilator and a ventilator interlocking unit should be purchased.

Power supply:220V-240V~50/60Hz

Control Specification:

Air quality getting worse Air quality getting better

Green

OFF

Oriange

ON

Red

ON

Green

OFF

Oriange

ON

Red

ON

15 minutes after the air conditioner is
Turned on:

Ventilator ON: Air quality indicator is red or
orange.
Ventilator OFF: Air quality indicator is green
or the air conditioner is turned off.

Within 15 minutes after the air conditioner is
turned on, the ventilator will not operate even
though the air quality indicator is red.

28

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

8.9 About Cursor Key Which Points To “OFF” On Remote Control

When the ON/OFF button on the remote control is pressed, the cursor key which points to “OFF” will appear or
disappear to indicate the ON/OFF status of the air conditioner.

AUTO
HEAT

STD

COOL

DRY
OFF

For some reason (Ex. The signal of the remote control does not reach the signal receiver of the indoor unit.), the
display of the remote control will not correspond with the actual ON/OFF status of the indoor unit:

The air conditioner is running but the cursor key which points to “OFF” appears. The air conditioner can be

1.

stopped with any button (Except for “ON/OFF”, “TIMER SET”, “TIMER ON”) pressed.

The air conditioner is on standby, but the cursor key which points to “OFF” disappears. The air conditioner can

2.

be started with any button(Except for “ON/OFF”, “TIMER SET”, “TIMER OFF”) pressed.

AUTO

AUTO

FAN
SPEED

AIR

SWING

PRESS "OFF/ON" BUTTON

AUTO
HEAT
COOL

DRY
OFF

STD

AUTO

AUTO

FAN
SPEED

AIR

SWING

8.10. Indoor Fan Motor Control

Automatic fan speed control

When automatic fan speed set, the available range for fan speed is from Hi to Slo.

Manual Fan Speed Control

Basic fan speed can be manually adjusted (Lo, Med, Hi) by using the fan speed selection button.

Basic Fan Speed

Category

Cooling Mode

Operation

Soft Dry

Operation

Heating Mode

Operation

Manual

Auto

Manual

Auto

Manual

Auto

8.11. Auto restart control

If the operation is stopped due to a power failure u , it will restart automatically
un der the previous operation mode when the power supply is resumed.

Hi Me

SLo

Lo-

Lo

nder any operation mode

SSLo

29

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

8.12. Airflow Direction Control

Airflow Direction Auto-control

When set at airflow direction auto-control with remote control,the louver swings up and down as shown in the table below.

The louver does not swing when the indoor fan stops during operation.

When stop the unit with remote control,the discharge vent is closed with the louver.

When temperature of indoor heat exchanger reaches 38 during heating mode operation, if temperature falls to 35 ,airflow

direction will change from the lower limit to horizontal.

The left and right airflow direction louver can be adjusted manually.

Airflow direction manual control

When the airflow direction set button is pressed,the automatic airflow is released and the

airflow direction louver moves up and down as shown in thetable below. The louver can

be stopped by releasing the button at the desired position.

When the remote control is used to stop the operation,the discharge vent is closed with

airflow direction louver.

Angles Of Airflow Direction Louver

12 34 5

Operating Mode

Cooling

Manual

Soft dry

Auto

Manua

Heating

Auto

Determining operation

mode

oo o o o

12 17 26 32 36

oo

12 ~36

oo o o o

921 29 44 55

oo

9 ~55

o

9

Notes:

In heating mode operation

1.

Airflow direction automatic control:

Airflow direction is automatically adjusted to horizontal direction when the temperature of indoor heat exchanger is low and it will

be automatically adjusted downward while the indoor temperature rises.

2.

Airflow direction manual control:

The airflow direction is automatically adjusted to horizontal direction when temperature of indoor heat exchanger is low .While

temperature of indoor heat temperature rises ,the airflow direction is automatically adjusted to the place set by the remote control.

In cooling or soft dry mode operation

If the compressor continues to operate for 60 minutes ,and the louver direction is at No 5,the fan speed is below Med, the intake

air temperature is below 29 and continues to change between 2 for 30 minutes ,the louver direction will be at No 2 in order

to prevent dew around the discharge vent.

30

CS-PC12DKD/ CU-PC12DKD/ CS-PA12DKD / CU-PA12DKD

9 Installation Instructions

Required tools for Installation Works

1. Philips screw driver 5. Spanner 9. Gas leak detector 13. Multimeter

2. Level gauge 6. Pipe cutter 10. Measuring tape 14. Torque wrench

3. Electric drill, hole core drill
(ø70 mm)

4. Hexagonal wrench (4 mm) 8. Knife 12. Megameter 16. Gauge manifold

7. Reamer 11. Thermometer 15. Vacuum pump

9.1. Safety Precautions

Read the following "SAFETY PRECAUTIONS" carefully before installation.

Electrical work must be installed by a licensed electrician.

The caution items stated here must be followed because these important contents are related to safety. The meaning of each
indication used is as below. Incorrect installation due to ignoring of the instruction will cause harm or damage, and the
seriousness is classified by the following indications.

This indication shows the possibility of causing death or serious injury.

18 N.m (1.8 kgf.m)
42 N.m (4.2 kgf.m)
55 N.m (5.5 kgf.m)

This indication shows the possibility of causing injury or damage to properties only.

The items to be followed are classified by the symbols:

Symbol with background white denotes item that is PROHIBITED from doing.

Carry out test running to confirm that no abnormality occurs after the installation. Then, explain to user the operation, care and
maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference.

1. Engage dealer or specialist for installation. If installation done by the user is defective, it will cause water leakage, electrical shock or fire.

2. Install according to this installation instruction strictly. If installation is defective, it will cause water leakage, electrical shock or fire.

3. Use the attached accessories parts and specified parts for installation. Otherwise, it will cause the set to fall, water leakage, fire or
electrical shock.

4. Install at a strong and firm location which is able to withstand the set• sweight. If the strength is not enough or installation is not properly
done, the set will drop and cause injury.

5. For electrical work, follow the local national wiring standard, regulation and this installation instruction. An independent circuit and single
outlet must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire.

6. Use the specified cable (1.5 mm2) and connect tightly for indoor/outdoor connection. Connect tightly and clamp the cable so that no
external force will be acted on the terminal. If connection or fixing is not perfect, it will cause heat-up or fire at the connection.

7. Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will
cause heat-up at connection point of terminal, fire or electrical shock.

8. When carrying out piping connection, take care not to let air substances other than the specified refrigerant go into refrigeration cycle.
Otherwise, it will cause lower capacity, abnormal high pressure in the refrigeration cycle, explosion and injury.

9. When connecting the piping, do not allow air or any substances other than the specified refrigerant ( R22 ) to enter the
refrigeration cycle. Otherwise, this may lower the capacity, cause abnormally high pressure in the refrigeration cycle, and
possibly result in explosion and injury.

10.Do not modify the length of the power supply cord or use of the extension cord, and do not share the single outlet with

other electrical appliances. Otherwise, it will cause fire or electrical shock. if the power supply cord is damaged, engage an
authorized dealer to replace it.

