Panasonic CS-PA7DKD, CS-PC7DKD, CS-PA9DKD, CS-PC9DKD, CU-PA7DKD Service Manual

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Order No. GMAC0504036C3

Room Air Conditioners

CS/CU-PA7DKD CS/CU-PC7DKD

STD

MODE TEMP

OFF

CANCEL SET

FANSPEED

OFF/ON

TIMER

AIRSWING

CS/CU-PA9DKD CS/CU-PC9DKD

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

1 Features 2

2 Functions 3

3 Product Specifications 6

4 Dimensions 14

5 Refrigeration Cycle Diagram 16

6 Block Diagram 17

7 Wiring Diagram 19

8 Operation Details 21

Installation

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WARNING

Page Page

10 2-way,3-way Valve

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

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CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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 Functions

Remote Control

STD

MODE TEMP

OFF/ON

OFF

CANCEL SET

TIMER

FANSPEED

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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 PA7DKD,PA9DKD)

Cooling Mode Operation

Soft Dry Mode Operation

Air Circulation Mode Operation

(For PC7DKD,PC9DKD)

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.

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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 PA7DKD, PA9DKD 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.

Outdoor Unit

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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 150

(PA7DKD,PC7DKD,PA9DKD) or

(PC9DKD)

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 PA7DKD,PA9DKD 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

(Only for PA7DKD,PA9DKD)

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 PA7DKD,PA9DKD only)

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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

L/h

Phase

Cycle

OUTLET

INTAKE

m /min

dB(A)

W/W

Inch Inch

mm mm mm

W rpm rpm

rpm

CS-PA7DKD CU-PA7DKD

2.10

2.30

1.2

Single

220

SIDE VIEW

TOP VIEW

7.40

8.66

9.50

Cooling:high37,Low29 Heating:high37,Low29

Cooling:high47 Heating:high48

Cooling:695 Heating:620

Cooling:3.40 Heating:3.00

Cooling:3.02 Heating:3.71

G:half union3/8" L:half union1/4"

G:gas side3/8" L:liquid side1/4"

G:3-way valve3/8" L:2-way valve1/4"

G:gas side3/8" L:liquid side1/4"

0.5

3 core-wire/1.0mm

1.3

250 770 205

530 650 230

7.5

Cross-flow fan

Induction(4 pole)

Rotary(1 cylinder) Rolling piston type

Induction(2 pole)

600

Propeller fan

Induction(6 pole)

880 60 1030 60 1130 50

800 60

Heat Exchanger

Description Tube Material Fin Type

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Unit CS-PA7DKD CU-PA7DKD

Evaporator

Copper

Slot type

Condenser

Copper

Corrugation type

Rows/Stage

(Plate fin configuration,forced draft)

2x12

FPI

Dimensions

Refrigerant Control Device Refrigeration Oil

Refrigerant (R-22) Thermostat Protection Device

Length

Capillary

Circulation Inner Diameter

Air Filter

(c.c)

Electronic Control

mm L/min mm

P.P. Honeycomb

610x252x25.4

Refrigerant Circulation Control Device Compressor Capacitor Fan Motor Capacitor

F,V F,V

1.5

F , 400V

* 60g for air purging is not included.

Specifications are subject to change without notice for further improvement.

1X24

269.1x504x18.19 Capillary Tube

SUNISO 4GDID or ATMOS

M60 or ATMOS 56M

530(*)

O.L.P.(230V,30A)

655 20

9.5 0.2

1.4

Capillary

20 370V

F,2.0 400V

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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

L/h

Phase

Cycle

OUTLET

INTAKE

m /min

dB(A)

W/W

Inch Inch

mm mm mm

W rpm rpm

rpm

CS-PA9DKD CU-PA9DKD

2.60-2.65

3.00-3.05

1.40

Single

220/230

SIDE VIEW

TOP VIEW

7.72

8.54

10.10

Cooling:high38,Low29 Heating:high38,Low29

Cooling:high47 Heating:high48

Cooling:830-850 Heating:790-820

Cooling:3.90-3.80 Heating:3.65-3.65

Cooling:3.13-3.12 Heating:3.80-3.72

G:half union3/8" L:half union1/4"

G:gas side3/8" L:liquid side1/4"

G:3-way valve3/8" L:2-way valve1/4"

G:gas side3/8" L:liquid side1/4"

0.5

3 core-wire/1.0mm

1.3

250 770 205

530 650 230

7.5

Cross-flow fan

Induction(4 pole)

Rotary(1 cylinder) Rolling piston type

Induction(2 pole)

700

Propeller fan

Induction(6 pole)

940 60 1090 60 1230 60

800 60

Heat Exchanger

Description Tube Material Fin Type

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Unit CS-PA9DKD CU-PA9DKD

Evaporator

Copper

Slot type

Condenser

Copper

Corrugation type

Rows/Stage

(Plate fin configuration,forced draft)

2x12

FPI

Dimensions

Refrigerant Control Device Refrigeration Oil

Refrigerant (R-22) Thermostat Protection Device

Length

Capillary

Circulation Inner Diameter

Air Filter

(c.c)

Electronic Control

mm L/min mm

P.P. Honeycomb

610x252x25.4

Refrigerant Circulation Control Device Compressor Capacitor Fan Motor Capacitor

F,V F,V

1.5

F , 400V

* 60g for air purging is not included.

Specifications are subject to change without notice for further improvement.

2X24

569.1

X504x36.38

540.5

Capillary Tube

SUNISO 4GDID or ATMOS

M60 or ATMOS 56M

860(*)

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

609 10

10.0 0.2

495 20

9.0 0.2

1.4

Capillary

F,30 370V F,2.0 400V

1.3

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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

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

Unit

L/h

Phase

Cycle

OUTLET

INTAKE

m /min

dB(A)

W/W

Inch inch

m m

mm mm mm

W W

rpm rpm

rpm

CS-PC7DKD CU-PC7DKD

2.10

1.20

Single

220

SIDE VIEW

TOP VIEW

4.9

5.7

6.8

High36,Low28

High47

680

3.20

3.09

G:half union3/8" L:half union1/4"

G:gas side3/8" L:liquid side1/4"

G:3-way valve3/8" L:2-way valve1/4"

G:gas side3/8" L:liquid side1/4"

0.5

1.3

3 core-wire/1.0mm

250 770 205

530 650 230

7.5

Cross-flow fan

Induction(4 pole)

Rotary(1 cylinder) Rolling piston type

Induction(2 pole)

660

Propeller fan

Induction(6pole)

13 810 60 940 60

1130 60

800 60

Heat Exchanger

Description Tube Material Fin Type

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Unit CS-PC7DKD CU-PC7DKD

Evaporator

copper

slot type

Condenser

copper

Corrugation type

Rows/Stage

(Plate fin configuration,forced draft)

2x8 1x24

FPI

Dimensions

Refrigerant Control Device

Refrigeration Oil

Refrigerant (R-22) Thermostat Protection Device

Length

Capillary

Circulation Inner Diameter

Air Filter

(c.c)

Electronic Control

mm L/min mm

P.P Honeycomb

610x168x25.4

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.

575.8x504x12.7

Capillary Tube SUNISO 4GDID or ATMOS M60(M56)

450(*)

O.L.P.(25A/230V)

810 10

7.0 0.2

1.3

Capillary

F,20 400V F,2.0 400VF,1.5 400V

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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

L/h

Phase

Cycle

OUTLET

INTAKE

m /min

dB(A)

CS-PC9DKD CU-PC9DKD

2.50

1.40

Single

220 / 230

SIDE VIEW

TOP VIEW

6.5

7.4

8.5

High30,Low28

High48

860

4.00

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

Inch inch

m m

mm mm mm

W W

rpm rpm

rpm

G:half union3/8" L:half union1/4"

G:gas side3/8" L:liquid side1/4"

0.5

1.3

3 core-wire/1.0mm

250 770 205

7.5

Cross-flow fan

Induction(4 pole)

13 870 60 980 60

1130 60

2.91

20.0

G:3-way valve3/8" L:2-way valve1/4"

G:gas side3/8" L:liquid side1/4"

530 650 230

Rotary(1 cylinder) Rolling piston type

Induction(2 pole)

750

Propeller fan

Induction(6pole)

800 60

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Unit CS-PC9DKD CU-PC9DKD

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

Air Filter

(Plate fin configuration,forced draft)

(c.c)

mm L/min mm

Evaporator

copper

slot type

2x12

610x252x25.4

Electronic Control

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.

Condenser

copper

Corrugation type

1x24

575.8x504x12.7

Capillary Tube SUNISO 4GDID or ATMOS M60(M56)

430(*)

O.L.P.(30A/230V)

590 20

10.1 0.2

1.4

Capillary

F,25 370V F,2.0 400VF,1.5 400V

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

4 Dimensions

Indoor Unit

Unit : mm

Side view

Left Piping Hole

Air intake

Air outlet

Front View

250

770

Installation Plate Hook

Gas Side

165

Liquid Side

205

CANCEL

FANSPEED

Right Piping Hole

STD

TEMP

MODE

OFF/ON

OFF

TIMER

AIRSWING

125

SET

(79)

(410)

(43)

Drain Port

Relative position between the unit and the installation plate (Front View)

229

118.8

15.5

26.5

(382)

(452)

(680)

15.5

26.5

109.2

144.2

16.5

Outdoor Unit

CU-PA7DKD

CU-PA9DKD CU-PC7DKD CU-PC9DKD

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Unit : mm

Required space for installation

10cm

100cm

668

650

Air intake

Air outlet

61.6

250

230

88 88

650

61.6

62.2

123.8

530

55.8

293

INTAKE AIR SENSOR

PIPING SENSOR

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

5 Refrigeration Cycle Diagram

CS/CU-PA7DKD CS/CU-PA9DKD

AIR QUALITY SENSOR

INTAKE AIR SENSOR

PIPING SENSOR

4-way valve

Cooling

Heating

CS/CU-PC7DKD CS/CU-PC9DKD

INTAKE AIR

AIR QUALITY SENSOR

SENSOR

PIPING SENSOR

6 Block Diagram

CS-PA7DKD/CU-PA7DKD CS-PA9DKD/CU-PA9DKD

O.L.P.

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Compressor

OUTDOOR UNIT

INDOOR UNIT

4-Valve

SSR202

RY-HOT

Remote

CR201

SSR201

Control

RY-PWR

Piping Sensor

FUSE

Receiver

POWER SUPPLY

Indicator

Sensor

For PA7DKD, the power source is 220V. For PA9DKD, the power source is 220V-230V .

AC220V-230V 50Hz

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

CS-PC7DKD/CU-PC7DKD CS-PC9DKD/CU-PC9DKD

Compressor

RY-PWR

FUSE

Remote

Control

Receiver

POWER SUPPLY

AC220V-230V 50Hz

SSR201

Indicator

Sensor

For PC7DKD, the power source is 220V. For PC9DKD, the power source is 220V-230V .

POWER SUPPLY

CORD

AC 220V-230 50Hz( )

7 Wiring Diagram

CS-PA7DKD/CU-PA7DKD CS-PA9DKD/CU-PA9DKD

Remote Control

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

POWER SUPPLY

AC 220V-230 50Hz( )

INDOOR UNIT

TERMINAL BOARD

Signal Receiver

CORD

1(L) 2(N) 3 4

CN-RCV

Y/G

102 250V 3A

AUTO SWITCH

FUSE

ELECTRONIC CONTROLLER

STEPPING

MOTOR

FAN MOTOR

FUSE

1234

Y/G

SENSOR(PIPING TEMP.)

SENSOR(INTAKETEMP.)

INDOOR UNIT

OUTDOOR UNIT

TERMINAL BOARD

COMPRESSOR

1(L) 2(N) 3 4

Y/G

CAPACITOR

FAN MOTOR

CAPACITOR

OUTDOOR UNIT

INDOOR FAN MOTOR RESISTANCE( )

CS-PA7DKD CS-PA9DKD

CONNECTING

Y-B M

Y-R A

COMPRESSOR RESISTANCE( )

CWA921308 CWA921329

395

325

390

R : RED BL : BLACK

YELLOW

B : BLUE BR : BROWN O : ORANGE

SENSOR(PIPING TEMP.)

BLUE

TRADE MARK

RED

COMPRESSOR TERMINAL

OUTDOOR FAN MOTOR RESISTANCE( )

GRY : GREY G : GREEN Y : YELLOW W : WHITE

Y/G : YELLOW/GREEN

P : PINK

CU-PA7DKD CU-PA9DKD

CONNECTING

Y-B

Y-R

CWA951419 CWA951419

275

260

275

260

CONNECTING

C-R

C-S

CU-PA7DKD CU-PA9DKD

CWB092128

3.678

7.240

CWB092312

3.466

3.843

For PA7DKD, the power source is 220V. For PA9DKD, the power source is 220V-230V .