31

CS-PC12DKD/ CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

1. The equipment must be earthed. It may cause electrical shock if grounding is not perfect.

2. Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at
surrounding of the unit, it may cause fire.

3. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the
furniture.

1. Selection of the installation location.
Select a installation location which is rigid and strong enough to support or hold the unit, and select a location for easy maintenance.

2. Power supply connection to the room air conditioner.
Connect the power supply cord of the room air conditioner to the mains using one of the following method.
Power supply point shall be the place where there is ease for access for the power disconnection in case of emergency.
In some countries, permanent connection of this room air conditioner to the power supply is prohibited.

1. Power supply connection to the receptacle using a power plug.
Use an approved 10A power plug with earth pin for the connection to the socket.

2. Power supply connection to a circuit breaker for the permanent connection. Use an approved 10A circuit breaker for the permanent
connection. It must be a double pole switch with a minimum 3 mm contact gap.

3. Do not release refrigerant.
Do not release refrigerant during piping work for installation, reinstallation and during repairing a refrigeration parts. Take care of the
liquid refrigerant, it may cause frostbite.

4. Installation work.
It may need two people to carry out the installation work.

5. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.

32

Attach ed access ories

Attached accessories.

No. Accessories part Qty. No. Accessories part Qty.

Installation plate

1

Installation plate fixing

screw

2

Remote control

3

C
A
N

F

C

A

NS
P
EE
D

1

5

A
UTO
C
O
O
DRY

L
F
A

O

N

F
F

MO
D
ET

h

S

r

T

DEL

*

O

D

A

FF

UT

A
O
Y

AU

O

N

T
O

F

O

A

S

F

E

N

P

F

M

O

E

A

E

P

F

IR

SW

D

F

/
O

I
N

N

E

G

L

TI
M

E
R

1

O
N

SE

A

T
I
RS

W
I
N

G

Battery

4

2

SELECT THE BEST LOCATION

INDOOR UNIT

There should not be any heat source or steam near the
unit.

There should not be any obstacles blocking the air
circulation.

A place where air circulation in the room is good.

ı

A place where drainage can be easily done.

ı

A place where noise prevention is taken into
consideration.

ı

Do not install the unit near the door way.

ı

Ensure the spaces indicated by arrows from the wall,
ceiling, fence or other obstacles.

ı

Recommended installation height for indoor unit shall be
at least 2.5 m.

OUTDOOR UNIT

ı

If an awning is built over the unit to prevent direct
sunlight or rain, be careful that heat radiation from the
condenser is not obstructed.

There should not be any animal or plant which could be
affected by hot air discharged.

Keep the spaces indicated by arrows from wall, ceiling,
fence or other obstacles.

Do not place any obstacles which may cause a short
circuit of the discharged air.

If piping length is over the common length, additional
refrigerant should be added as shown in the table.

Model

PC12DK

PA12DKD

Piping size

Liquid

Gas

1/2"

1/2"

1/4"

1/4"

Drain elbow
(Only for PA12DKD)

5

Connecting Wire (Connector)

(Only for PA12DKD)

6

Max. Piping

Max.

Elevation

Length

(m)

5

5

(m)

7

7

Additional

Refrigerant

(g/m)

-

-

CS-PC12DKD/ CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Indoor /Outdo or Unit Installa tion Diagra m

1

Indoor/Outdoor Unit Installation Diagram

Length of power supply cord

About 1.1 m

<

<

About 1.8 m

<

Piping direction Attention not to

Right

Right Rear

<

Right Bottom

Left

Rear

(Front side)

Left Bottom

bend up drain hose

Left

1

Installation parts you
should purchase ( )

5cm

or more

(Left and right are identical)

Insulation of piping connections

Carry out insulation
after checking for
gas leaks and
secure with vinyl
tape.

Vinyl tape

10 ZZ

or

more

100 cm

more

or

ı

ıı

5cm

or more

m

10 c

more

or

or mo

30

cm

r

Installation plate

Sleeve ( )

e

Bushing Sleeve ( )

This illustration is for explanation purposes only.
The indoor unit will actually face a different way.

1

Putty (Gum type sealer) ( )

Bend the pipe as closely on
the wall as possible, but be
careful that it doesn't break.

Vinyl tape (Wide) ( )

Apply after carrying out a
drainage test.
To carry out the drainage
test, remove the air filters
and pour water into the heat
exchanger.

Saddle ( )

Connecting cable
(3-CORE WIRE/1.5mm2)

PC12DKD

(5-CORE WIRE/1.5mm

2

+2X0.5mm )­Typedesignation 245 IEC 57
or heavier cord

PA12DKD

Additional drain hose ( )

1/4" Liquid side piping ( )

Gas side piping ( ) 1/2"

( )-

2

( )

33

CS-PC12DKD/ CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

9.2. INDOOR UNIT

9.2.1. SELECT THE BEST LOCATION

(Refer to “Select the best location”
section)

9.2.2. HOW TO FIX INSTALLATION
PLATE

The mounting wall is strong and solid enough to prevent it from
the vibration.

Wall

224mm

More than 450 mm

2

Screw

150 mm

B

Installation

plate

Measuring tape

1

More than 450 mm

A

125 mm

Wall

219 mm

9.2.3. TO DRILL A HOLE IN THE WALL
AND INSTALL A SLEEVE OF
PIPING

1. Insert the piping sleeve to the hole.

2. Fix the bushing to the sleeve.

3. Cut the sleeve until it extrudes about 15 mm from the wall.

Caution

When the wall is hollow, please be sure to use the
sleeve for tube ass’y to prevent dangers caused by
mice biting the connecting cable.

4. Finish by sealing the sleeve with putty or caulking
compound at the final stage.

The centre of installation plate should be at more than 450 mm
at right and left of the wall.

The distance from installation plate edge to ceiling should more
than 67 mm.

From installation plate left edge to unit’s left side is 74 mm.
From installation plate right edge to unit’s right is 94 mm.

B

:

For left side piping, piping connection for gas should be
about 45 mm from this line.

:

For left side piping, piping connecting cable should be
about 800 mm from this line.

1. Mount the installation plate on the wall with 5 screws or
more.
(If mounting the unit on the concrete wall consider using
anchor bolts.)

Always mount the installation plate horizontally by
aligning the marking-off line with the thread and using a
level gauge.

2. Drill the piping plate hole with ø70 mm hole-core drill.

Line according to the arrows marked on the lower left
and right side of the installation plate. The meeting point
of the extended line is the centre of the hole. Another
method is by putting measuring tape at position as
shown in the diagram above. The hole centre is
obtained by measuring the distance namely 105 mm
and 145 mm for left and right hole respectively.

Drill the piping hole at either the right or the left and the
hole should be slightly slanted to the outdoor side.

9.2.4. INDOOR UNIT INSTALLATION

For the right rear piping

1.

For the right and right bottom piping

2.