POWER SUPPLY

CORD

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

AC 220V-230 50Hz( )

CS-PC7DKD/CU-PC7DKD CS-PC9DKD/CU-PC9DKD

REMOTE CONTROL

SIGNALRECEIVER

POWER SUPPLY

CORD

AC 220V-230 50Hz( )

INDOOR UNIT

TERMINAL BOARD

OUTDOOR UNIT

TERMINAL BOARD

FAN MOTOR

CAPACITOR

FUSE

102 250V 3A)

OUTDOOR UNIT

O.L.P

INDICATOR

CN-DISP

AUTO SWITCH

(SW 01)

Y/G

Capacitor

COMPRESSOR

Y/G

OUTDOOR UNIT

ELECTRONIC CONTROLLER

CN-RCV

P(3)

L(4)

CN-DISP

RY-PWR

FUSE

Y/G

L01

C03

C-FM

SSR01

C19

ZNR01

1234

YELLOW

BLUE

TRADE MARK

T01

COMPRESSOR TERMINAL

CN-FM

CN-STM

CN-FB

CN-AIR1 CN-TH

CN-AIR2

SENSOR(PIPING TEMP.)

SENSOR(INTAKETEMP.)

FAN MOTOR

STEPPING MOTOR

INDOOR UNIT

R : RED BL : BLACK B : BLUE

RED

BR : BROWN O : ORANGE GRY : GREY G : GREEN Y : YELLOW W : WHITE Y/G : YELLOW/GREEN P : PINK

INDOOR FAN MOTOR RESISTANCE( )

CS-PC7DKD CS-PC9DKD

CONNECTING

Y-B M

Y-R A

COMPRESSOR RESISTANCE( )

CWA921308

395

325

CU-PC7DKD CU-PC9DKD

CONNECTING

C-R

C-S

CWB092129

4.307

7.668

CWA921329

390

CWB092279

3.072

5.216

OUTDOOR FAN MOTOR RESISTANCE( )

CU-PC7DKD CU-PC9DKD

CONNECTING

Y-B

Y-R

CWA951427

275

260

For PC7DKD, the power source is 220V. For PC9DKD, the power source is 220V-230V .

CWA951427

275

260

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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.

Indoor Fan

STOP

Slow

STOP STOP

Slow Slow

4 minutes

Compressor ceases

Restart

40 30 40 3020 160

Compressor

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.

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Time Graph for Cooling Operation

Intake air temperature

Set temperature

1.5

Basic Time

Comp.

Indoor Fan

Outdoor Fan

abcdefghi j klmnopqrstuvwxyz

Start

Stop

1’

4’

1 1

Evaporater temperature

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)

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.)

Automatic Fan Speed

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

CS-PA7DKD/CU-PC7DKD / CS-PC7DKD/CU-PC7DKD

Lo-

Slo

Indoor fan

OFF

Compressor

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

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

Super

Slo Slo Slo Slo

Low

Super

Low

Slo Slo

Slo Slo Slo

Time

10 C

666

Slo

Cooling mode operation

Soft Dry Mode operation

Operate

Stop

Super Low

Indoor Fan

Stop

Indoor Heat Exchanger

()

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

8.3. Heating Mode Operation(Only for PA7DKD,PA9DKD)

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 .

Indoor Heat Exchanger

()

Low

Super Low

Indoor Fan

Stop

Automatic Fan Speed

S Lo

()

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

Lo-

()

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Temperature of heat exchanger

Time Graph for Heating Operation

abcdefghi jk

Indoor heat exchanget Temp.

Intake Temp.

OFF

Basic Time

Compressor

Indoor Fan

Outdoor Fan Operation Indicator

4-way valve

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

Warm booting control(indoor fan Off)

Warm booting control(indoor fan Super Slo)

Prevent cool airEORZLQJRXW

Stop

30'

58''

Tim e

nop qr

Manual fan speed

Blink

Operate

Stop

150'

Deicing Operation Time(T)

min

3min T 7min

min T 9min

T 9min

Td(s)

120

180

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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)

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

max60'

nopq r s t uvwxy z

max12'

Slo

Blink

Operat io n

Stop

max60'

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

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

h-j,u-w Warm Booting

o-r Deicing(TRS )

Time Graph for Overload Deicing

Outdoor Heat

Exchanger

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Outdoor Heat

Exchanger

Basic time

Compressor

abcdefghi j k

Out door fan stop for 60' accumulatively

20’’ 20’’

Max 12’

10’’ 20’’

nopq

Indoor fan Outdoor fan

Operation Indicator

4-way valve

Overload controla-i

i-l Overload deicing(timer)

l-m: Warm booting control

m-r Overload control

Time

Blin k

Oper ati on

Stop

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

8.4. Automatic Mode Operation

Standard for Determining Operation Mode

First Determination:

Setting Temperature (Standard)

25 22

Intake Air

temperature

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

First determination

Indoor fan operates at super low speed for 25 seconds.

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

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

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

includes cooling mode operation.

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.

Room temperature adjustment

Dry

Heating

Higher

23 or above

25 or above

Dry

20 or above

Heating

23 below

20 below

25 below

Standard

Lower

8.5. Air Circulation Mode Operation(Only for PC7DKD,PC9DKD)

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.

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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;

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.

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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

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.

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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.

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

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

Red

Green

OFF

Oriange

Red

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.

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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

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

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

AUTO

FAN SPEED

AIR

SWING

PRESS "OFF/ON" BUTTON

AUTO

HEAT COOL

DRY OFF

STD

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-

nder any operation mode

SSLo

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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

12 ~36

oo o o o

921 29 44 55

9~55

Notes:

In heating mode operation

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.

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.

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Installation

9.1. Before Installation

WARNING

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

shock or fire.

Use the specified cable (1.5mm ) and connect tightly for indoor/outdoor connection.

Power supply connection to a circuit breaker for the permanent connection. Use an approved 10A circuit breaker for the

permanent connection. lt must be a double pole switch with a minimum 3 mm contact gap.

The unit must be earthed, or it will cause fire or electric shock.

Attached accessories.

No . Accessories parts

Installation plate

Installation plate fixing screw

Battery

Remote controller

AUTO

COOL DRY FAN

OFF

MODE

STD DE O

AUTO

FFON

LAY

AUTO

FAN

TEMP

OFF

SPEED

OFF/ON

AIR

CANCEL

SWING

FAN

S PEED

TIMER

SET

AIR

S WING

Qty

Drain elbow

(Only for models: PA7DKD,PA9DKD)

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.

A place where drainage can be easily done.

A place where noise prevention is taken into consideration.

Do not install the unit near the door way.

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

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

OUTDOOR UNIT

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.

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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

5cm

or more

Installation plate

Sleeve ( )

Bushing Sleeve ( )

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 carr y out the drainage test, remove the air filters and pour water into the heat exchanger.

10 cm

or more

100 cm

or more

Saddle ( )

Connecting cable ( )

(3-CORE WIRE/1.5 mm

PC7DKD,PC9DKD

10 cm or more

(5-CORE WIRE/1.5 mm

CORE WIRE/0.50mm

PA7DKD,PA9DKD

Type designation 245 IEC 57 or heavier cord

Additional drain hose ( )

Liquid side piping ( ) 1/4"

Gas side piping ( ) 3/8"

30 cm

or more

Fig 1

This illustration is for explanation purposes only.

The indoor unit will actually face a different way.

9.2. Outline of installation

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Installation works

1. Installation of indoor, outdoor unit

1) Select the best location

2) Indoor unit installation

2. Piping and drainage of indoor unit

1) Prepare of piping

2) Connection of piping

For the right piping

For the left piping

3. In case of Embedded Piping

For the embedded piping

Installation parts Required tools

Installation plate

4 wooden screws

4 anchor bolts

Pipes: Gas side 3/8’’

Liquid side 1/4’’

Insulated drain hose

Insulation materials

Pipes:Gas side 3/8 ”

Liquid side 1/4”

Insulated drain hose

Insulation materials

A level gauge Philips screw driver Electric drill hole-core drill( 70mm) Side cutter or electrical pliers

Flaring tools set

Specified torque wrenches

18N.m

42N.m

Spanner

Flaring tools set

Specified torque wrenches

18N.m

42N.m

Spanner

Liquid side piping

Gas side piping

Half union

Liquid side piping

Gas side piping

Half union

4. Connecting piping and cable to the outdoor unit

1) Connecting the piping to

the outdoor unit

2) Connecting the cable

5.Checking the drainage and connecting

the cable to inddor unit

1) Checking the drainage

2)Connect the cable to the indoor unit

6. Test Running

1) Connect the power supply

2) Evaluation of the performance

Additional drain hose

(Outer diameter 1.5mm)

Connecting cable

(3-core wire/1.5mm2)

Locally approved cable

Connecting cable

(3-core wire/1.5mm2)

Locally approved cable

Specified torque wrenches

18N.m

42N.m

A glass of water

Phillips screw driver

Circuit breaker or time delay

fuse(consult an electrician)

Operating instructions

Thermometer

Liquid side

Gas side

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

9.3. Outline of installation

9.3.1. Select the best location

1. Indoor unit

There should not be any heat source of steam near the

unit.

There should not be any obstacles to prevent the air

circulation.

A place where air circulation will be good.

A place where drainage can be easily obtained.

A place where noise prevention is taken into

consideration.

Do not install the unit near the doorway.

Ensure the spaces indicated by arrows from the wall,

ceiling, fence, or other obstacles.(Fig 2)

Recommended installation height for indoor unit shall be

at least 2.5m.

10cm

100cm

10cm

Fig.3

5cm

Height more than

2.5m

Fig.2

2. Outdoor unit

If an awning is built over the unit to prevent direct

sunlight or rain exposure, be careful that heat radiation

from the condenser is not restricted.

There should not any animals or plants which

could be affected by hot air discharged.

Ensure the spaces indicated by arrows from the wall,

ceiling, fence, or other obstacles.(Fig 3)

5cm

3. Piping length and elevation

Model

PA7DKD/PC7DKD

PA9DKD/PC9DKD

Piping size

Gas

3/8’’ 1/4’’

Fig.4

Liquid

Max piping length(m)

Max piping elevation(m)

9.3.2. Indoor unit Installation

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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

1. Mount the installation plate on the wall with four installation plate fixing screws.

(If mounting the unit on the concrete wall,consider

using anchor bolts.)

Always mount the installation plate horizontally by

aligning the mark-off line with the thread and use a level gauge.

Screw

105mm

Thread

Weight

Installation

plate

145mm

The lower left and right side of installation plate

Left rear piping

Center

70mm

7 0mm 7 0mm

Right rear piping

Center

70mm

Wall

Indoor

Outdoor

5-7mm

Fig.6

Fig.5

2. Drill the piping hole with 70mm hole-core drill.

•

Line according to the arrows marked on the lower left and

right side of the installation plate.

To drill a hole in the wall and install a sleeve for tube ass’y

•

Drill a 70mm hole sloping downward toward the outside of

the wall.

•

Insert the sleeve for tube ass’y through the hole.

•

Fix the bushing to the sleeve.

•

Extrude 15mm of the sleeve then cut

Caution

When the wall is horrow please be sure to use the sleeve

for tube ass’y to prevent dangers caused by mice biting

the connecting cable.

Indoor

70mm

Outdoor

15mm

5-7mm

Fig.7

•

Finish by sealing the sleeve with putty or caulking

compound at the final stage.

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

9.4. Piping and Drainage of Indoor Unit

9.4.1. Preparation of piping

1. Cut the pipes and the cable

Use the accessory piping kit or pipes purchased locally

Measure the distance between the indoor and the

outdoor unit.

Cut the pipes a little longer than the measured distance.

Cut the cable a little longer than the pipe length.

Pipe size

Model

PA7DKD/PC7DKD

PA9DKD/PC9DKD

Pipe cutter

Gas side Liquid side

3/8”

Slanted

1/4”

Rough

3. Flaring the pipe

Insert the flare nuts, mounted on the connection ports

of both indoor and outdoor unit, onto the copper pipes.

Fit the copper pipe end into the bar of flare tool about

0.5-1.5mm higher.(See Fig.10)

Flare the pipe ends.

Bar

Handle

Yoke

Cone

Copper pipe

Clamp handle

Fig.10

Fig.8

2. Remove burrs Remove burrs from cut edges of pipes. Turn the pipe end down to avoid the metal powder

entering the pipe.

Pipe

Reamer

Point down

4. Tape the flaring portion to protect it from dust or damage.

Improper flaring

Slanted

Surface Damaged

Cracket

Uneven Thickness

When properly flared,the internal surface of the flare will evenly shine and be of even thickness. Since the flare part come into contact with the connectors, carefully check the flare finish.

Fig.11

Fig.9

Caution

If burrs are not removed, they may cause a gas leakage.