34

CS-PC12DKD/ CU-PC12DKD/ CS-PA12DKD / CU-PA12DKD

35

CS-PC12DKD/ CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

9.2.5. CONNECT THE CABLE TO THE
INDOOR UNIT

1. The inside and outside connecting cable can be connected

without removing the front grille.

2. Connecting cable between indoor unit and outdoor unit

shall be approved polychloroprene sheathed
(PA12DKD

x 1.5 mm ,

x 1.5 mm

)

2

type

2

flexible cord,

3 (PC12DKD)

designation 245 IEC 57 or heavier cord.

For PA12DKD, the attached wire 6 with two connectors
should be applied.

ııııˇ

Ensure the color of wires of outdoor unit and the
terminal Nos. are the same to the indoor’s respectively.

ı

Earth lead wire shall be longer than the other lead wires

ıı

as shown in the figure for the electrical safety in case of
the slipping out of the cord from the anchorage.

CS-PA12DKD

connector

CS-PC12DKD

Terminals on the indoor unit 1(L) 2(N)

Color of wires
Ter minals on the outdoor unit 1(L) 2(N)

(L) (N)

1 2 3 4

5

CS-PA12DKD

(L) (N)

ı

Secure the cable onto the control board with the holder

ıı

(clamper).

CS-PC12DKD

36

HOW TO TAKE OUT FRONT GRILLE

Please follow the steps below to take out front grille if
necessary such as when servicing.

1. Set the vertical airflow direction louver to the horizontal
position.

2. Slide down the two caps on the front grille as shown in the
illustration at right, and then remove the two mounting
screws.

3. Pull the lower section of the front grille towards you to
remove the front grille.

When reinstalling the front grille, first set the vertical
airflow direction louvre to the horizontal position and
then carry out above steps 2 - 3 in the reverse order.

CS-PC12DKD/ CU-PC12DKD/ CS-PA12DKD / CU-PA12DKD

9.3. OUTDOOR UNIT

9.3.1. SELECT THE BEST LOCATION
(Refer to "Select the best location"
section)

9.3.2. INSTALL THE OUTDOOR UNIT

After selecting the best location, start installation according
to Indoor/Outdoor Unit Installation Diagram.

1. Fix the unit on concrete or rigid frame firmly and horizontally
by bolt nut. (ø10 mm).

2. When installing at roof, please consider strong wind and
earthquake. Please fasten the installation stand firmly with
bolt or nails.

A

B

C

D

Model

CU-PC12DKD
CU-PA12DKD

ABCD

570 103.9

Unit: mm

13.3 320

AUTO SWITCH OPERA TION

The below operations will be performed by pressing the
"AUTO" switch.

1. AUTO OPERATION MODE
The Auto operation will be activated immediately once the

Auto Switch is pressed.

2. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING
PURPOSE)

The Test Run operation will be activated if the Auto Switch
is pressed continuously for more than 5 sec. to below 10
sec. A "pep" sound will occur at the fifth sec., in order to
identify the starting of Test Run operation

3. REMOTE CONTROLLER RECEIVING SOUND ON/OFF
The ON/OFF of Remote Controller receiving sound can be

changed over by pressing the "AUTO" Switch continuously
for 10 sec. and above. A "pep", "pep" sound will occur at the
tenth sec., in order to indicate the "ON/OFF" changed over
of remote control receiving sound.

9.3.3. CONNECTING THE PIPING

Connecting The Piping To Indoor Unit

Please make flare after inserting flare nut (locate at joint portion
of tube assembly) onto the copper pipe. (In case of using long
piping)

Connect the piping

Align the center of piping and sufficiently tighten the flare
nut with fingers.

Further tighten the flare nut with torque wrench in specified
torque as stated in the table.

Piping size (Torque)

Gas

1/2'' (55 N.m) 1/4'' (18 N.m)

Liquid

Connecting The Piping To Outdoor Unit

Decide piping length and then cut by using pipe cutter. Remove
burrs from cut edge. Make flare after inserting the flare nut
(located at valve) onto the copper pipe.

Align center of piping to valves and then tighten with torque
wrench to the specified torque as stated in the table.

37

CS-PC12DKD/ CU-PC12DKD/ CS-PA12DKD / CU-PA12DKD

CUTTING AND FLARING THE PIPING

1. Please cut using pipe cutter and then remove the burrs.

2. Remove the burrs by using reamer. If burrs is not
removed, gas leakage may be caused.

Turn the piping end down to avoid the metal powder
entering the pipe.

3. Please make flare after inserting the flare nut onto the
copper pipes.

9.3.4. (a) EVACUA TION OF THE EQUIPMENT (FOR EUROPE & OCEANIA DESTINATION)

WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the
following procedure.

1. Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way valve.
Be sure to connect the end of the charging hose with the push pin to the service port.

2. Connect the center hose of the charging set to a vacuum pump with check valve, or vacuum pump and vacuum pump adaptor.

3. Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 cmHg (0 MPa) to

-76 cmHg (-0.1 MPa). Then evacuate the air approximately ten minutes.

4. Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the gauge does not

move after approximately five minutes.
Note: BE SURE TO FOLLOW THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.

5. Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.

6. Tighten the service port caps of the 3-way valve at torque of 18 N.m with a torque wrench.

7. Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to • OPENŽusing a hexagonal

wrench (4 mm).

8. Mount valve caps onto the 2-way valve and the 3-way valve.
Be sure to check for gas leakage.

CAUTION

If gauge needle does not move from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa), in step 3 above take the following measure:
If the leak stops when the piping connections are tightened further, continue working from step 3.
If the leak does not stop when the connections are retightened, repair the location of leak.
Do not release refrigerant during piping work for installation and reinstallation. Take care of the liquid refrigerant, it may cause

frostbite.

38

CS-PC12DKD/ CU-PC12DKD/ CS-PA12DKD / CU-PA12DKD

9.3.5. (b) AIR PURGING OF THE PIPING AND INDOOR UNIT

The remaining air in the Refrigeration cycle which contains moisture may cause malfunction on the compressor.

1. Remove the caps from the 2-way and 3-way valves.

2. Remove the service-port cap from the 3-way valves.

3. To open the valve, turn the valve stem of 2-way valve counter-clockwise approx. 90° and hold it there for ten seconds, then
close it.

4. Check gas-leakage of the connecting portion of the pipings.
For the left pipings, refer to item 4(A).

5. To open 2-way valve again, turn the valve stem counter-clockwise until it stops.

4(A). Checking gas leakage for the left piping.

(1) **Connect the manifold gauge to the service port of 3-way

valve.
Measure the pressure.

(2) **Keep it for 5-10 minutes.

Ensure that the pressure indicated on the gauge is the
same as that of measured during the first time.

9.3.6. CONNECT THE CABLE TO THE OUTDOOR UNIT

1. Remove the control board cover from the unit by loosening the screw.

2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 3 (PC12DKD) or
5 (PA12DKD)

x 1.5 mm2flexible cord,

type designation 245 IEC 57 or heavier cord. For PA12DKD, the attached wire

6 should be applied.