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

9.4.2.

Remove the indoor piping

For the right piping

1. Pull the tube out of chassis.

2. Insert the tube and drain hose into the hole.

Connection of piping

Pull the tube out of chassis.

Fig.12

Indoor/Outdoor Connecting cable

Gas side piping

Liquid side piping

Connecting cable

Fig.14

5. Indoor unit installation

Hook the indoor unit onto the upper portion of

installation plate. (Engage the two hooks of the rear

top of the indoor unit with the upper edge of the

installation plate.)

Ensure the hooks are properly seated on the installation

plate by moving it left and right.

Drain hose

3. Insert the connecting cable into the indoor unit through the hole.

Do not connect the unit to power supply. Make a small loop with the cable for easy connection later.

4. Tape the tube,drain hose and cable.

Indoor/Outdoor Connecting cable

Fig.13

Drain hose

Connecting cable

Press the lower left and right side of the unit against the installation plate until the hooks engages with their slots (sound clicks)

Fig.15

6. Connecting the piping to the indoor unit

• Align the center of the piping and sufficiently tighten the

flare nut with fingers.

• Finally, tighten the flare nut with torque wrench until the

wrench clicks.

When tightening the flare nut with torque wrench,

ensure the direction for tightening follows arrow on the

wrench.

Model Piping side Torque

PA7DKD

Liquid side 1 4"

18N.m

PA9DKD PC7DKD PC9DKD

Gas side 3/8”

42N.m

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Outdoor

Indoor unit piping

Flare Nut

Pipings

Spanner or wrench

Fig.16

For the left piping

1. Route the indoor tubing with the drain hose to the hole.

Pull out the drain hose. Exchange the hose and cap.

Torque wrench

Piping

Indoor

3. Insert the connecting cable into the indoor unit

• Do not connect the cable to the indoor unit.

• Make a small loop with the cable for easy connection.

Connecting cable

Fig.18

Cap

2. Insert the piping and connecting cable to indoor side

through the hole.

Drain hose

Fig.17

Connecting cable

Fig.19

Gas side piping

Liquid side piping

4. Indoor unit installation

• Hook the indoor unit onto the upper portion of installation plate. (Engage the two hooks of the rear top of the indoor unit with the upper edge of the installation plate.)

• Ensure the hooks are properly seated on the installation plate by moving it left and right.

Hook at installation plate

Sleeve for piping hole

Drain hose

Piping

Fig.21

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Fig.23

7. Tape the piping, drain hose and connecting cable.

5. Connecting the piping to the indoor unit

• Align the center of the piping and sufficiently tighten the

flare nut with fingers.

• Finally, tighten the flare nut with torque wrench until the

wrench clicks.

When tightening the flare nut with torque wrench,

ensure the direction for tightening follows arrow on the

wrench.

Model Piping side Torque

PA7DKD PA9DKD PC7DKD PC9DKD

Indoor unit piping

Liquid side 14"



Gas side 3/8”

Flare Nut

18N.m

42N.m

Pipings

Tape

Piping

Drain hose

Fig.24

Spanner or wrench

Fig.22

6. Set the piping and the connecting cable to the back of

chassis with the clamping cover.

Torque wrench

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

9.5. In case of embedded Piping

For the embedded piping

Follow the same procedure for left rear and left piping.

9.5.1. Replace the drain hose

9.5.6. Connecting the piping

• Refer to the section "connecting the piping" in the directions

for the indoor unit.

(Connecting the piping to the outdoor unit and checking the

gas leakage.)

Replace the drain hose and drain cap. Figure from the back of the indoor unit after

installation. (For the left and left rear piping)

Drain cap

Drain hose

Fig.25

9.5.2. Bend the embedded piping

• Use a spring bender or equivalent to bend the piping so

that the piping is not crushed.

In case of the embedded piping. How to pull the piping and drain hose out.

Sealed with putty or caulking compound

More than 95cm

PVC tube for drain hose

More than 70cm

PVC tube for drain hose

PVC tube for drain hose (Be sure to insulate the PVC tube for drain hose)

More than 30cm

PVC tube for drain hose

Connecting

cable

Piping

Fig.27

Connecting cable

Indoor unit

Drain hose from main unit

Piping

5.5cm

9.5.7. Connecting the cable to the indoor

unit

• The cable can be connected without removing the front

grille.

Connecting

cable

Drain

hose

Slightly pull down the drain hoseSlightly pull down the drain hose

Fig.26

9.5.3. Install the indoor unit.

9.5.4. Cut and flaring the embedded

piping

• When determining the dimensions of the piping, slide the

unit all the way to the left on the installation plate.

• Refer to the section “cut and flaring the piping” in the

directions for the outdoor unit. (Refer page 40)

9.5.5. Pull the connecting cable into the

indoor unit.

Insert the piping

through the sleeve

Drain hose

Piping

About 95cm or a bove

Fig.28

Connecting cable

9.5.8. Install the indoor unit fixly. [REFERENCE Fig.28, Fig.29]

For left side piping,how to insert the connecting cable and drain hose

Drain hose

Piping

Connecting cable

(Same as the directions for right

side piping)

Fig.29

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

9.6. Connecting piping and the cable to outdoor unit

9.6.1. Connecting the piping to outdoor unit

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

2. Finally tighten the flare nut with torque wrench until the wrench clicks.

When tightening the flare nut with torque wrench, ensure the direction for tightening follows the arrow of the wrench.

Piping side Torque

Liquid side 1/ 4"

Gas side 3/8”

18N.m

42N.m

Caution

When connecting the piping, always use a torque wrench. Other tools may cause damage to the flare nut because of improper force.

3. Ensure not to let the piping exposed to air.

9.6.2. Connecting the cable to the outdoor unit

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

2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 3 (PC7DKD,

PC9DKD) or 5 (PA7DKD, PA9DKD)x 1.5 mm flexible cord, type designation 245 IEC 57 or heavier cord.

For PA7DKD, PA9DKD the attached wire 6 with two connectors should be applied.

CS/CU-PC7DKD,CS/CU-PC9DKD

Indoor Connecting Terminal

Colours of wires

Outdoor Connecting Terminal

CS/CU-PA7DKD,CS/CU-PA9DKD

Indoor Connecting Terminal

Colours of wires

Outdoor Connecting Terminal

1(L) 2(N)

Connector

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

4. Attach the control board cover to the original position with the screws.

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

9.7. Checking the drainage and connecting the cable to indoor unit

9.7.1. Checking the drainage

1. Remove the front grille from the cabinet

When removing the front grille for maintenance purposes

etc, carry out by the following procedures.

a. Set the vertical airflow direction louver to the

horizontal position.

b. Remove the two caps on the front grille as shown in the

illustration at right, and then remove the two mounting

screws.

c. Pull the lower section of the front grille toward you to

remove the front grille.

When reinstalling the front grille, first set the vertical airflow

direction louver to the horizontal position, and then carry out

by steps” c” and “b” in that order. At this time check to sure

that the fixing tabs on the top inside edge of the front grille

are securely inserted into the respective slots.

Traystyrofoam

Air filter

Horizontal airflow direction louver

Cap

Front Grille

Manually adjust the horizontal airflow direction louver to horizontal position

Fig.30

2. Checking the drainage

• Pour a glass of water into the drain train traystyroform.

• Ensure water flow out from drain hose of indoor unit.

Pull the lower section of the front grille toward you to remove

the front grille.

Fig.31

3. Drainage control for outdoor unit (For heating pump models only)

If a drainage plug is applied,the outdoor unit

should at least be 3 centimeters high from the

floor.

If is better not to use the drainage plug if the

temperature is lower than 0 ,since icing of the

condensed water may block the water flow.

Drain plug

9.7.2. Connect the cable to the indoor unit

The inside and outside connecting cable can be

connected without removing the front grille.

Connecting cable between indoor unit and outdoor unit

shall be approved polychloroprene sheathed 3

(PC7DKD,PC9DKD, ) or 5(PA7DKD,PA9DKD)x1.5mm

flexible cord, type designation 245 IEC 57 or heavier

cord. For PA7DKD,PA9DKD, the attached wire 6 with

two connectors should be applied.

• Ensure the colour of wires of outdoor unit and the terminal

number are the same as the indoor’s respectively.

• Secure the cable onto the board with the holder (clamper).

• Both the unit and the power supply socket should be

properly grounded.

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

HOW TO TAKE OUT THE FRONT GRILLE

Please follow the steps below to take out front grille

If necessary such as when servicing.

Set the vertical airflow direction louver to the horizontal position.

Slide down the two caps on the front grille as shown in the illustration below, and then remove the two mounting screw. 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 louver to the horizontal position and

the carry out above steps 2-3 in the reverse order.

Vertical airflow deflection louver

Screw

CS/CU-PC7DKD,CS/CU-PC9DKD

Indoor Connecting Terminal

1(L) 2(N)

Colours of wires

Outdoor Connecting Terminal

1(L) 2(N)

CS/CU-PA7DKD,CS/CU-PA9DKD

Indoor Connecting Terminal

1(L) 2(N)

Colours of wires

Outdoor Connecting Terminal

1(L) 2(N)

Connector

• Secure the cable onto the control board with the holder

(clamper).

1(L) 2(N) 3 4

Plug

(Move the vertical vane to horizontal)

Cap

AUTO SWITCH OPERATION

The below operation will be performed by pressing the “Auto” switch.

AUTO OPERATION MODE

The Auto operation will be activated immediately

once the Auto Switch is pressed.

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.

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.

CS-PC7DKD CS-PC9DKD

CS-PA7DKD CS-PA9DKD

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

9.8. Test Running

9.8.1. Connect the power supply

1. Connect the power supply cord to independent power

supply.

• Circuit breaker is necessary.

2. Prepare the remote control

• Insert two batteries

• Remove the cover from the back of the remote control.

Insert two batteries

• Be sure that the (+) and (-) directions are correct.

• Be sure that both batteries are new.

• Re-attach the cover.

• Slide the cover back into position.

3. Operate the unit at cooling mode operation for 15 minutes

or more.

9.8.2. Evaluation of the performance

1. Operate the air conditioner for 15 minutes.

2. Measure the temperature of the intake and discharge air.

3. Ensure the difference of temperature between the intake

and discharge air is more than 8°C in cooling operation,

or more than 14°C in heating operation.

Intake air

Discharge air

Thermometer

OPEN

CAUTION

Connecting cable between the indoor and outdoor unit shall be

approved cable and the size of the conductor shall be 1.5mm2.

10 2-way,3-way Valve

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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)`

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

(

gauge)

(With vacuum pump)

With charging cylinder)

Open

gauge)

Open

(Connected manifold

gauge)

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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

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.

10.2. Pumping down

(For Re-Installation)

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

(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

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

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.

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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

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.

Connect the centre hose of the charging set to a

vacuum pump.

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.

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 ).

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.

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

(Gas leakage)

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Vacuum pump

(Indoor unit)

Open

Low

(Liquid side)

(Gas side)

High

Closed

2-way valve

3-way valve

(Outdoor unit)

Open

Procedure

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

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

kg/cm G (0.1MPa).

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

reclaiming equipment.

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).

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

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

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

refrigerant until the needle indicates 0 (no refrigerant

is remaining).

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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

Procedure

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

Evacuation for approximately 1 hour.

Confirm that the gauge needle has moved toward -76cmHg

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

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).

Disconnect the charge hose from the vacuum.

Vacuum oil

If the vacuum pump oil becomes dirty or depleted, replenish

as needed.

10.6. Gas charging

(After Evacuation)

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Charging cylinder

(Indoor unit)

Open

Low

(Liquid side)

(Gas side)

High

Closed

2-way valve

3-way valve

(Outdoor unit)

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.

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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

Removal Procedure For Electronic Controller

1 Release tabs of the control box cover and detach the control box cover .

Release the fixing screws of the control box. (Fig. 6)

2. Release the lead wire CN-FM, CN-FB, CN-AIR, CN-STM,CN-RCV ,

CN-DISP and earth wire(Yellow/Green). Pull out the whole electronic

controller.

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Fig 6

Removal Procedure For the Discharge Grille

1. Separate the drain hose and the drain plate(Fig. 8)

2. Pull out the discharge grille slightly (Fig. 9)

Fig 7

Fig 8

Fig. 9

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Removal Procedure For Cross Flow Fan

1. Release the two fixing screws on the left side of the evaporator

and lift up the evaporator slightly. (Fig. 10)

2.Loose the fixing screw of the cross flow fan. (Fig. 11)

Fig. 10

3.After removing the bearing (refer to fig12) , indoor fan can be

taken out from the left side.

4. Lift up the indoor fan slightly, and then pull the fan motor out. Fig13

Fixing Screw

Fig. 11

Bearing

Fig 12

Fan motor

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.