CS-PC12DKD

Terminals on the indoor unit 1(L) 2(N)

Color of wires
Terminals on the outdoor unit 1(L) 2(N)

CS-PA12DKD

connector

3. Secure the cable onto the control board with the holder (clamper).

4. Attach the control board cover back to the original position with the screw.

9.3.7. PIPE INSULA TION

1. Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. Please wrap
the insulated piping end to prevent water from going inside the piping.

2. If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by using POLY-E FOAM
with thickness 6 mm or above.

39

CS-PC12DKD/ CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

DISPOSAL OF OUTDOOR UNIT DRAIN WATER

ı

If a drain elbow is used, the unit should be placed on a

ıı

stand which is taller than 3 cm.

ı

If the unit is used in an area where temperature falls below
0°C for 2 or 3 days in succession, it is recommended not to
use a drain elbow, for the drain water freezes and the fan
will not rotate.

Only for CU-PA12DKD:

CHECK THE DRAINAGE

ı

Open front panel and remove air filters.
(Drainage checking can be carried out without removing the
front grille.)

ı

Pour a glass of water into the drain tray-styrofoam.

ıı
ı

Ensure that water flows out from drain hose of the indoor

ıı

unit.

CHECK ITEMS

Is there any gas leakage at flare nut connections?

Has the heat insulation been carried out at flare nut
connection?

Is the connecting cable being fixed to terminal board firmly?

Is the connecting cable being clamped firmly?

Is the drainage OK?
(Refer to “Check the drainage” section)

Is the earth wire connection properly done?

Is the indoor unit properly hooked to the installation plate?

Is the power supply voltage complied with rated value?

Is there any abnormal sound?

Is the cooling operation normal?

Is the thermostat operation normal?

Is the remote control’s LCD operation normal?

Is the air purifying filter installed?

EVALU ATION OF THE PERFORMANCE

ı

Operate the unit for fifteen

minutes or more.

Measure the temperature of the intake and discharge air.

ı

Ensure the difference between the intake temperature and
the discharge is more than 8°C during cooling operation or

14°C during heating operation.

NOTE:

These equipment shall be connected to a suitable
mains network with a main impendance less than:

0.27ohm.

40

10 2-way,3-way Valve

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Works Shaft Position Shaft Position

Shipping Close Closed Closed

Air purging(Installation and Re-

installation)

Operation Open Open Closed

2-way Valve (Liquid Side)

(With valve cap)

Open Closed Open

(Counter-clockwise) (clockwise)

(Counter-clockwise)

(With valve cap)`

(With valve cap)`

3-way Valve (Gas Side)

Service Port

(With cap)

(Push-pin)

(With cap)

Pumping down

(Transferring)

Evacuation
(Servicing)

Charging
(Servicing)

Pressure check

(Servicing)

Gas releasing

(Servicing)

Closed Open Open

(Clockwise) (Counter-clockwise) (Connected manifold

Open

Open Open Open

Open Open (Connected manifold

Open Open

Open Open

(

gauge)

(With vacuum pump)

With charging cylinder)

Open

gauge)

Open

(Connected manifold

gauge)

41

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

10.1. Evacuation of Installation

When installing an air conditioner, be sure to evacuate the air inside the indoor unit and pipes in the following procedure.

Required tools:

Hexagonal wrench, adjustable wrench, torque wrench,
wrench to hold the joints, gas leak detector, charging set
and vacuum pump.

The air in the indoor unit and in the piping must be purged.
If air remains in the refrigeration piping, it will affect the
compressor , reduce cooling capacity, and could lead to a
malfunction.

Vacuum Pump

(Indoor unit)

Open

Low

(Liquid side)

(Gas side)

High

Closed

2-way
valve

3-way
valve

(Outdoor unit)

Open

Open

Service port cap

Be sure, using a torque wrench to tighten the service port cap(after using the service port),so that it prevents the gas leakage
from the refrigeration cycle.

Procedure:

.

1 Connect a charging hose with a push pin to the Low

side of a charging set and the service port of the 3-way
valve.

Be sure to connect the end of the charging hose with the

push pin to the service port.

2.Connect the centre hose of the charging set to a
vacuum pump.

3.Turn on the power switch of the vacuum pump and
make sure that the needle in the gauge moves from 0
cmHg (0 Mpa) to -76 cmHg (-0.1 Mpa). Then evacuate
the air for approximately 10 minutes.

4.Close the valve of the Low side of the charging set
and turn off the vacuum pump. Make sure that the
needle in the gauge does not move after approximately
5 minutes.
BE SURE TO TAKE THIS PROCEDURE IN ORDER TO

AVOID GAS REFRIGERANT LEAKAGE.

6.Tighten the service port caps of both the 3-way valve

and the 2-way valve at a torque of18 N.m with a torque

wrench.

7.Remove the valve caps of both the 3-way and the 2-way

valves.

Position both of the valves to using a hexagonal

“open”

wrench (4 mm).

8.Mount valve caps onto both of the 3-way valve and the

2-way valve.

Be sure to check for gas leakage.

Caution

If gauge needle does not move from 0 cmHg(0 Mpa) to -76cmHg
(-0.1MPa) in step (3) above, take the following measures:

If the leaks stop when the piping connections are tightened
further, continue working from step (3).

If the leaks do not stop when the connections are retightened,
repair the location of the leak.

5.Disconnect the charging hose from the vacuum pump
and from the service port of the 3-way valve.

42

10.2. Pumping down

(For Re-Installation)

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

(Indoor unit)

Closed

Low

High

(Liquid side)

(Gas side)

Closed

2-way
valve

3-way
valve

(Outdoor unit)

Closed

Open

Procedure

1.Confirm that both 2-way and 3-way valves are set to open

positions.

Remove the valve stem cap and confirm that the valve

stems are in the open position.

Be sure using a hexagonal wrench to operate the valve

stems.

2.Operate the unit for 10-15 minutes.

3.Stop operation and wait for 3 minutes, then connect the

charge set to the service port of the 3-way valve.

Connect the charge hose with the push pin to the

service port.

4.Air purging of the charge hose.

Open the low-pressure valve of the charge set slightly

to purge air from the charge hose.

5.Set the 2-way valve to the close position.

6. Operate the air conditioner at the cooling cycle and stop it

when the gauge indicates 2 G (0.1Mpa).

kg/cm

2

If the unit cannot be operated at the cooling mode

operation (weather is rather cold), short the Pumping

Down pins on the Main Control P.C.B.

7. Immediately set 3-way valve to the closed position.

Do this quickly so that the gauge ends up indicating

2

kg/cm G (0.1 to 0.3 Mpa).

1to3

8. Use refrigerant reclaiming equipment to collect refrigerant

from indoor unit and pipes.

9. Disconnect the charge set, and mount the 2-way and 3-way

valve stem s nuts and service port cap.

’

Use torque wrench to tighten the service port cap to a

torque 1.8kgf.m (18N.m).

Be sure to check for gas leakage.

10. Disconnect pipes from indoor unit and outdoor unit.

.

43

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

10.3.Re-air Purging

(Re-installation)

Vacuum Pump

(Indoor unit)

Open

Low

(Liquid side)

(Gas side)

High

Closed

2-way
valve

3-way
valve

(Outdoor unit)

Open

Open

1.Connect a charging hose with a push pin to the Low

side of a charging set and the service port of a 3-way

valves.

Be sure to connect the end of the charging hose with the

push pin to the service port.

2.

Connect the centre hose of the charging set to a

vacuum pump.

3.

Turn on the power switch of the vacuum pump and

make sure that the needle in the gauge moves from 0

cmHg (0 Mpa) to -76 cmHg (-0.1 Mpa). Then evacuate

the air for approximately 10 minutes.

4.

Close the valve of the Low side of the charging set

and turn off the vacuum pump. Make sure that the

needle in the gauge does not move after approximately

5 minutes.

BE SURE TO TAKE THIS PROCEDURE IN ORDER TO

AVOID GAS REFRIGERANT LEAKAGE.

5.Disconnect the charging hose from the vacuum pump

6.Charge the pipes and indoor unit with gas refrigerant

from 3-way valve service port, and then discharge the

refrigerant until low side ( gas side ) gauge needle

indicates 0.3 Mpa (3 kg/cm ).

2

7.Tighten the service port caps of both the 3-way valve

and the 2-way valve at a torque of 18 N.m with a

torque wrench.

8.Remove the valve caps of both the valves. Position

both of the valves to using a hexagonal wrench

"open"

(4 mm).

9.Mount valve caps onto both the valves.

BE SURE TO USE REFRIGERANT RECLAIMING

EQUIPMENT WHILE DISCHARGING THE

REFRIGERANT.

Purge the air from charge set’s centre hose.

Be sure to check for gas leakage.

Caution

If gauge needle does not move from 0 cmHg(0 Mpa) to -76cmHg
(-0.1MPa) in step (3) above, take the following measures:

If the leaks stop when the piping connections are tightened
further, continue working from step (3).

If the leaks do not stop when the connections are retightened,
repair the location of the leak.

44

10.4. Balance refrigerant of the 2-way,3-way walves

(Gas leakage)

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Vacuum pump

(Indoor unit)

Open

Low

(Liquid side)

(Gas side)

High

Closed

2-way
valve

3-way
valve

(Outdoor unit)

Open

Open

Procedure

1.

Confirm that both the 3-way valve and 2-way valve are

set to the open position.

Connect the charge set to the 3-way valve’s service

2.

port.

Leave the valve on the charge set closed.

Connect the charge hose with the push-pin to the

service port.

Confirm whether the pressure indicates more than 1

2

kg/cm G (0.1MPa).

3.Connect the charge set’s centre hose to refrigerant

reclaiming equipment.

4.

Open the valve (Low side) on the charge set and

discharge the refrigerant until the gauge indicates 0.05

MPa (0.5 kg/cm G) to 0.1 MPa (1 kg/cm G).

22

If there is no air in the refrigeration cycle (the pressure

when the air conditioner is not running is higher than 0.1

MPa (1 kg/cm G), discharge the refrigerant until the

gauge indicates 0.05 MPa (0.5 km/cm G) to 0.1 MPa (1

2

kg/cm G). If this is the case, it will not be necessary to

2

2

apply a evacuation.

Discharge the refrigerant gradually; if it is discharged

too suddenly, the refrigeration oil will also be

discharged.

Turn on refrigerant reclaiming equipment to collect the

5.

refrigerant until the needle indicates 0 (no refrigerant

is remaining).

45

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

10.5. Evacuation (Installation)

(No refrigerant in the refrigeration cycle)

Vacuum Pump

(Indoor unit)

Open

Low

(Liquid side)

(Gas side)

High

Closed

2-way
valve

3-way
valve

(Outdoor unit)

Open

Open

Procedure

1.

Connect the vacuum pump to the charge set’s centre hose.

2.

Evacuation for approximately 1 hour.

Confirm that the gauge needle has moved toward -76cmHg

(-0.1MPa) [vacuum of 4 mmHg or less].

3.

Close the valve ( Low side ) on the charge set, turn off the

vacuum pump, and confirm that the gauge needle does not

move (approximately 5 minutes after turning off the vacuum

pump).

4.

Disconnect the charge hose from the vacuum.

Vacuum oil

If the vacuum pump oil becomes dirty or depleted, replenish

as needed.

46

10.6. Gas charging

(After Evacuation)

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Charging
cylinder

(Indoor unit)

Open

Low

(Liquid side)

(Gas side)

High

Closed

2-way
valve

3-way
valve

(Outdoor unit)

Open

Open

Procedure

1.Connect the charge hose to the charging cylinder.

Connect the charge hose which was disconnected from

the vacuum pump to the valve at the bottom of the

cylinder.

If you are using a gas cylinder also use a scale and

reverse the cylinder so that the system can be charged

with liquid.

2.Purge the air from the charge hose.

Open the valve at the bottom of the cylinder and use a

screwdriver to press the check valve on the charge set

to purge the air.(Be careful of the liquid refrigerant.)

The procedure is the same if using a gas cylinder.

3 Open the valve (Low side) on the charge set and charge

.

the system with liquid refrigerant.

If the system cannot be charged with the specified

amount of refrigerant, it can be charge with a little at a

time (approximately 150g each time) while operating the

air conditioner in the cooling cycle.

However, one time is not sufficient, wait approximately

1 minute and then repeat the procedure. ( Pumping

down pin )

This is different from previous procedures. Because you are
charging with liquid refrigerant from the gas side, absolutely
do no attempt to charge with large amount of liquid refrigerant
while operating the air conditioner.

4.Immediately disconnect the charge hose from the

3-way valve’s service port.

Stopping part-way will allow the refrigerant to be

discharged.

If the system has been charged with liquid refrigerant

while operating the air conditioner, turn off the air

conditioner before disconnecting the hose.

5.Mount the valve stem nuts and the service port.

Use a torque wrench to tighten the service port cap

to a torque of 1.8kgf.m (18 N.m)

Be sure to check for gas leakage.

47

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

11 Disassembly of the parts

Removal Procedure For Intake Grille

1. Open the intake grille and pull it to the horizontal

position. (Fig. 1)

2. Pull up the intake grille until it falls off.(Fig. 2)

OpenerOpener

Fig. 1

Removal Procedure For Front Grille

1.Remove the two caps at the discharge port (right and

left) (Fig. 3)

2.Release the two screws under the both caps. (Fig. 4)

Fixing Screw

Fig. 2

Cap

Fig. 3

3.Pull out the front grille from the unit body. (Fig.5 )

Fig. 4

Front Grille

Fig. 5

48

Removal Procedure For Electronic Controller

1 Remove indicador complete

Afer removing the front grille, loose the screw behind the indicator,

the whole indicator can be released.

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

2 Remove the cover of control board and holder

3 Break off the earing ,release the holder slightly.

Be sure to avoid cracking of the holder.

4. Release the lead wire CN-FM, CN-VF, CN-STM, CN-DISP and

earth wire(Yellow/Green). Take out the sensor from the socket.

Pull out the whole electronic controller.

5. Remove the whole control board

Loose the screw s of control board,earings slightly, then the whole

control board can be pulled out.

Fig 6

Fig 7

Fig 8

Indicator Complete

Holder

Earing

Removal Procedure For the Discharge Grille

1. Separate the drain hose and the drain plate(Fig.10)

2. Pull out the discharge grille slightly (Fig. 11)

Fig 9

Fig 10

Fig. 11

49

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Removal Procedure For Cross Flow Fan

1.

Release the two fixing screws,disassembly the fixing board from

evaporator on the left side of the evaporator and pull out the whole

evaporator.

(Fig. 12)

2.Loose the fixing screw of the cross flow fan. (Fig. 13)

3.After removing the bearing (refer to fig14) , indoor fan can be

taken out from the left side.

fixing board

Screw

Fig. 12

Fixing Screw

Fig. 13

4. Lift up the indoor fan slightly, and then pull the fan motor out. Fig15

Remote control reset

If the display is chaotic or can not be adjusted,

Remove the back lid of the remote control

and you will find the resetting terminals and

shorten the two terminals using a screw driver

to reset.

Bearing

Fig 14

Fan motor

Fig 15

Resetting terminals

50

Fig 16

12 Troubleshooting Guide

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

12.1. Refrigeration cycle system

In order to diagnose malfunctions, make sure that there are no
electrical problems before inspecting the refrigeration cycle.
Such problems include insufficient insulation, problem with the
power source, malfunction of compressor or fan.
The normal outlet air temperature and pressure of the
refrigeration cycle depends on various conditions, the standard
values for them are shown in the table to the right.

More than 14

(15 minutes afte an

operation is started)

Difference in the

intake and outlet

air temperature

operation is started) at the cooling mode

at the heating mode

More than 8

(15 minutes afte an

Normal pressure and outlet air temperature(standard)

Gas side pressure

Mpa

(kg/cm G)

Cooling mode

Heating mode

Condition: indoor fan speed: high

0.4~0.6(4~6) 12~16

1.5~2.1(15~21)

outdoor temperature:
35 (Cooling mode)

7 (Heating mode)

2

Outlet air

temperature

Measuring the air
temperature difference

Normal

()

36~45

Less than 8 at the cooling mode.

Less than 14 at the heating mode.

Value of electric

current

during operation

Lower than specified

Gas side pressure

Higher than

specified

Cooling
mode

High

Low

Low

Low

Dusty heat exchanger

preventing heat radiation

Excessive amount

of refrigerant

Inefficient compressor

Insufficient refrigerant

clogged strainer or
capillary tube

Inefficient compressor

Measuring electric current
during operation

Measuring gas side
pressure

Heating
mode

Low

Low

Insufficient refrigerant

clogged strainer or
capillary tube

51

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

12.2. Relationship between the condition of air conditioner and pressrue

and electric current

Condition of the air

conditioner

Insufficient refrigerant

(gas leakage)

Clogged capillary

tube

Short circuit in the

indoor unit

Heat radiation deficiency

of the outdoor unit

Insufficient

compression

Low pressure

Cooling mode

High pressure

Electric current

during operation

Low pressure

Heating mode

High pressure

12.3. Diagnosis methods of a malfunction of a compressor .

Electric current

during operation

Nature of fault

Insufficient compressing

of a compressor

Locked compressor

Inefficient switches of

the 4-way valves

Symptom

Electric current during operation becomes approximately 80% lower
than the normal level.
The discharge tube of the compressor becomes abnormally hot
(normally 70~90 ).
The difference between high pressure and low pressure becomes
almost zero.

Electric current reaches a high level abnormally, and the value exceeds
the limit of an ammeter. In some cases, a breaker turns off.
The compressor has a humming sound.

Electric current during operation becomes approximately 20% lower than
the normal valve.
The temperature difference between from the discharge tube to the 4-way
valve and from suction tube to the 4-way valve becomes almost zero.

52

13 Technical Data

Thermostat characteristics

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Cooling mode

()

34

32

30

28

26

24

22

Intake Air temperature

20

18

16 18 20 22 24 26 28 30

16

Temperature setting

Compressor on

Compressor off=
Set temperature

1.5 in difference

()

Soft dry mode

()

34

32

30

28

26

24

22

Intake Air temperature

20

18

16 18 20 22 24 26 28 30

16

Temperature setting

Cooling on

Cooling off

set temperature=

Soft Dry off Soft Dry on

1.5 in difference

1.0 in difference

()

Heating mode (Only for CS-PA7DKD/CS-PA9DKD)

()

34

32

30

28

26

24

22

20

Intake Air temperature

18

16

16 18

20 22 24

26 28

30

Temperature setting

Compressor off=
Set temperature

Compressor on

Set temperature(diff. 0.5 )

2.0 in difference

()

53

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

Cooling characteristics

CS/CU-PA12DKD

3.7

3.5

3.3

3.1

Q: Cooling capacity (kW)

5.2

5.0

4.8

4.6

I: Current (A)

30

Outdoor temp( )
[Condition] Room temp: 27/19
Cooling operation:at high speed
Piping length:5m

34

32

CS/CU-PC12DKD

220V
230V

17
16
15
14
13

O:Outlet air temp( )

3.7

3.5

3.3

3.1

0.70

Q: Cooling capacity (kW)

0.65

0.60

0.55

0.50

pressure (Mpa)

LP: Gas side piping

5.2

5.0

4.8

4.6

I: Current (A)

42

36

44

30

32

36

34

40

38

40

38

Outdoor temp( )
[Condition] Room temp: 27/19
Cooling operation:at high speed
Piping length:5m

220V
230V

17
16
15
14
13

O:Outlet air temp( )

0.70

0.65

0.60

0.55

0.50

pressure (Mpa)

LP: Gas side piping

42

44

Heating characteristics

CS/CU-PA12DKD

4.0

3.8

3.6

2.8

Q: Heating capacity (kW)

5.0

4.9

4.8

4.7

I: current (A)

5

789

6

Outdoor temp( )
[Condition] Room temp: 27/19
Heating operation:at high speed

Piping length:5m

220V
230V

39

38

37

36

O:Outlet Air temp( )

1.8

1.7

1.6

Pressure (Mpa)

HP:Gas side piping

10

11 1 2

54

14 Exploded View

CS-PA12DKD
CS-PC12DKD

35

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

37

1

20

12

36

3

16

14

5

27

2

4

15

8

16

19

10

26

25

17

13

11

9

32

33

29

30

21

23

22

MODE TEMP

OFF

CANCEL SET

24

32

33

28

STD

OFF/ON

ON

TIMER

AIRSWING

FANSPEED

34

31

55

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

15 Replacement Parts List

CS-PA12DKD
CS-PC12DKD

No. DESCRIPTION&NAME Q'ty CS-PA12DKD CS-PC12DKD RE

1 CHASSIS COMPLETE 1 CWD50C1423 CWD50C1423

2 FAN MOTOR 1 CWA921098 CWA921098

3 CROSS FLOW FAN COMPLETE 1 CWH02C1036 CWH02C1036

4 EVAPORATOR 1 CWB30C1730 CWB30C1694

5 INTAKE AIR SENSOR HOLDER 1 CWT01C3457 CWT01C3425

6 PARTICULAR PIECE 1 CWD932454B CWD932454B

8 DISCHARGE GRILLE COMPLETE 1 CWE20C2406 CWE20C2406

9 AIR SWING MOTOR 1 CWA981091 CWA981091

10 DAIN ELBOW 1 CWH52160C CWH52160C

11 HORIZONTAL VANE

12 HORIZONTAL VANE

13 VERTICAL VANE 1 CWE24C1100 CWE24C1100

14 C-BOX 1 CWH14C4488 CWH14C4487

15 CONTROL BOARD 1 CWH102265 CWH102265

16 PARTICULAR PIECE 1 CWD932493J CWD932493J

17 POWER SUPPLY CORD COMPLETE 1 CWA20C2362 CW A20C2362

19 MAIN PCB 1 CWA743751 CWA743750

20 INDICATOR COMPLETE 1 CWE39C1124 CWE39C1124

21 INDICATOR HOLDER-FRONT 1 CWD932491 CWD932491

22 INDICATOR HOLDER-BACK 1 CW D932492 CWD932492

23 INDICATOR PCB 1 CWA743836 CWA743836

24 CONNECTING LEAD ( INDICATOR) 1 CWA67C3681 CW A67C3681

25 SENSOR COMPLETE 1 CWA50C2271J CWA50C2271J

26 CONTROL BOARD FRONT COVER 1 CWH131235 CWH131235

27 CONTROL BOARD TOP COVER 1 CWH131237 CWH131237

28 REMOTE CONTROL 1 CWA75C2712 CWA75C2710

29 FRONT GRILLE COMPLETE 1 CWE11C3210 CWE11C3210

30 FRONT GRILLE 1 CWE22K1255 CWE22K1255

31 AIR FILTER 2 CWD001153 CWD001153

32 SCREW-FRONT GRILLE 2 XTT4+16CFJ XTT4+16CFJ

33 CAP-FRONT GRILLE 2 CWH521109 CWH521109

34 DRAIN HOSE 1 CWH851074 CWH851074

35 OPERATING INSTRUTIONS 1 CWF564654 CWF564654

36 INSTALLATION INSTRUCTION 1 CWF612704 CWF612704

37 INSTALLATION PLATE 1 CW H361069 CWH361069

RIGHT 1 CWE24C1081 CWE24C1081

LEFT 1 CWE24C1082 CWE24C1082

Note:

1.All parts are supplied from GMAC, P.R. China.

2."*" marked parts are recommended to be kept in stock.

56

16 Exploded View

CU-PA12DKD
CU-PC12DKD

33

36

35

26

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

28

24

25

27

37

34

11

31

4

6

5

3

7

2

22

21

20

12

32

14

38

30

29

23

10

8

19

13

9

1

16

15

17

18

57

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

17 Replacement Parts List

CU-PA12DKD
CU-PC12DKD

No. DESCRIPTION&NAME Q'ty CU-PA12DKD CU-PC12DKD RE

1 BASE ASS'Y 1 CWD50K2124A CW D50K2122A

2 HOLDER-FAN MOTOR 1 CWD541020 CWD541020

3 SCREW-F.M. HOLDER 2 CWH551060J CWH551060J

4 FAN MOTOR 1 CWA951440 CWA951440

5 FIXING SCREW-FAN MOTOR 4 CWH55406J CWH55406J

6 PROPELLER FAN 1 CWH03K1010 CWH03K1010

7 NUT-P.FAN 1 CW H561036J CWH561036J

8 COMPRESSOR 1 CWB092281 CWB092281

9 MOUNT RUBBER(COMP.) 3 CWH50077 CWH50077

10 NUT-COMP.MOUNT 3 CWH561047A CWH561047A

11 CONDENSER 1 CWB32C1567 CWB32C1578

12 TUBE ASS'Y(RECEIVER) 1 CWT01C3357 CWT023639

13 HOLDER-COUPLING 1 CWH351017 CWH351017

14 4-W AY VALVE 1 CWB001048 --------

15 2-W AY VALVE 1 CWB021247 CWB021260

17 3-W AY VALVE 1 CWB011312 CWB011323

19 STRAINER 1 CWB111026 CW'B111026

20 OVER LOAD PROTECTOR 1 CW A121218 CWA121218

21 TERMINAL COVER 1 CWH17006 CWH17006

22 NUT-TERMINAL COVER 1 CW7080300J CW7080300J

23 SOUND PROOF PANEL 1 CWH151113 CWH151113

24 CONTROL BOARD 1 CWH102270 CWH102270

25 TERMINAL BOARD ASS'Y 1 CWA28K1104 CWA28K1105

26 CAPACITOR-COMPRESSOR 1 CW A312150 CWA312150

27 HOLDER-CAPACITOR 1 CWH30165 CWH30165

28 CAPACITOR-FAN MOTOR 1 CWF0GAG3060001 CWF0GAG3060001

29 TUBE ASS'Y(CAPILLARY) 1 CWT01C3357 CW T01C3409

30 CAPILLARY 1 CW B15563 CWB15418

31 SENSOR 1 CW A50C2276 --------

32 V-COIL COMPLETE 1 CWA43C2176 --------

33 SURFACE COVER 1 CW E03C1033 CWE03C1033

34 CABINET FRONT PLATE 1 CWE06C1116 CWE06C1116

35 CABINET SIDE PLATE(R) 1 CWE041116A CW E041116A

36 CABINET SIDE PLATE(L) 1 CWE041118A CWE041118A

37 CONTROL BOARD COVER 1 CWH13C1119 CWH13C1119

38 CONNECT WIRE-SENSOR 1 CWA22C1022 --------

Note:

1.All parts are supplied from GMAC, P.R. China.

2."*" marked parts are recommended to be kept in stock.

58

0

2

0

2

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

AC 220V/230vV, 50Hz

1

3

4

4

RY-PWR
K6BIAGA00076

FUSE

2

3

5

6

7

3.15A250V

10

9

11

ZNR2

ERZV10D511

250VAC

C16

0.1

ECQ

3

5

FUSE

F

1

2

E

OUT-TH1

YELLOW

TF

RED

D

BLUE

AC(WHT)

HOT(RED)

FM(BLU)

OUT-TH2

5

3

1

CN-FM
VH5-3
(WHT)

12

13

14

CR1

2

16

15

1

20

4

5

C28

25

3

17

RY-HOT

C13

ZNR1

2

21

2

CT

SSR2

3

R43

D15

R9

1K

C27

R8

15.8K
1%

27

28

1.5u

400V

C-FM

0.047

L5

22

1

ERZV10D511

2

1

L1

A431036

26

ZNR3

C17

2

0.047u

1

250VAC

ECQ

SSR1

2

D11

24

D10

C23

R44

1

23

Fan Motor

B1HBGFF000

5V

1

10

11

12

13

14

15

16

WHITE
BROWN
BLACK

C

3
2
1

CN-FB
XH3
(WHT)

5
4
3
2
1

5

4
3
2
1

CN-STM1
PH5
(WHT)

CN-STM2
PH5
(YLW)

R21

C8

1K

0.01U

30
31
32
33

34
35
36
37

R7
43

41

1/2W

42

16

R6

R37
270
2WS

49

48

QS

2SC3441

R36

B

10K

RY-PWR

1

K6BLAGA00076

R35

2K

43

15

1/2W

2

14

43

13

47

1

46

11

45

1

44

TABLE 2

Number

0

1

2

3

12

Jp1

JUMPER
JUMPER

NONE

JUMPER

Jp2 Rx

JUMPER

NONE

NONE 10K
NONE 10K

Electronic Controller

3

4

59

0

e

P50
P51
P52
P53
P54
P55
P56
P57
Vss0
Vdd0
P30
P31
P32
P33
P34
P35

P71

T00

P03
INTP2
INTP1
INTP0

Vss1

X1
X2

IC
Xt1
Xt2

RESET

P80
Avrof
An10

P47

P16

P45

P44

P43

P42

P41

P40

P67

P66

P65

P64

BUZ

P74

P73

P72

P36

Sl30

So30

SCK30

P23

P24

P25

Vdd1

Avss

ANI7

ANI6

ANI5

ANI4

ANI3

ANI2

ANI1

IC 1

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

50

T01

10

8

R45

12K

D1

149

C29

0.1u

2

DB01

1

4

C1

3

A55C2412KTX

128

R48

1.2K

3300U
35V

150

Q1

51

R46

12K

D2

R47

1.3K

53

IC3

1

12V

3

R49
1K

R50

1K

C18

0.01U

Ic2

1

2

C19

470u

25V

2

5V

3

54

55

56

12V

57

58

C2
100U
16V

5V

12V

430

R29

R53

1.5K
1/4W

76

71

70
140
141
142

3

R34

Q4

10K

1

148

2

C6

0.01u

B1GDCFGA0007

65

BIGDCFGA0007

5V

1

Q2

10K

2

4.7K

3

1

Q3

10K

2

4.7K

3

620

R28
R27

430

R31

1/8W

620
680

R30

1/8W

5V

C30

0.01

CN-DISP

(YLW)

1
2
3
4
5
6
7
8
9
10
11

143

144
145

146

147

12V

3

ZD1
A54D5.1MTB1

2

130

R55

11K

129

R56

6.2K

C20

0.01U

2V

9

5

71C7G

61C7F

51C7E

41C7D

31C7C

21C7B

11C7A

8

A43BL18AG121

R11
10K

ICS

ICSA

1

2ICSB

3ICSC

4ICSD

5IICSE

6IC5F

7IC5G

L3

C21

16V

100V
NHG

L4

A43BL18AG121

60
61
62
63
64

66
67

10

69

JP3

72
73
15

JP4

38

75

68

74

R16
10K

R10

10K

117

118

116

115

114

113

112

111

108

106

110

109

105
119
120

60

P47

P16

P45

P44

P43

P50
P51
P52
P53
P54
P55
P56
P57
Vss0
Vdd0
P30
P31
P32
P33
P34
P35

A52D 0076 0648

P36

Sl30

So30

SCK30

P23

20

77

82

R20

78

79

80

10K

132

C7
16V

0.1U

R41
10K

1

5

81

107

55

50

P42

P41

P40

P67

P66

P65

P64

P74

P73

P72

BUZ

P71
T00

P03
INTP2
INTP1

Vdd1

25

84

Avss

ANI7

ANI6

86

85

IC4

NC NC

VCC CND

CS DO

SK DI

INTP0

Vss1

Xt1
Xt2

RESET

P80

Avrof
An10

ANI5

ANI4

ANI3

ANI2

ANI1

30

77

89

90

88

87

8

7

6

5

R26

133

10K

IC 1

P24

P25

83

18

1

2

3

4

R42
10K

104
103
102

45

X1

40

X2

96

IC

JP10

95

39

C14
47U
16V

19

10K

R14

R40

10K

0.01u

C26

101
100
99

98
97

R3

3

150K

8MHZ

93

92

91

C12
16V

10.1u

C5

0.01u

X1

2

JP2

R32

10.0K
1%

C22
16V

94

0.1U

C4
1U
10V

R17

1

2

3

4

5

6

7

9

8

C24

3.3U
50V
KRE

IC6
B1HBGFF00005

16IC6A

151C6B

141C6C

131C6D

121C6E

111C6 F

101C6G

R24

1K

R57

330K

RX

R18
10K

121

122

123

124

R51 10K

R19

24K

A48TFM25E

R54

10K

127

126

125

RY-HOT

1

SSR3

4

SSR2

4

SSR1

4

C11

0.01U

134

Jp7

Jp6

BZ

R52

1K

R53
33K

12V

4

3

3

3

131

R58
10K

5V

SW101

5V

1
2
3

138

R22

5.1K

R23 10K

C10
3300P

R4

200

4

139

137

F5

10K

CN-VF
Ph4
(WHT)

CN-VF
Ph4
(WHT)

Int

C25

Piping Temp Sensor

(20K 3950)

56

CN-TH
PHB

7

R1

R2
20K
1%

2

3

C15

15K

1%

1

(WHT)

8910

60

CN-DISP

(YLW)
PH11

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

OXYGEN/CLAM

GRN

D101

C201

R201

100

22u

6.3V

AIR TEMP SENSOR

(15K 3950)

TIMER

ORG

D103

OFF/0N

GRN

D102

3

1

SEN2

2

1

3

Vcc
Vout

2

1

GND
5
4

D104

2

3

4

IC201

R

PD

1
2
3
4
5
6
7
8
9
10
11

Receiver

1

2
3
4

SSR

AC1

M

erlocking Ventilator Unit(Optional)

TABLE1

REMARK

CODE N0.

C13

C23

C27

C28

CR1

CN-STM2

CT

D10

D11

D15

FM(BLU)

HOT(RED)

JP3

JP4

L5

OUT-TH1
OUT-TH2

R8

R9

R17

R43

R44

RX

RY-HOT

SSR2

SSR3

ZNR1

ZMR3

ZMR4

IC4

CS/CU-PC12DKD

A743750

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

A53D0878

CS/CU-PA12DKD

A743751

ECQU2A473A05

NONE

ECA1CHG101B

ECJIVF1A105Z

JOHBJY000004

NONE

NONE

NONE

NONE

BOACCK000005

A67C3830

A67C3843

NONE

NONE

A431090

A67C5001

ERJ3EKF1582V

ERJ3GEYJ102V

NONE

NONE

NONE

NONE

K6B1AGA00073

A56G3MC202PL

NONE

NONE

NONE

NONE

A53D0877

11 12

61

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

62

CS-PC12DKD / CU-PC12DKD / CS-PA12DKD / CU-PA12DKD

63