Fig 13

Resetting terminals

Fig 14

12 Troubleshooting Guide

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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)

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

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

Insufficient refrigerant

clogged strainer or capillary tube

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

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.

13 Technical Data

Thermostat characteristics

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Cooling mode

()

Intake Air temperature

16 18 20 22 24 26 28 30

Temperature setting

Compressor on

Compressor off= Set temperature

1.5 in difference

()

Soft dry mode

()

Intake Air temperature

16 18 20 22 24 26 28 30

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)

()

Intake Air temperature

16 18

20 22 24

26 28

Temperature setting

Compressor off= Set temperature

Compressor on

Set temperature(diff. 0.5 )

2.0 in difference

()

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Cooling characteristics

CS/CU-PA7DKD

2.6

2.4

2.2

2.0

1.8

Q: Cooling capacity (kW)

6.0

5.0

4.0

3.0

I: Current (A)

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

CS/CU-PC7DKD

220V

17 16 15 14 13

2.6

O:Outlet air temp( )

2.4

2.2

2.0

1.8

0.70

Q: Cooling capacity (kW)

0.65

0.60

0.55

0.50

pressure (Mpa)

GP: Gas side piping

6.0

5.0

4.0

3.0

I: Current (A)

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

220V

17 16 15 14 13

O:Outlet air temp( )

0.70

0.65

0.60

0.55

0.50

pressure (Mpa)

GP: Gas side piping

CS/CU-PA9DKD

2.8

2.6

2.4

2.2

2.0

Q: Cooling capacity (kW)

6.0

5.0

4.0

3.0

I: Current (A)

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

CS/CU-PC9DKD

220V 230V

17 16 15 14 13

2.8

O:Outlet air temp( )

2.6

2.4

2.2

2.0

0.70

Q: Cooling capacity (kW)

0.65

0.60

0.55

0.50

pressure (Mpa)

HP: Gas side piping

6.0

5.0

4.0

3.0

I: Current (A)

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)

HP: Gas side piping

Heating characteristics

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

CS/CU-PA7DKD

2.4

2.3

2.2

2.1

Q: Heating capacity (kW)

4.0

3.0

2.0

1.0

I: current (A)

789

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

Piping length:5m

CS/CU-PA9DKD

220V

3.1

O:Outlet Air temp( )

Pressure (Mpa)

HP:Gas side piping

11 1 2

3.0

2.9

2.8

Q: Heating capacity (kW)

I: current (A)

3.9

3.8

3.7

3.6

789

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

Piping length:5m

220V 230V

O:Outlet Air temp( )

Pressure (Mpa)

HP:Gas side piping

11 1 2

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

14 Exploded View

CS-PA7DKD/CS-PC7DKD CS-PA9DKD/CS-PC9DKD

STD

MODE TEMP

OFF

CANCEL SET

FANSPEED

OFF/ON

TIMER

AIRSWING

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

15 Replacement Parts List

CS-PA7DKD/CS-PC7DKD CS-PA9DKD/CS-PC9DKD

No. DESCRIPTION&NAME Q'ty CS-PA7DKD CS-PC7DKD CS-PA9DKD CS-PC9DKD RE

1 CHASSIS COM PLETE 1 CWD50C1348 CWD50C1348 CWD50C1348 CWD50C1348

2 FAN M OT OR 1 CWA921308 CWA921308 CWA921329 CWA 921329

3 CROSS FLOW FAN C OM PLE TE 1 CWH02C1030 CWH02C1030 CWH02C1030 CWH02C1030

4 EVAPORATOR 1 CWB30C1629 CWB30C1447 CWB30C1629 CWB30C1631

5 INTAKE AIR SENSOR HOLD ER 1 CWH711013 CWH711013 CWH711013 CWH711013

6 DISCHARG E GRILLE C OM PLE TE 1 CWE20C2361 CWE20C2361 CWE20C2362 CWE20C2361

7 AIR SWING M O TOR 1 CWA981158 CWA 981158 CWA 981158 CWA981158

9 DAIN ELBO W 1 CWH52160C CWH52160C CWH52160C CWH 52160C

10 VERTICAL VANE

11 VERTICAL VANE

12 HORIZON TAL VANE 1 CWE241137 CWE241137 CWE241144 C WE241137

13 C-BOX 1 CWH14C4458 CWH14C4460 CWH14C4459 CWH14C4461

14 CONTR OL BOAR D 1 CWH102261J C WH102211J CWH 102261J CWH102211J

15 POWER SUPPLY COR D COM PLET E 1 CWA20C2418 CWA20C 2362 CWA20C2418 CWA20C2362

16 PARTICULAR PIECE 1 CWD932090C CWD932090C CWD932090C CWD932090C

17 MAIN PCB 1 CWA743760 CWA 743752 CWA743761 CWA743754

18 RECEIVER COM PLE TE 1 CWA743353 CWA743353 CWA 743353 CWA743353

19 CONNE CTING LEAD (S-RECEIVER ) 1 CWA67C5171 CWA67C 5490 CWA67C5171 CWA67C5490

20 INDICAT OR COM PLE TE 1 CWE39C1117 CWE39C1117 CWE39C1117 CWE39C1117

21 INDICAT OR HOLD ER 1 CWD932447 CWD932447 CWD932447 CWD932447

22 INDICAT OR PCB 1 CWA743603 CWA743603 CWA743603 C WA743603

23 CONNE CTING LEAD ( INDICAT OR ) 1 CWA67C5169 CWA67C5169 CWA67C5169 CWA67C5169

24 SENSOR COM P LETE 1 CWA50C2275 CWA50C2275 CWA50C2275 CWA50C2275

25 CONTR OL BOAR D FRONT COV ER 1 CWH131190 CWH131175 CWH 131190 CWH131175

26 CONTR OL BOAR D TOP COVER 1 CWH131189 CWH131176 CWH131189 CWH131176

RIGHT 1 CWE24C1058 CWE24C1058 CWE24C1058 CWE24C1058

LEFT 1 CWE24C1059 CWE24C1059 CWE24C1059 CWE24C1059

27 REMO TE CONT RO L 1 CWA75C2712 CWA75C2710 CWA75C2712 CWA75C2710

28 FRONT GRILLE COMP LETE 1 CWE11C3153 CWE11C3153 CWE11C3153 CWE11C3153

29 FRONT GRILLE 1 CWE22K1233 CWE22K1233 CWE22K1233 CWE22K1233

30 AIR FILTER 2 CWD001110 CWD001110 CWD 001110 CWD001110

31 SCREW-FRO NT GRILLE 2 XTT4+14C XTT 4+14C XTT 4+14C XT T4+14C

32 CAP-FRON T GRILLE 2 CWH521025F CWH521025F CWH521025F CWH521025F

33 DRAIN HOSE 1 CWH851095 CWH851095 CWH 851095 CWH851095

34 INSTRUCTIONS COM PLETE 1 CWF56C4533 CWF56C4533 CWF56C4533 CWF56C4533

35 OPERAT ING INSTRUT IONS 1 CWF564523 CWF564523 CWF564523 CWF564523

36 INSTALLATION INSTRUCTIONS 1 CWF612699 CWF612699 CWF612699 CWF612699

37 INSTALLA TION PLATE 1 CWH36K1019 CWH36K1019 CWH36K1019 CWH36K1019

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

16 Exploded View

CU-PA7DKD/CU-PC7DKD CU-PA9DKD/CU-PC9DKD

17 Replacement Parts List

CU-PA7DKD/CU-PC7DKD CU-PA9DKD/CU-PC9DKD

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

No. DESCRIPTION&NAME Q'ty CU-PA7DKD CU-PC7DKD CU-PA9DKD CU-PC9DKD

1 BASE ASS'Y 1 CWD52K1108A CWD52K1106A CWD52K1108A CW D52K1106A

2 HOLDER-FAN MOTOR 1 CWD541076 CWD541072 CWD541077 CWD541072

3 SCREW-F.M. HOLDER 2 XTT4D10CFJ XTT4D10CFJ XTT4D10CFJ XTT4D10CFJ

4 FAN MOTOR 1 CWA951419 CWA951427 CWA951419 CWA951427

5 FIXING SCREW-FAN MOTOR 3 CWH55406J CWH55406J CW H55406J CWH55406J

6 PROPELLER FAN 1 CW H03K1025 CWH03K1025 CWH03K1025 CWH03K1025

7 NUT-P.FAN 1 CWH561036J CWH561036J CWH561036J CWH561036J

8 COMPRESSOR 1 CWB092128 CWB092129 CWB092312 CWB092279

9 MOUNT RUBBER(COMP.) 3 CWH501022 CWH501022 CWH501022 CWH501022

10 NUT-COMP.MOUNT 3 CWH561047A CWH561047A CWH561047A CWH561047A

11 CONDENSER 1 CWB32C1606 CW B32C1483 CW B32C1607 CWB32C1484

12 TUBE ASS'Y(RECEIVER) 1 CWT01C3163 CWT023555 CWT01C3165 CWT023556

13 HOLDER-COUPLING 1 CW H351049A CWH351049A CW H351049A CWH351049A

14 4-WAY VALVE 1 CWB001045

15 2-WAY VALVE 1 CWB021247 CW B021247 CWB021247 CWB021247

16 3-WAY VALVE 1 CWB011301 CW B011301 CWB011301 CWB011301

17 STRAINER 1 CWB111026 CWB111026 CWB111026 CWB111026

18 OVER LOAD PROTECTOR 1 CWA121201 CWA12146+C CWA121226 CWA121199

19 TERMINAL COVER 1 CWH17006 CWH17006 CWH17006 CWH17006

20 NUT-TERMINAL COVER 1 7080300 7080300 7080300 7080300

21 SOUND PROOF PANEL 1 CWH151080 CW H151080 CW H151080 CW H151080

23 TERMINAL BOARD ASS'Y 1 CWA28K1104 CW A28K1105 CWA28K1104 CWA28K1105

24 CAPACITOR-COMPRESSOR 1 F0GAG2060001 DS401206CPXB F0GAG3060001 F0GAG2560001

25 HOLDER-CAPACITOR 1 CWH301037 CWH301037 CWH301037 CWH301037

26 CAPACITOR-FAN MOTOR 1 F0DAH2050001 F0DAH2050001 F0DAH2050001 F0DAH2050001

27 TUBE ASS'Y(CAPILLARY) 1 CW T01C3300 CWT01C3303 CWT01C3302 CWT01C3304

CAPILLARY 1 CWB15373 CW B15303 CWB15195 CWB15259

28 SENSOR 1 CW A50C2276

29 V-COIL COMPLETE 1 CWA43C2175

30 SURFACE COVER 1 CWE031044A CWE031044A CWE031044A CWE031044A

31 CABINET FRONT PLATE 1 CWE06K1049 CWE06K1049 CWE06K1049 CWE06K1049

32 CABINET SIDE PLATE(R) 1 CW E041125A CWE041125A CWE041125A CWE041125A

33 CABINET SIDE PLATE(L) 1 CWE041124A CWE041124A CWE041124A CWE041124A

34 CONTROL BOARD COVER 1 CWH131223 CWH131223 CWH131223 CWH131223

CWB001045

CWA50C2276

CWA43C2175

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

STP Motor

Outdoor Fan Drive Signal

Indoor Fan Drive Signal

Indicator

Power Air Quality

Indicator

Timer

Comp

4-Way Valve

AUTO

Indoor Fan Motor Feedback

Receiver

Reset

Air Quality Sensor

Earth

TempSensor

8910

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Terminal Board

Blue

Yellow

Blue

Yellow

Capacitor

O.L.P.

Outdoor

Unit

Blue

Red

Fan Motor

Red

Capacitor

Blue

Yellow

Compressor

Yellow/Green

For PA7DKD, the power source is 220V. For PA9DKD, the power source is 220V-230V .

1411 12

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

P47

P46

P45

P44

P43

P42

P41

P40

P67

P66

P65

P23

Indoor Fa

P24

P25

Earth

VDD1

AN17

AN16

STP Motor

P50 P51 P52 P53 P54 P55 P56 P57 VSSO VDDO P30 P31 P32

P33 P34 P35

Outdoor Fan Drive Signal

Indoor Fan Drive Signal

Indicator

Power Air Quality

Indicator

Timer

SI30

SO30

SCK30

AN16

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

P64

T001

P74

T051

omp

-Way Valve

AUTO

Receiver

Motor Feedback

Reset

Air Quality Sensor

TempSensor

AN15

AN14

AN13

AN12

P72

IC(VPP)

AN11

8910

AC220V-230V

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

TerminalBoard

For PA7DKD, the power source is 220V. For PA9DKD, the power source is 220V-230V .

1411 12

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD

Panasonic CS-PA7DKD, CS-PC7DKD, CS-PA9DKD, CS-PC9DKD, CU-PA7DKD Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual