Panasonic CSCU-PE9DKD, CSCU-PE12DKD Service Manual

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Page 1

Order No.

GMAC0506049C3

Air Conditioner

CS/CU-PE9DKD CS/CU-PE12DKD

LAY

AUTO

HEAT

LAY E

OFF

COOL

DRY

OFF

NCE

SET/C

LECT

E RRES O

TER

INVER

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 14

8 Operation Details 15

Installation instructions

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10 Installation and Serving Air Conditioner Using R410A

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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Page 2

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

1 Features

High Efficiency

Air Quality Indicator

Auto Restart Control

Automatically restart after power failure

12-hour Timer Setting

Delay ON Timer and OFF Timer

Enviromental Friendly (For Refrigerant : R410A Model)

Zero ozone depleting potential and low global

warming potential by using R410A refrigerant.

Comfort Environment

Air filter with function to reduce dust and smoke

Removable and washable Front Panel

Breakdown Self Diagnosis function

Page 3

2 Functions

Remote Control

AUTO HEAT COOL

DRY

OFF

hr DELAYhrDELAY

OFF ON

ON OFF

SELECT

ERRORRESET

INVERTER

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

SET/CANCEL

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

Cooling Mode Operation

Soft Dry Mode Operation

Mode

Indoor Fan Speed Selection

Low Speed

Med- 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

A,B

Med Speed

Med+ Speed

High Speed

Automatic Speed

Time Changing Button

Change the setting time.

Set timer/Cancel the set timer

By pressing SET button for 5seconds

continuously to switch to set the sensor

sensitivity.

CHECK

Check Point

Self diagnosis function

ERROE RESET

ERROE Reset Point

To reset the indoor unit.

RESET

Reset Point

Clear memory data

Page 4

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

Indoor Unit

Auto Switch

Button

Power Switch ON/OFF

When the remote control cannot be used or

for repairing and testing ,please use this

button.

Anti-freezing Control for the Evaporator

Cooling or Soft Dry Operation

Force Cooling Operation

Keep pressing this button for 5 seconds to start

the force cooling operation.

Force Heating Operation

Keep pressing this button for 8 seconds to start

the force heating operation.

Different Remote Controlling Setting

Keep pressing this button for11 to change

different remote controlling setting(A B)

Mode.

Signal Receiving Sound

Keep pressing this button for 16 seconds to turn

off or turn on the signal receiving sound

H14 Abnormality Detection Mode.

Operation Indication Lamps

Power (green)

Timer(orange)

Air quality

Green

Orange

Red

Lights up in operation;

Blinks during Hot Start

operation and

determining Auto

Operation mode

Light up in Timer Setting.

Blinks in Self Diagnosis Control

Operation Mode

Cooling/Heating/Soft Dry /Auto Operation

Time Delay Safety Control

The unit will restart operation in 3-4

minutes after each pause.

Warm Booting Control

Indoor fan starts running when indoor

piping reaches 19 or above.temperature

Indoor Fan Speed Control

High,Med+, Med, Med-,Low

Auto Fan Speed

Airflow Direction Control

Automatic Airflow Direction Control

The louver automatically swings up and down

Five Manual Airflow Direction 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.

Automatic Restart Control

Operation is restarted after power failure

at previous setting mode.

Page 5

Outdoor Unit

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

Panasonic

4-way Valve Control

If the unit is stopped during Heating

Operation, the 4-way valve will remain in

heating mode operation for 3 minutes.

Overload Protector

Inner protector

30 Seconds Forced Operation Control

Once the compressor is activated, it does not

stop within 30 seconds. It stops immediately with

remote control ON/OFF button.

Total Running Current Control

Deice Operation

Page 6

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

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-PE9DKD CU-PE9DKD

2.50(0.90-3.00)

3.30(0.90-4.00)

Single

230

SIDE VIEW

TOP VIEW

7.7

9.8

Cooling:high42,Low27 Heating:high42,Low27

22.5

Cooling:high46 Heating:high47

Cooling:730(190-1000) Heating:820(170-1110)

Cooling:3.4 Heating:3.7

Cooling:2.95(2.58-4.05) Heating:3.46(3.10-4.53)

3.7

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"

0.65

3 core-wire/1.5mm

1.9

280 799 183

540 780 289

Cross-flow fan

Induction(8poles)

Rotary(1 cylinder) Rolling piston type

Induction(6 poles)

650

Propeller fan

Induction(6 poles)

840 60 1080 60 1370 60

670 60

Page 7

Heat Exchanger

Description Tube Material Fin Type

Rows/Stage

FPI

Dimensions

Refrigerant Control Device Refrigeration Oil

Refrigerant (R410A) Thermostat Protection Device

Length

Capillary

Circulation Inner Diameter

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

Unit CS-PE9DKD CU-PE9DKD

Evaporator

Copper

Slot type

Condenser

Copper

Corrugation type

(Plate fin configuration,forced draft)

(c.c)

mm L/min mm

2x15

610x252x25.4

Electronic Control

726x504x18.2

RB68A or Freol Alpha68M

1X24

18.5

Capillary Tube

840

sensor

Inner protector

600 10

8.15 0.2

1.3

Air Filter

P.P. Honeycomb

Refrigerant Circulation Control Device

Fan Motor Capacitor

F,V

Specifications are subject to change without notice for further improvement.

Capillary

F,1.2 450V

Page 8

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

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-PE12DKD CU-PE12DKD

3.15(0.90-3.80)

4.10(0.90-5.00)

Single

230

SIDE VIEW

6.8

8.4

9.9

Cooling:high42,Low30 Heating:high42,Low33

TOP VIEW

27.4

Cooling:high48 Heating:high50

Cooling:900(190-1270) Heating:1110(170-1410)

Cooling:4.2 Heating:4.9

Cooling:2.98(2.57-4.05) Heating:3.18(3.07-4.53)

4.9

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

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

0.65

1.9

3 core-wire/1.5mm

280 799 183

Cross-flow fan

Induction(8poles)

950 60 1170 60 1380 60

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

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

540 780 289

Rotary(1 cylinder) Rolling piston type

Induction(6 poles)

650

Propeller fan

Induction(6 poles)

770 60

Page 9

Heat Exchanger

Description Tube Material Fin Type

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

Unit CS-PE12DKD CU-PE12DKD

Evaporator

Copper

Slot type

Condenser

Copper

Corrugation type

Rows/Stage

(Plate fin configuration,forced draft)

2x15

FPI

Dimensions

Refrigerant Control Device Refrigeration Oil

Refrigerant (R410A) 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

Fan Motor Capacitor

F,V

Specifications are subject to change without notice for further improvement.

2X24

726

X504x18.2

696

Capillary Tube

RB68A or Freol Alpha68M

1020

Inner protector

300 10

11.3 0.2

1.3

565 20

12.3 0.2

1.5

Capillary

F,1.8 450V

Page 10

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

4 Dimensions

Indoor Unit

CS-PE9DKD CS-PE12DKD

Unit:mm

Side view

Left Piping Hole

Air intake

Air outlet

Front View

280

(100)

Installation Plate Hook

(420)

Gas Side

(50)

Liquid Side

183

Right Piping Hole

AUTO

HEAT

COOL

DRY

DELAYhrDELAY

OFF ON

ON OFF

OFF

141

SET/CANCEL

SELECT

ERRORRESET

INVERTER

17.1

Drain Port

Installation plate (Front View)

254

(131)

B A

(382) (118)

(631)

Page 11

Outdoor Unit

CU-PE9DKD

CU-PE12DKD

10cm or more

100cm

or more

105

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

Unit : mm

780

570

18.6

289

INVERTER

Page 12

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

5 Refrigeration Cycle Diagram

CS/CU-PE9DKD CS/CU-PE12DKD

INDOOR UNIT

INTAKEAIR SENSOR

HEAT EXCHANGER (EVAPORATOR)

PIPING SENSOR

LIQUID SIDE

2-WAY VALV E

OUTDOOR UNIT

CAPILLARY TUBE C3

CAPILLARY TUBE C1

CAPILLARY TUBE C2

OUTDOOR AIR

SENSOR

HEAT EXCHANGER (CONDENSOR)

PIPING SENSOR

Cooling Heating

GAS SIDE

3- WAY VA LVE

COMPRESSOR SENSOR

4- WAY VA LVE

COMPRESSOR

Page 13

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

6 Block Diagram

4-WAY VALVE

REACTANCE

OUTDOOR UNIT

INDOOR UNIT

CS-PE9DKD/CU-PE9DKD

CS-PE12DKD/CU-PE12DKD

230

50HZ

THERMAL

FUSE

Page 14

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

7 Wiring Diagram

CS-PE9DKD/CU-PE9DKD CS-PE12DKD/CU-PE12DKD

WIRELESS REMOTE CONTROL

POWER SUPPLY CORD

AC230V,50Hz

OUTDOOR UNIT

TERMINAL

ELECTRONIC

CONTROLLER

(DISPLAY,RECEIVER)

CN-DISP

(W)

Y/G

CN-DISP

(Y)

AUTO SW

ELECTRONIC

CN-STM

CN-TH

CONTROLLER

(W)

(Y)

SENSOR

(PIPING TEMP.)

MOTOR

(MAIN)

FUSE

T 2.5A L 250V

MOTOR

CN-FM

(W)

W B Y

INDOOR UNIT

YELLOW

SENSOR (AIR TEMP)

SENSOR (PIPING TEMP)

SENSOR (COMP.TEMP)

COIL COMP (4-WAYVAVLE)

Fan Motor

1 2

3 4

1 3

CAPACITOR Fm2

FUSE2

T3.14A L250V

CN-TH (WHITE)

CN-TANK (WHITE)

Fm1

AC-WHT (WHITE)

AC-BLK (BLACK)

FUSE

DATA (RED)

BLUE

RED

TRADE MARK

COMPRESSOR TERMINAL

CT101

GRY

REACTOR

(BLUE)

(YELLOW)

(RED)

COMPRESSOR

Y/G

OUTDOOR FAN MOTOR RESISTANCE( )

CU-PE9DKD CU-PE12DKD

CONNECTING

L6LAHAG00001

Y-B M

Y-R A

COMPRESSOR RESISTANCE( )

CU-PE9DKD CU-PE12DKD

CONNECTING

U-V

U-W

V-W

L6LAJAG00001

290

287

Page 15

8 Operation Details

8.1 Operation and Display of Remote Controller

Original Setting

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

hr DELAY

FAN SPEED

AIR SWING

AUTO

HEAT

COOL

DRY

OFF

AUTO

hr DELAY

OFF ONON OFF

ON/OFF Button

ON/OFF Switch

Signal Transmitting

Indoor Indicator

Mode Selecting Button

1.Function and Display of the button:

AUTO, HEAT, COOL, DRY can be selected by pressing the button. Initial display of LCD is as follow

Green

MODE SET TEMP FAN SPEED AIR SWING

AUTO

HEAT

COOL

DRY

AUTO

Keeping the button depressed continuously, the operation mode will change as

HEAT

COOL

DRY

AUTO

Page 16

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

2.Shift time of the Mode selection button

Single press

Mode Selecting Button

LCD of Remote Control

Signal Transmitting

Keep depressed( less than 500ms)

Mode Selecting Button

LCD of Remote Control

Signal Transmitting

Keep depressed continuously

Mode Selecting Button

LCD of Remote Control

Signal Transmitting

AUTO

HEAT

500ms

COOL DRY

500ms

COOL DRY HEAT

AUTO

T1 T T T T2

T1=1s T2 250ms

T=250ms t 500ms

If the ON/OFF button is pressed after the operation mode is set, or change the operation mode during operation,

or the signal is received from the remote controller, the indoor indicator will flash or light up to start the operation.

Fan Speed Button

1.The display on the remote controller changes as follow by pressing the AIR SWING button.

AUTO

2.If the ON/OFF button is pressed after the fan speed mode is set, or change the fan speed mode during operation,

or the signal is received from the remote controller, the indoor indicator will flash or light up to start the operation.

3.The shift time of the fan speed button is the same to that of mode selecting button.

Page 17

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

Temp Adjusting Button

1.Press this button to change the set temperature

Increase the set temperature(Max.30 )

Decrease the set temperature(Min.16 )

2.If the ON/OFF button is pressed after temperature is set, or change the temperature during operation,

or the signal is received from the remote controller, the indoor indicator will flash or light up to start the operation.

Timer Set Button

1.The Function of the Timer-Setting Button

1) SELECT Button

When the airconditioner is in operation

OFF Timer Setting Exit Timer SettingOFF-ON Timer Setting

hr DELAY

OFF

DELAY

OFF ON

When the airconditioner is turned off.

Make sure that the cursor key on the display of remote control points to OFF .

Eixt Timer SettingON-OFF Timer Setting

FAN SPEED

AIR SWING

ON Timer Setting

hr DELAY

ON OFF

hr DELAY

DELAY

ON OFF

2) Timer Selecting Button A and B

The set time can be changed with manner of 1,2,3,4,5,6,7,8,9,10,11,12,1,2,3,4... By pressing the buttons.

Pressing the button A can change the time for ON Timer and OFF Timer, off time for OFF-ON Timer, on time for

ON-OFF Timer; Pressing the button B can change the time for on time for OFF-ON Timer and off time for

ON-OFF Timer setting.

3) SET/CANCEL Button Pressing the button to set or cancel the set timer during the timer setting or activate the previous timer setting.

After the timer setting is determined, “ON” or “OFF” will stop flashing. If the timer setting is cancelled, “ON” or

“OFF” will disappear on the remote control display.

The time on the remote control will change every hour.

By pressing this button for 5 seconds continuously, the number indicating the air quality sensor sensitivity will

appear in the remote control display. Then press or button to increase pr decrease the sensitivity.

Indicate

Sensitivity

Turn off the air quality Normal Standard hight

0123

Notes:

OFF Timer and OFF- ON Timer can only be set during the operation;

During the operation, if the ON Timer or ON-OFF Timer is set, the operation will be stopped.

Timer setting can operate only once.

If the OFF/ON button on the remote control or the AUTO Switch on the indoor unit is pressed, the timer setting

will be cancelled.

If Auto Restart Control occurs , timer setting will be cancelled.

Page 18

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

2.Timing Chart of Timer-Setting

1) OFF Timer Initial Time

Changed Time

OFF Timer Setting

Remote Control LCD

Operation Indicator

1:During timer operation changing the set time.

2:During timer operation press the ON/OFF button to cancel the OFF-Timer and the timer indicator on

the indoor unit will go off.

2) ON Timer

ON Timer Setting

Remote Control LCD

Timer Indicator

Indoor Unit

Timer Indicator

3 hours later OFF

3 hours

Initial Time

5 hours later ON

5 hours

2 hours

Changed Time

Operation Indicator

Indoor Unit

OFF/ON Button

Preparation for operation

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.

FAN SPEED

AIR SWING

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.

PRESS "OFF/ON" BUTTON

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.

Page 19

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

Air Swing Button

The airflow direction will change as below by pressing the AIR SWING button.

Airflow Direction:

AUTO

Display of Diagnosis

Refer to Diagnosis section.

Change the Code of Remote Controller

Change the code of remote controller by joining or cutting jump wire on the remote controller and indoor PCB.

Four codes(A,B,C,D) can be selected.

J----B

Inside the battery box of

remote controller.

On indoor PCB

Indoor PCB

8.2 Operation and Display of Indoor Unit

AUTO Operation Switch

SW ON

5s 8s 11s 16s

Function

AUTO Operation

Forced COOL

Forced HEAT

Short

Open

Various Setting Mode

Short

Individual

Counter-action

Open

21s

Number of beep

1. When the switch is pressed between 0 to 5 seconds, Auto Mode operation starts to function.

2. When the switch is pressed between 5 to 8 seconds, the unit is forced to operate in Cooling Mode.

3. When the switch is pressed between 8 to 11 seconds, the unit is forced to operate in Heating Mode.

4. When the switch is pressed between 11 to 16 seconds and together with the signal from the remote controller,

the unit can be changed to different controlling setting .

5. When the switch is pressed between 16 to 21 seconds, either H14 error detection selection mode or remote

controller’s signal receiving sound can be cancelled or turned on.

6. If the intake air temperature is less than 16 and the Forced Cooling is activated, because the prior operation

mode is heating, the compressor will stop for 3 minutes to start the Forced Cooling operation.

Page 20

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

Indoor Unit Indicator

ON OFF FLASH

Operation

(Green)

Timer

(Orange)

Air Quality

(Green Orange Red )

Timer set Timer not set

The air quality can be detected automatically by the air quality sensor and shown

by the color of the air quality indicator as bellow..

Color of indocator :Green Air qualuty: Normal

8.3 Common Features

Indoor Fan Motor Control

Run Stop

Orange Poor

Red Bad

Hot start, deice control, mode judging and ONTimer Operation detecting.

Malfunction happens.

1. Basic Fan Speed

Fan speed is determined by the setting of the remote control. And W5~W6 can be calculated according the equations below:

Those operation modes W4:Low , W8 : Hi , W10 have been regulated in the EEPROM data. Me- : W5=W4+W10 Me : W6=W5+W10 Me+ : W7=W6+W10

Cool.Dry

REMOTE

CONTROL

FAN SPEED

ROTATING SPEED

Heat

REMOTE

CONTROL

FAN SPEED

ROTATING SPEED

SHI HI Me Me- Lo- Slo Sslo

W9C W8C Calculated W4C

SHI

HI Me Me- Lo Lo- Slo Sslo

W8W W4W W3W

Me+

Calculated

W3C

W2C

W2W

W1W

W1C

Page 21

Basic fan speed of indoor unit

SHI W 9C 1420 1430

HI W 8C 1360 1370

Me+ W 7C 1190 1270

Me W 6C 1070 1160

COOL

Me- W 5C 950 1050

Lo W 4C 830 940

Lo- W 3C 770 880

Slo W 2C 740 840

SSLo W 1C 660 720

Interval W 10C 120 110

SHi W 8W 1420 1440

Me+ W 7W 1270 1340

Me W 6W 1150 1360

Me- W 5W 1030 1180

HEAT

Lo W 4W 910 1100

Lo- W 3W 670 800

Slo W 2W 580 580

SSLo W 1W 400 400

Interval W 10C 120 80

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

PE9DKE PE12DKE

2. Indoor Fan Control

Cool/Dry Operation

Protection Operation

Forced Cool

Minimum Control

Other than above

Mode judging for Auto Operation ON-Timer Operation detecting

Mode judging during ON-Timer detecting

Other

than above

Auto Fan

Manual Fan

Auto Fan

Manual Fan

Other than above

Cool Operation Dry Operation

Lo-

Setting of Remote

Slo

Normal Auto Fan

Slo

Fan Speed Set

Page 22

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

Heat Operation

Protection Operation

Forced Heat

Minimum Control

Mode judging in Auto Operation Preparing Operation of Timer-ON operation

Hot Start

Deice Control

Low Temperature Control

Maximum Control

Other

Other than above

than

above

Relay OFF(Comp OFF)

Indoor Piping Temp Control(Auto Fan)

Detection of Timer-ON Operation

Other than

above

Auto Fan Speed

Manual Fan Speed

Auto Fan Speed

Manual Fan Speed

Shi

Lo-

Stop

SSHi

SLo- or SSLo

Refer to the following contents

Setting On Remote Control

Auto

Setting On Remote Control

Auto Fan Speed for Cooling Operation Following eight patterns repeat over and over for auto fan speed. Each pattern persists ten

second.

No.C

No.B

No.A

Temp. Of outdoor unit under 35 Temp. Of outdoor unit above 35

No.A

No.B

No.C

PE9DKD PE12DKD

970

990

950

defg ha b

1070

1090

1050

No.A

No.B

No.C

PE9DKD PE12DKD

1130

1150

1110

1220

1240

1200

UNIT: rpm

Auto Fan Speed for Heating Operation

Refer to Piping Temperature Control.

Page 23

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

3. Deodorizing Control

This type of control is applicable on Cooling Mode and Soft Dry Mode operating only.

During cooling or soft dry operation with automatic fan speed, the unit will operate as state below for deodorizing purpose.

Deodorising Status

Compressor status

Period(sec)

Indoor fan speed

23 45

40 50 20 90

SloOFF

…

Note*

OFFSlo

COMP

OFF

Note*:Fan speed is automatic for cooling mode and Slo for soft dry mode.

OFF

20 90

OFFSlo

4.5.4....

OFF

Outdoor Fan Motor Control

1. Specification of outdoor fan motor

Model Fan Motor Speed(rpm)

CU-PE9DKD

CU-PE12DKD

2. Operation of the fan motor

The outdoor fan runs during the operation of the compressor or within 30 seconds after the compressor stops.

Compressor

Outdoor Fan

Induction Motor(6 Poles 1 speed)

30 seconds

670

770

OFF

Page 24

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

Frequency for Compressor Operation

1. Basic Frequency If the frequency for the compressor calculated is prohibited, 1 Hz larger than this calculated one will be selected.

Cool Dry Heat

12 13 14 15 16 17 51 12 85 17 18 12 52 9 86 18 9 52 86 19 53 87 19 53 87 20 54 88 20 21 55 89 21 55 89 22 56 9 90 22 56 12 90 23 57 24 58 92 24 58 92 25 59 26 60 27 61 28 62 96 28 62 96 29 63 97 29 63 97 30 64 98 30 64 98 31 65 99 32 66 9 100 32 66 12 100 33 67 101 33 67 12 101 34 68 102 34 68 12 102 35 12 69 103 35 69 9 103 36 9 70 104 36 70 104 37 71 105 37 71 9 105 38 12 72 106 38 72 9 106 39 12 73 40 74 41 9 75 109 41 75 109 42 76 43 77 44 12 78 45 12 79 113 45 79 113

46 80 12 46 80 47 81 13 47 81 48 82 14 48 82 12 49 83 15 49 83 12 50 84 16 50 84 12

51 85

54 88

91 23 57 91

93 25 59 93 94 26 60 94 95 27 61 95

31 65 99

107 39 73 107 108 40 74 108

110 42 76 110 111 43 77 111 112 44 78 12 112

2. Starting Control Within 300 seconds after the start-up of the compressor, the frequency for the compressor will change as below.

Start-up after the micron reset

Time From Start-up of

Compressor

60 60-120s 120-300

Min.Hz Max.Hz

40 40 40 40

\ 110

Start-up after thermal off ( Set Temp Reached)

Time From Start-up of

Compressor

60-120s

120-300

Min.Hz Max.Hz

38 38 38 38

\ 119

Start-up after thermal off ( Set Temp Reached, heating mode)

Time From Start-up of

Compressor

60 60-120s 120-300

Start-up under other conditions

Time From Start-up of

Compressor

60 60-120s 120-300

Min.Hz

40 40 40 40

\ 119

Min.Hz

40 40 40 40

\ 110

Max.Hz

Page 25

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

Protection Control

A. Time Delay Safety Control

1.The compressor will not start for 3 minutes after the stop of the operation.

2.This controlis not applicable if the power supply is turned off and turned on again.

B. 30 Seconds Forced Operation

1.Once the compressor starts operation, itwill not stop for 30 seconds.

2.However, it can be stopped using remote controller or Auto Switch on indoor unit.

C. Total Running Current Control

1.When the total outdoor unit running current(AC) exceeds I1value, the frequency for compressor will decline.

2.If the running current

will increase.

3.However, if the total outdoor running current exceeds 17.0A, compressor will be stopped immediatelyfor3minutes.

Current Value (A)(I1)

COOL

HEAT

is less than I1value for 10 seconds, the frequency for compressor

Outdoor Piping Temp

PE9DKD PE12DKD

A 4.56.1

38.5

B 4.4 6.0

4.05.0

37.5

D.IPM Protection Control

1.DC Peak Current Control 1>When electric current to IPM exceeds set value of DC17.3 1A,the compressor will stop.Itwill

restart after three minutes.

2>If the set value is exceeded againwithin 30 seconds, the operation will restart after one minute.

Ifthis condition repeats continuously for seven times, all indoor and outdoor relays will be cut off.

3>Error code [F99] will be displayed.

2.Overheating Protection Control When the IPM temperature rises to 90.0 , compressor will stop immediately. Compressor restarts after three minutes if the temperature decreases to 85 .

E. Compressor Overheating Prevention Control

The frequency isalso controlled by the temperature of the compressor.

Protection Control

112

108

Comp OFF

8Hz/45Sec down.

Min.17Hz

105

113 Hz

Free

Page 26

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

F. Compressor Protection Control (Gas Leakage)

1.When the conditions listed in the table occur, the compressor stops and restarts after three minutes.

2.Ifthis continuously occur for twice within20minutes, all indoor and outdoor relays will be cut off.

3.This controlis not applicable for deice operation.

Comp Frequency 45Hz or Above 64Hz or Above 58Hz or Above 73Hz or Above Total Outdoor Current

Indoor Piping Temp

I 1.3 Ib I 1.6 Ib I 1.3 Ib I 1.6

or Above 25 or Less 20 or Above 25 or Less

20 Operation Mode Cool/Dry Heat Cool/Dry Heat Model PE9DKD PE12DKD

G. Low Operation Frequency Protection Control

If one of the following conditions exists, the compressor will run with the frequency of 40 Hz

IntakeAir Temp

Outdoor Temp

Indoor Piping Temp

30 or 15

38 or 16 24 or 4

30 0

_______

Operation Mode Cool/Dry Heat

4-way Valve Contro

1. The 4-way valve will be turned on as the compressor starts to operate and remains on all the time during the heating

operation.

2.The 4-way valve remains on for less than 3 minutes after heating operation is stopped.

3.The 4-way valve remains off during cooling and soft dry operation.

4.If the operation isshifted from cooling or dry to heating mode, the switching of 4-way valve will be delayed for 3 minutes.

Heating

Comp

4-way Valve Status

4-way Valve Drive Signal

14V

Voltage Across 4-way Valve

5.Heating Operation Mode

Four minutes after the start of the operation, if the indoor piping temperature detected is lower than 0 , the operation

will stop.( Restarts in3minutes) Ifthissituation happens 4 times within30minutes, error code “F11 ” will be displayed.

6.Cooling Operation Mode

Four minutes after the start of the operation, if the indoor piping temperature detected ishigher than 45 , the operation

will stop ( Restarts in3minutes).Ifth

issituation happens 4 times within30minutes, error code “F11” will be displayed.

Page 27

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

Airflow Direction Control

A. Vertical Airflow Direction

Vane Angle

Manual Airflow

Cool

Auto Airflow

Manual Airflow

Dry

Auto Airflow 7°

Manual Airflow

Heat

Auto Airflow

Direction

Notes:

Manual Airflow Direction: The vertical airflow vane will be fixed at the angle desired according to the instructions of remote

controller no matter the operation is cooling, soft dry or heating mode.

Auto Airflow Direction: Cool : The vertical airflow vane will swing up and down within the range indicated in the

Dry : Remain in the horizontal direction.

Form above.

7° 14° 21° 28° 35°

7°~35°

7° 14° 21° 28° 35°

0° 15° 30° 45° 60°

14°

52°

7°

Heat : The vertical airflow vane will change according to indoor piping temperature as below..

Indoor Piping

Temperature

127

Intake air

Temperature

VerticalAirflow Vane

127

Free

Page 28

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

C. Mode Judgement for Auto Operation

Airflow Mode Setting

Initializing When Power-On Upper Limit

Auto Operation

Shifted to Auto Mode Same to Cool/Dry/Heat Same to Cool/Dry/Heat

Auto

Upper Limit

Manual

Lower Limit

Position Previously Set

Note:

When the air-conditioner is turned on, if manual airflow direction is selected and the angle is lower than the lower limit for heating operation, the airflow direction will be changed to the lower limit for heating mode. If Cooling operation is determined during the mode judgement, the airflow direction will be shifted to lower limit for cooling operation.

D. About Timer-Setting

During On-Timer operation, the airflow direction can be changed between Manual and Auto.

Self Diagnosis

A. About Self Diagnosis

When the air-conditioner is stopped due to malfunction detected by itself, the operation can be restarted using AUTO Switch on the indoor unit. In forced operation, the frequency for compressor and fan speed can not be changed and the

signal receiving sound is different. Normal Operation ON: “pep” Forced Operation ON: “pep”,“pep”,“pep”,“pep” Stop:“pep” Note: Refer to the Diagnosis Code Table for the malfunction when forced operation is not available.

B. Display of Error Code

1.Keeping the CHECK button on the remote controller depressed for 5 seconds, error code ranging from H11 to H99 can be displayed on the remote controller.

2.The error code is changed and diagnosis signal is transmitted to the indoor unit by pressing the Temp Up button on the remote control.

3.When the malfunction of the air-conditioner matches the error code on the remote control, four beeps can be heard

from the indoor unit and the operation indicator will light up.

4.Keep the CHECK button depressed continuously for 5 seconds to cancel the diagnosis function.

Indoor Unit Indoor Unit

TIMER POWER TIMER POWER

“Pep” “Pep, pep, pep, pep”

The error code doesn’t match the malfunction of indoor unit.

The error code matches the malfunction of indoor unit.

Remote controller

Page 29

C. Diagnosis Code Table

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

Code Abnormality/Protection Judgment Check

H00 Normal

H11

H14

H15

H16

H19 Indoor fan motor mechanism lock

H23

H25 Air filter abnormality

H27

H28

H30

H33

H97 Outdoor fan motor lock

H98 Indoor high pressure protection

H99

F11

F16

F90 PFC control

F91 Refrigeration cycle abnormality

F93 Compressor abnormality

F95 Cool high pressure protection

F96 IPM overheating protection

F97

F98 Total running current protection

F99

Indoor/Outdoor abnormal communication

Indoor intake air temp sensor abnormality

Outdoor compressor temperature sensor abnormality

Outdoor Current Transformer open circuit

Indoor heat exchanger temperature A sensor abnormality

Outdoor air temperature sensor abnormality

Outdoor heat exchanger temperature sensor abnormality

Discharge temperature sensor abnormality

Incorrect connection of Indoor/Outdoor cable

Indoor heat exchanger anti-freezing protection

Cooling/heating cycle changeover abnormality

Cooling/Dry cycle changeover abnormality

Outdoor compressor overheating protection

Outdoor Peak Current Protection Control

>1minute after starting operation

- Intake air temperature sensor(

Continue for 5 sec. Compressor temperature

- Outdoor PCB, IPM module

- Indoor PCB, fan motor

Continue for 5 sec

Continue for 5 sec Outdoor temperature sensor(

Continue for 5 sec. Outdoor heat exchanger sensor

Continue for 5 sec. Discharge temperature sensor

- Indoor/outdoor supply voltage

Twice within 30 minutes Outdoor fan motor

Indoor heat exchanger freezing

4 times occurrence within 30 minutes

4 times occurrence within 20 minutes

2 times occurrence within 20 minutes

4 times occurrence within 20 minutes

3 times occurrence within 20 minutes

4 times occurrence continuously within 30 minutes

Connecting cable, Indoor /outdoor PCB

defected or disconnected)

sensor(defected or disconnected)

Heat exchanger temperature sensor

(defected or disconnected)

defected or disconnected)

(defected or disconnected)

Air filter dirty

Air circulation s hort circuit

Insufficient refrigerant

Air filter dirty

4-way valve

V-coil

Indoor PCB

Voltage at PFC

No refrigerant

(3-way valve is closed)

Compressor

Outdoor refrigeration cycle

Excessive refrigerant

Improper heat radiation

IPM Insufficient refrigerant

Compressor

Excess refrigerant

Improper radiation

Outdoor PCB

IPM

Compressor

Emergency

Operation

Page 30

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

8.3 Cooling Operation

Anti-freezing Control

1 .Frequency of the compressor

For prevention of freezing of the indoor evaporator, the frequency of the compressor will be changed according to the indoor piping temperature.

Normal Control

Up Zone

Fixed

Down Zone

Comp Off

2 .Indoor Fan Control

Indoor fan speed changes according to the indoor fan speed.

Free

Cool:6 Dry

Up Zone

Outdoor Air Temp Control

Cool:9 Dry

Operation Frequency for Compressor

Outdoor Air Temp

>40Hz

13-51Hz

PE9DKD

Outdoor Air Temp

>40Hz

10-64Hz

12-64Hz

PE12DKD

Page 31

Anti-Fog Protection

The indoor fan speed ishigher than A but less than B.

The indoor fan speed is less than A

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

Outdoor AirTemp PE9DKD PE12DKD

Operation Time(S)

0-30 a 4558

30-90 b 4054

>30

90-420 c 4054

0-30 a 4558

30-90 b 4054

<30

90-420 c 35 46

0-30 a 35 46

30-90 b 35 46

>30

90-420 c 35 46

0-30 a 35 46

30-90 b 35 46

<30

90-420 c 35 46

Indoor Fan Speed A

Indoor Fan Speed B

Overload Protection For Cooling Operation

800 850

960 1020

Off

>40Hz 8Hz/45s Down

Fixed

40-51Hz(*1) 40-64Hz(*2)

The frequency for the compressor will change according to the outdoor piping temperature. *1 PE9DKD *2 PE12DKD

Page 32

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

8.4 Soft Dry Operation

Method of frequency shifting is the same to that of cooling operati on and the intakeair temperature is measured every second.

InitialFrequency for Compressor

PE9DKD PE12DKD

T<4 24 31

T 4 27 34

T=Outdoor Air Temp-Remote Control Setting Temp

Thermostat Features

2.5

Indoor Air TempSet Temp

-2. 5

Indoor Fan Control

1.5

Indoor Air TempSet Temp

-2.5

8.5 Heating Operation

Indoor Fan Control

Thermo-Off

Cool

Dry Slo

Thermo-Off

0.5

Temperature Shifting

0.5

Temperature Shifting

1.Indoor fan is controlled by the indoor piping temperature.

ManualFan Speed

K11

MinMe

Set Speed on Remote Control

Max. Lo

Stop

Max.

Lo-

Slo

K10

Piping Temperature()

K016K119K224K3

322K4342

K535K6

K739K842K955K10

K10

Page 33

Auto Fan Speed

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

K11

Max.

Fixed

Max.Lo

Stop

Fixed Down

Lo-

Slo

K10

K11

K9 K8

Max.

Up Up

Max.Lo

Stop

Fixed

Down

Lo-

Slo

K10

2.During heating operation, the maximum fan speed is Lo when the compressor stops.

3.Hot Start

When the heating operation starts, the indoor fan stops and the compressor runs with the frequency of 117Hz.

This is to prevent the cold airflow from blowing.

If the piping temperature rises to 19 , and the indoor fan speed and airflow direction varies with the indoor piping

temperature, the hot start control is completed.

Overload Protection Control

The frequency for the compressor is determined by indoor piping temperature.

Max.62 Hz

Max.110Hz

Stop

5Hz/30s Down

Max.47 Hz Min. 40 Hz

Fixed

Min. 40 Hz

Outdoor Air Temp Control

One minute after the start-up of the compressor, outdoor air temperature control starts.

Max. 64Hz

Min. 40Hz

Max. 110Hz

Min. 40Hz

Free

Page 34

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

New JIS Deice Operation

Deice operation starts immediately after the deice instruction is received. But the first deice operation starts 1 hour

after the heating operation is activated.

1.Outdoor heat exchanger temperature is lower than3 for 30minutes.

2.Outdoor heat exchanger temperature is lower than -1 continuously for 3 minutes.

Time Graph

Frequency for Compressor

Outdoor Fan

Outdoor Heat Exchanger Temperature.

Indoor Unit

4-way Valve

-1

Free

OFF

Free

OFF

Deice Operation

T3 T4 T5 T6 T7

Free

Deice Terminated

Frequency For Compressor

Indoor Fan

Outdoor Fan

4-way Valve

PE9DKD

PE12DKD

58Hz

ON OFF OFF OFF OFF ON

234

58Hz

OFF OFF OFF OFF ON ONON

71Hz

51Hz

56 7

51Hz

99Hz

Page 35

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

Normal Deice Operation

Deice operation will start as the deice operation instruction is launched. But the first deice operation starts one hour after

the heating operation starts.

Time Graph

Frequency for Compressor

Outdoor Fan

Outdoor Heat Exchanger Temperature.

Indoor Unit

4-way Valve

-2

Free

OFF

Free

OFF

Deice Operation

T3 T4 T5 T6 T7

Free

Deice Terminated

Frequency

PE9DKD

40Hz

234

40Hz

65Hz

56 7

40Hz

0Hz

For Compressor

PE12DKD

Indoor Fan

Outdoor Fan

4-way Valve

If one of the following situations exists, the instruction of the deice will be launched: The outdoor heat exchanger

temperature remains less than 3 for 120 minutes and -6 for 3 minutes continuously, the outdoor air temperature

is higher than -1 and the compressor is on.

The outdoor heat exchanger temperature remains less than 3 for 80 minutes and -7 for 3 minutes continuously,

the outdoor air temperature is higher than -1 and the compressor is on

The outdoor heat exchanger temperature remains less than 3 for 40 minutes and -9 for 3 minutes continuously,

the outdoor air temperature is higher than -3 and the compressor is on

The outdoor heat exchanger temperature remains less than 3 for 40minutes and -11 for 3 minutes continuously,

the outdoor air temperature is lower than -3 and the compressor is on

Note: The first deice operation occurs 60 minutes after the beginning of the operation.

40Hz

65Hz

ON OFF OFF OFF OFF OFF

OFF OFF OFF OFF ON ONON

OFF OFF OFF OFF OFF ONON

65Hz

40Hz

0Hz

Page 36

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

8.6 Automatic Operation

If the Auto operation mode is selected, the operation mode will be judged by set temperature on remote

control, intake air temperature and outdoor air temperature.

During operating mode judgement, indoor fan runs at low fan speed and outdoor fan runs in the purpose

of detecting the intake air temperature and outdoor air temperature (for 20 seconds)

HEAT COOL DRY

13 19 21 23 25

Set Temp=Remote Set Temp + T

Set Temp

Outdoor Air Temp

Set Temp on Remote Control

16,17,18

19,20,21,22

23,24,25,26

27,28,29,30

If the operation mode changed, T1, T2, T3 will change as follow:

Cooling /Soft Dry Heating Operation: -2

Heating Cooling /Soft Dry Operation: +2

T1 T2 T3

+10

-3

-5

-7

-8

Page 37

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

8.7 Delayed ON-Timer Control

Delay ON Timer ca be set using remote controller, the unit with timer set will start operate earlier than

the setting time. This is to provide a comfortable environment when reaching the set On time.

Seventy minutes before the set time for ON Timer or ON-OFF Timer setting, indoor ( at fan speed of

Lo-) and outdoor fan motor start operate for 20 seconds to determine the indoor intake air

temperature and outdoor air temperature in order to judge the operation mode.

From the above judgment, the decided operation will start operate earlier than the set time as shown

below.

Indoor intake air temperature ( )

10 Min

5Min

15 Min

Outdoor air temperature ( )

Cooling/Soft Dry Heating

Timer Signal Receiving Sound During Operation

Operation Sound Timer LED Timer Setting

ON Timer Set OFF Beep- ON Valid

OFF Timer Set ON Beep ON Valid ON-OFF Timer Set OFF Beep- ON Valid OFF-ON Timer Set ON Beep ON Valid

Indoor intake air temperature ( )

50 Min

45 Min

40 Min

Outdoor air temperature ( )

Timer Signal Receiving Sound When the Air Conditioner Stops

Operation Sound Timer LED Timer Setting

ON Timer Set OFF Beep ON Valid

OFF Timer Set OFF None OFF Invalid ON-OFF Timer Set OFF Beep ON Valid OFF-ON Timer Set OFF None OFF Invalid

8.8 Auto Restart Control

If there is a power failure, operation will be automatically restarted after 3-4 minutes when the power is resumed. It will start with previous operation mode and airflow direction.

Page 38

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

8.9 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.

20minutes

Maximum of Rs

MAXR1 of previous measuring period

Updating of MAXR

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.

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

Page 39

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

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.

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

(b)

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

Page 40

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

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.

Page 41

CS-PE9DKD / CU-PE

/ CS-PE 12DKD / CU-PE12 DKD

9DKD

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

ııııˇı

ˇı

Read the following “SAFETY PRECAUTIONS” carefully before installation.

ˇıˇı

ııııˇı

ˇı

Electrical work must be installed by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit

ˇıˇı

for the model to be installed.

ııııˇı

ˇı

The caution items stated here must be followed because these important contents are related to safety. The meaning of each

ˇıˇı

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)

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.

ııııˇı

ˇı

Carry out test running to confirm that no abnormality occurs after the installation. Then, explain to user the operation, care and

ˇıˇı

maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future referen ce.

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’s weight. 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 (R410A) 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.

ııııˇı

ˇı

When connecting the piping, do not use any existing (R22) pipes and flare nuts. Using such same may cause

ˇıˇı

abnormally high pressure in the refrigeration cycle (piping), and possibly result in explosion and injury. Use only R410A materials.

ııııˇı

ˇı

Thickness of copper pipes used with R410A must be more than 0.8 mm. Never use copper pipes thinner than 0.8

ˇıˇı

mm.

ııııˇı

ˇı

It is desirable that the amount of residual oil is less than 40 mg/10 m.

ˇıˇı

11. 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.

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CS-PE9DKD / CU-PE9DKD / CS-PE 12DKD / CU- PE12DKD

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.

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 15A/16A 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 15A/16A circuit breaker for permanent

connection. It must be a double pole witch with a minimum 3.5 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.

the

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CS-PE9DKD / CU-PE9DKD / CS-PE 12DKD / CU-PE12DKD

Attached accessories.

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

Installation plate

Installation plate fixing

screw

Remote control

Battery

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 2.5 m.

Drain elbow

Connecting Wire (Connector)

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.

Indoor/Outdoor Unit Installation Diagram

Length of power supply cord

About 1.1 m

Vinyl tape

About 1.8 m

5cm

or more

Piping direction Attention not to

Right

Right Rear

Right Bottom

Left

Rear

(Front side)

Left Bottom

Installation parts you should purchase ( )

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) ( )

bend up drain hose

Left

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

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 shor circuit of the discharged air.

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

Piping size

Liquid

Gas

3/8"

1/4"

Common

Length

(m)

7.5

Elevation

Max.

(m)

Max. Piping

Length

(m)

Additional

Refrigerant

(g/m)

Saddle ( )

Connecting cable

10 cm

or more

10 c

100

or m

30 cm

or mor

5-CORE WIRE/1.5 mm Type designation 245 IEC 57 or heavier cord

Additional drain hose ( )

1/4" Liquid side piping ( )

Gas side piping ( ) 3/8"

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

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CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU- PE12DKD

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

Screw

150 mm

Installation

plate

Measuring tape

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 75 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.

More than 450 mm

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.

::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

For the right and right bottom piping

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CS-PE9DKD / CU-PE9DKD / CS-PE 12DKD / CU-PE12DKD

Installthe IndoorUnit

Hook the indoor unit onto the upper portion of installation plate (Engage the indoor unit with the upper edge of the installation plate). Ensure the hooks are properly seated on the installation plate by moving in left and right.

Indoor unit

Securethe IndoorUnit

1. Tape the extra power supply cord in a bundle and keep it behind the chassis .

Ensure t hat the power s upply c ord is not clamped in between the unit's hook (2 positions) and installation plate .

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

Unit's

hook

Hooks at installation plate

Slee ve for piping hole

Piping

Drain hose

Installation plate



Slee ve for

piping hole

Drain

hose

Piping

Connecting cab le

Drain hose

Adjust the piping slightly downwards.

Connecting cab le

More than approx. 95 cm

Page 46

CS-PE9DK D / CU-PE 9DKD / CS-PE12DKD / CU-PE12DKD

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 4 x 1.5 mm 57

or heavier cord.

ııııˇı

ˇı

Ensure the color of wires of outdoor unit and the

ˇıˇı

terminal Nos. are the same to the indoor’s respectively.

ııııˇı

ˇı

Earth lead wire shall be longer than the other lead wires

ˇıˇı

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

flexible cord, type

designation 245 IEC

Terminals on the indoor unit

Color of wires

Terminals on the outdoor unit

ııııˇı

ˇı

Secure the cable onto the control board with the holder

ˇıˇı

1(L) 2(N) 3

(clamper).

2(N)1(L) 3

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CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU- PE12DKD

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.

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

ˇıˇı

nut with fingers.

ˇı

Further tighten the flare nut with torque wrench in specified

ˇıˇı

torque as stated in the table.

MODEL Piping size (Torque)

Gas Liquid

PE9DKD

PE12DKD

3/8” (42 N.m) 1/4” (18 N.m)

9.3. OUTDOOR UNIT

9.3.1. SELECT THE BEST LOCATI ON (Refer to “Select the best location ” section)

9.3.2. INSTALL THE OUTDOOR UNIT

ııııˇı

ˇı

After selecting the best location, start installation according

ˇıˇı

to Indoor/Outdoo r 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.

570

103.9

13.9

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.

Unit: mm

320

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Page 48

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU- PE12DKD

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 & OCEANI A 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.

ııııˇı

ˇı

Be sure to connect the end of the charging hose with the push pin to the service port.

ˇıˇı

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 “OPEN” using a hexagonal wrench (4 mm).

8. Mount valve caps onto the 2-way valve and the 3-way valve.

ııııˇı

ˇı

Be sure to check for gas leakage.

ˇıˇı

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.

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CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU- PE12DKD

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 looseni ng the screw.

2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4

type designation 245 IEC 57 or heavier cord.

Terminals on the indoor unit Colour of wires Terminals on the outdoor unit

1(L) 2(N) 3

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.

x 1.5 mm

flexible cord,

9.3.7. PIPE INSULATION

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.

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CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU- PE12DKD

DISPOSAL OF OUTDOOR UNIT DRAIN WATER

ıııı

ˇı

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

ˇıˇı

stand which is taller than 3 cm.

ııııˇı

ˇı

If the unit is used in an area where temperature falls below

ˇıˇı

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.

Drain elbow

Hose

Install the hose at an angle so that the water smoothly flows out.

CHECK THE DRAINAGE

ıııı

ˇı

Open front panel and remove air filters.

ˇıˇı

(Drainage checking can be carried out without removing the front grille.)

ııııˇı

ˇı

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

ˇıˇı

ıııı

ˇı

Ensure that water flows out from drain hose of the indoor

ˇıˇı

unit.

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 PERFORMANC E

ıııı

ˇı

Operate the unit for fifteen

ˇıˇı

Measure the temperature of the intake and discharge air.

ıı

Ensure the difference between the intake temperature and

ˇı

ııˇ ıˇı

the discharge is more than 8°C during cooling operation or

ıı

14°C during heating operation.

ıı

minutes or more.

Discharge air

CHECK ITEMS

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CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

10 Installation and Serving Air Conditioner Using R410A

10.1. OUTLINE

10.1.1 About R410A Refrigerant

1. Converting air conditioners to R410A

Since it was declared in1974 that chlorofluorocarbons (CFC), hydro chlorofluorocarbons (HCFC) and other substances pose a destructive danger to the ozone layer in the earth´s upper stratosphere (20 to 40 km above the earth), measures have been taken around the world to prevent this destruction. The R22 refrigerant which has conventionally been used in ACs is an HCFC refrigerant and, therefore, possesses this ozone destroying potential. International regulations (the Montreal Protocol Ozone-Damaging Substances) and the domestic laws of various countries call for the early substitution of R22 by a refrigerant which will not harm the ozone layer.

In ACs, the HFC refrigerant which has become the mainstream alternative called R410A.Compared with R22, the pressure of R410A is approximately 1.6 times as high at the same refrigerant temperature, but the energy efficiency is about the same. Consisting of hydrogen (H), fluorine (F) and carbon (C), R410A is an HFC refrigerant. Another typical HFC refrigerant is R407C. While the energy efficiency of R407C is some what inferior to that of R410A, it offers the advantage of having pressure characteristics which are about the same as those of R22, and is used mainly in packaged Acs.

2. The characteristics of HFC (R410A) refrigerants

a. Chemical characteristics

The chemical characteristics of R410A are similar to those of R22 in that both are chemically stable, nonflammable refrigerants with low toxicity. However, just like R22, the specific gravity of R410A gas is heavier than that of air. Because of this, it can cause an oxygen deficiency if it leaks into a closed room since it collects in the lower area of the room. It also generates toxic gas when it isdirectly exposed to a flame, so it must be used in a well ventilated environment where it will not collect.

Table 1 Physical comparison of R410A and R22

R410A

Composition (wt%)

Boiling point (°C)

Vaporizing pressure (25°C)

Saturated vapor density

Flammability

Ozone-destroying point (ODP)

Global-warming point (GWP)

b. Compositional change (pseudo-azeotropic characteristics)

R410A is a pseudo-azeotropic mixture comprising the two components R32 and R125. Multi-component

refrigerants with these chemical characteristics exhibit little compositional change even from phase changes

due to vaporization 9or condensation), which means that there is little change in the circulating refrigerant

composition even when the refrigerant leaks from the gaseous section of the piping.

Accordingly, R410A can be handled in almost the same manner as the single-component refrigerant R22.

However, when charging, because there is a slight change in composition between the gas phase and the liquid

phase inside a cylinder or other container, charging should basically begin with the liquid side.

c. Pressure characteristics

As seen in Table 2, the gas pressure of R410A is approximately 1.6 times as high as that of R22 at the same refrigerant temperature, which means that special R410A tools and materials with high-pressure specifications must be used for all refrigerant piping work and servicing.

Table 2 Comparison of R410A and R22 saturated vapor density

Refrigerant Temperature( )

-20

°C

R32/R125(50/50)

-51.4

1.56 Mpa(15.9 kgf/cm2)

64.0 kg/m3

Non-flammable

1730

R410A

0.30

0.70

1.35

2.30

3.73

4.15

0.94 Mpa(9.6 kgf/cm2)

R22

R22(100)

-40.8

44.4 kg/m3

Non-flammable

0.005

1700

R22

0.14

0.40

0.81

1.42

2.33

2.60

Page 52

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

d. R410A refrigerating machine oil

Conventionally, mineral oil or a synthetic oil such as alkylbenzene has been used for R22 refrigerating machine oil. Because of the poor compatibility between R410A and conventional oils like mineral oil, however, there is a tendency for the refrigerating machine oil to collect in the refrigerating cycle. For this reason, polyester and other synthetic oils which have a high compatibility with R410A are used as refrigerating machine oil. Because of the high hygroscopic property of synthetic oil, more care must be taken in its handling than was necessary with conventional refrigerating machine oils. Also, these synthetic oils will degrade if mixed with mineral oil or alkylbenzene, causing clogging in capillary tubes or compressor malfunction. Do not mix them under any circumstances.

10.1.2 Safety Measure When Installing / Receiving Refrigerant Piping

Cause the gas pressure of R410A is approximately 1.6 times as high as that of R22, a mistake in installation or servicing could result in a major accident. It is essential that you use R410a tools and materials, and that you observe the following precautions to ensure safety.

Do not use any refrigerant other than R410A in Acs that have been used with R410A.

If any refrigerant gas leaks while you are working, ventilate the room. Toxic gas may be generated if refrigerant gas is exposed to a direct flame.

When installing or transferring an AC, do not allow any air or substance other than R410A to mix into the refrigeration cycle. If it does, the pressure in the refrigeration cycle can become abnormally high, possibly causing an explosion and/or injury.

After finishing the installation, check to make sure there is no refrigerant gas leaking.

When installing or transferring an AC, follow the instructions in the installation instructions carefully. Incorrect installation can result in an abnormal refrigeration cycle or water leakage, electric shock, fire, etc.

Do not perform any alterations on the AC unit under any circumstances. Have all repair work done by a specialist. Incorrect repairs can result in an water leakage, electric shock, fire, etc.

10.2. TOOL FOR INSTALLING / SERVICING REFRIGERANT PIPING

10.2.1 Necessary Tools

In order to prevent an R410A AC from mistakenly being charged with any other refrigerant, the diameter of the 3-way valve service port on the outdoor unit has been changed. Also, to increase its ability to withstand pressure, the opposing dimensions have been changed for the refrigerant pipe flaring size and flare nut. Accordingly, when installing or servicing refrigerant piping, you must have both the R410A and ordinary tools listed below.

Table 3 Tools for installation, transferring or replacement

Type of work

Flaring

Bending, connecting pipes

Air purging

Gas leak inspection

Flaring tool (clutch type), pipe cutter, reamer

Torque wrench (nominal diameter 1/4, 3/8,1/2) Fixed spanner (opposing sides 12 mm, 17 mm, 19 mm) Adjustable wrench, Spring bender

Vacuum pump Hexagonal wrench (opposing sides 4 mm)

Gas leak inspection fluid or soapy water

Ordinary tools

Copper pipe gauge for clearance Adjustment, flaring tool (clutch type)*1)

Manifold gauge, charging hose, vacuum pump adaptor

Electric gas leak detector for HFC refrigerant*2)

*1) You can use the conventional (R22) flaring tool. If you need to buy a new tool, buy the R410A type. *2) Use when it is necessary to detect small gas leaks.

*For other installation work, you should have the usual tools, such as screwdrivers (+,-), a metal-cutting saw, an electrical drill, a hole core drill (65 or 70 dia.), a tape measure, a level, a thermometer, a clamp meter, an insulation tester, a voltmeter, etc.

Table 4 Tool for serving

Type of work

Refrigerant charging

Brazing (Replacing refrigerating

cycle part*1)

Nitrogen blow set (be sure to use nitrogen blowing for all brazing), and brazing), and brazing machine

Ordinary tools

Electronic scale for refrigerant charging Refrigerant cylinder Charging orifice and packing for refrigerant cylinder

R410A tools

*1) Always replace the dryer of the outdoor unit at the same time. The replacement dryer is wrapped in a vacuum pack. Replace it last among the refrigerating cycle parts. Start brazing as soon as you have opened the vacuum pack, and begin the vacuuming

Page 53

10.2.2. R410A Tools

1. Cooper tube gauge for clearance adjustment (used when flaring with the conventional flaring tool (clutch type))

ııııˇı

ˇı

This gauge makes it easy to set the clearance for the

ˇıˇı

copper tube to 1.0-1.5 mm from the clamp bar of the flaring tool.

2. Flaring tool (clutch type)

ııııˇı

ˇı

In the R410A flaring tool, the receiving hole for the

ˇıˇı

clamp bar is enlarged so the clearance from the clamp bar can be set to 0-0.5 mm, and the spring inside the tool is strengthened to increase the strength of the pipeexpanding torque. This flaring tools can also be used with R22 piping, so we recommend that you select it if you are buying a new flaring tool.

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU- PE12DKD

Fig. 1 Copper tube gauge for clearance adjustment

Fig. 2 Flaring tool (clutch type)

3. Torque wrenches

Table 5

Conventional wrenches R410A wrenches For 1/4 (opposite side x torque) 17 mm x 18 N.m (180 kgf.cm) 17 mm x 18 N.m (180 kgf.cm) For 3/3 (opposite side x torque) 22 mm x 42 N.m (420 kgf.cm) 22 mm x 42 N.m (420 kgf.cm) For 1/2 (opposite side x torque) 24 mm x 55 N.m (550 kgf.cm) 26 mm x 55 N.m (550 kgf.cm)

4. Manifold gauge

ııııˇı

ˇı

Because the pressure is higher for the R410A type, the conventional type cannot be used.

ˇıˇı

Table 6 Difference between R410A and conventional high / low-pressure gauges

High-pressure gauge (red) -76 cmHg - 35 kgf/cm

High-pressure gauge (blue) -76 cmHg - 17 kgf/cm

Conventional Gauges R410A Gauges

Fig. 3 Torque wrenches

-0.1 - 5.3 Mpa -76 cmHg - 53 kgf/cm

-0.1 - 3.8 Mpa -76 cmHg - 38 kgf/cm

ııııˇı

ˇı

The shape of the manifold ports has been changed to prevent the possibility of mistakenly charging with another type of

ˇıˇı

refrigerant.

Table 7 Difference between R410A and conventional manifold port size

Port size 7/6 UNF 20 threads 1/2 UNF 20 threads

Conventional gauges R410A gauges

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CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU- PE12DKD

5. Charging hose

ııııˇı

ˇı

The pressure resistance of the charging hose has been

ˇıˇı

raised to match the higher pressure of R410A. The hose material has also been changed to suit HFC use, and the size of the fitting has been changed to match the manifold ports.

Table 8 Difference between R410A and conventional charging hoses

Pressure resistance

Material NBR rubber HNBR rubber Nylon coating inside

Working pressure 3.4 MPa (35 kgf/cm3) 5.1 MPa (52 kgf/cm3) Bursting pressure 17.2 MPa (175 kgf/cm3) 27.4 MPa (280 kgf/cm3)

6. Vacuum pump adaptor

ııııˇı

ˇı

When using a vacuum pump for R410A, it is necessary

ˇıˇı

to install an electromagnetic valve to prevent the vacuum pump oil from flowing back into the charging hose. The vacuum pump adaptor is installed for that purpose. if the vacuum pump oil (mineral oil) becomes mixed with R410A, it will damage the unit.

Fig. 4 Manifold gauge charging hose

Conventional hoses R410A hoses

7. Electric gas leak detector for HFC refrigerant

ııııˇı

ˇı

The leak detector and halide torch that were used with

ˇıˇı

CFC and HCFC cannot be used with R410A (because there is no chlorine in the refrigerant).

ııııˇı

ˇı

The present R134a leak detector can be used, but the

ˇıˇı

detection sensitivity will be lower (setting the sensitivity for R134a at 1, the level for R410A will drop to 0.6).

ııııˇı

ˇı

For detecting small amounts of gas leakage, use the

ˇıˇı

electric gas leak detector for HFC refrigerant. (Detection sensitivity with R410A is about 23 g/year).

Fig. 5 Vacuum pump adaptor

Fig. 6 Electric gas leak detector for HFC refrigerant

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8. Electronic scale for refrigerant charging

ııııˇı

ˇı

Because of the high pressure and fast vaporizing speed

ˇıˇı

of R410A, the refrigerant cannot be held in a liquid phase inside the charging cylinder when charging is done using the charging cylinder method, causing bubbles to form in the measurement scale glass and making it difficult to see the reading. (Naturally, the conventional R22 charging cylinder cannot be used because of the differences in the pressure resistance, scale gradation, connecting port size, etc.)

ııııˇı

ˇı

The electronic scale has been strengthened by using a

ˇıˇı

structure in which the weight detector for the refrigerant cylinder is held by four supports. It is also equipped with two connection ports, one for R22 *7/16 UNF, 20 threads) and one for R410A (1/2 UNF, 20 threads), so it can also be used for conventional refrigerant charging.

ııııˇı

ˇı

There are two types of electronic scales, one for 10-kg

ˇıˇı

cylinders and one for 20-kg cylinders. (The 10-kg cylinder is recommended.)

Refrigerant charging is done manually by openin g and closing the valve.

CS-PE9DKD / CU-PE9DKD/ CS-PE12DKD / CU-PE12DKD

Fig. 7 Electronic scale for refrigerant charging

9. Refrigerant cylinders

ııııˇı

ˇı

The R410A cylinde rs are labeled with the refrigerant

ˇıˇı

name, and the coating color of the cylinder protector is pink, which is the color stipulated by ARI of the U.S.

ııııˇı

ˇı

Cylinder equipped with a siphon tube are available to

ˇıˇı

allow the cylinde r to stand upright for liquid refrigerant charging.

10. Charging orifice and packing for refrigerant cylinders

ııııˇı

ˇı

The charging orifice must match the size of the charging

ˇıˇı

hose fitting (1/2 UNF, 20 threads).

ııııˇı

ˇı

The packing must also be made of an HFC-resistant

ˇıˇı

material.

10.2.3. R410A Tools Which Are Usable for R22 Models

Table 9 R410A tools which are usable for R22 models

R410A tools Usable for R22 models (1) Copper tube gauge for clearance adjustment OK (2) Flaring tool (clutch type) OK (3) Manifold gauge NG (4) Charging hose NG (5) Vacuum pump adaptor OK (6) Electric gas leak detector for HFC refrigerant NG (7) Electronic scale for refrigerant charging OK (8) Refrigerant cylinder NG (9) Charging orifice and packing for refrigerant cylinder NG

Fig. 8 Refrigerant cylinders

Fig. 9 Charging orifice and packing

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10.3. REFRIGERANT PIPING WORK

10.3.1. Piping Material s

It is recommended that you use copper and copper alloy jointless pipes with a maximum oil adherence of 40 mg/10m. Do not used pipes that are crushed, deformed, or discolored (especially the inside surface). If these inferior pipes are used, impurities may clog the expansion valves or capillaries. Because the pressure of ACs using R410A is higher than those using R22, it is essential that you select materials that are appropriate for these standards. The thickness of the copper tubing used for R410A is shown in Table 10. Please be aware that tubing with a thickness of only 0.7 mm is also available on the market, but this should never be used.

Table 8 Difference between R410A and conventional charging hoses

Soft pipe Thickness (mm)

Nominal diameter Outside diameter (mm) R410A (Reference) R22

1/4 6.35 0.80 0.70 3/8 9.52 0.80 0.70 1/2 12.7 0.80 0.70

10.3.2. Process ing and Connec ting Piping Material s

When working with refrigerant piping, the following points must be carefully observed: no moisture od dust must be allowed to enter the piping, and there must be no refrigerant leaks.

1. Procedure and precautions for flaring work

a. Cut the pipe

Use a pipe cutter, and cut slowly so the pipe will not be deformed.

b. Remove burrs and clean shavings from the cut surface

If the shape of the pipe end is poor after removing burrs, or if shavings adhere to the flared area, it may lead to refrigerant leaks. To prevent this, turn the cut surface downward and remove burrs, then clean the surface, carefully.

c. Insert the flare nut (be sure to used the same nut that is

used on the AC unit)

d. Flaring

Check the clamp bar and the cleanliness of the copper pipe. Be sure to sued the clamp bar to do the flaring with accuracy. Use either an R410A flaring tool, or a conventional flaring tool. flaring tools come in different sizes, so be sure to check the size before using. When using a conventional flaring tool, use the copper pipe gauge for clearance adjustment, etc., to ensure the correct A dimension (see Fig. 10)

Fig. 10 Flaring dimensions

Fig. 11 Relation between the flare nut structure and flaring tool end

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CS-PE9D KD / CU-PE9DKD / CS-PE12DKD / CU-PE12 DKD

Nominal

diameter

(in)

1/4 6.35 0.8 0 - 0.5 1.0 - 1.5 1.5 - 2.0 3/8 9.52 0.8 0 - 0.5 1.0 - 1.5 1.5 - 2.0 1/2 12.70 0.8 0 - 0.5 1.0 - 1.5 2.0 - 2.5

Nominal

diameter

(in)

1/4 6.35 0.8 0 - 0.5 0.5 - 1.0 1.0 - 1.5 3/8 9.52 0.8 0 - 0.5 0.5 - 1.0 1.0 - 1.5 1/2 12.70 0.8 0 - 0.5 0.5 - 1.0 1.5 - 2.0

Nominal

diameter (in)

1/4 6.35 0.8 9.1 9.2 6.5 13 17 3/8 9.52 0.8 13.2 13.5 9.7 20 22 1/2 12.70 0.8 16.6 16.0 12.9 23 26

Nominal

diameter (in)

1/4 6.35 0.8 9.0 9.2 6.5 13 17 3/8 9.52 0.8 13.0 13.5 9.7 20 22 1/2 12.70 0.8 16.2 16.0 12.9 20 24

Outside

diameter

(mm)

Outside

diameter

(mm)

Outside

diameter (mm)

Outside

diameter (mm)

Table 13 R410A flaring and flare nut dimensions Unit: mm

Wall thickness

(mm)

Table 14 R410A flaring and flare nut dimensions Unit: mm

Wall thickness

(mm)

Table 11 R410A flaring dimensions

Wall thickness

(mm)

Table 12 R410A flaring dimensions

Wall thickness

(mm)

A +0, -0.4 B

R410A flaring

tool, clutch type

R410A flaring

tool, clutch type

dimension

A (mm)

Conventional flaring tool

Clutch type Wing-nut type

A (mm)

Conventional flaring tool

Clutch type Wing-nut type

dimension

Flare nut

width

Flare nut

width

2. Procedure and precautions for flare connection

a. Check to make sure there are no scratches, dust, etc., on the flare and union.

b. Align the flared surface with the axial center of the union.

c. Use a torque wrench, and tighten to the specified torque. The tightening torque for R410A is the same as the conventional

torque value for R22. Be careful, because if the torque is too weak, it may lead to a gas leak. If it is too strong, it may split the flare nut or make it impossible to remove the flare nut.

Nominal

diameter (in)

1/4 6.35 14 - 18 (140 - 180) 18 (180) 3/8 9.52 33 - 42 (330 -420) 42 (420) 1/2 12.70 55 (550) 55 (550)

Table 15 R410A tightening torque

Outside

diameter (mm)

Tightening torque

N.m (kgf.cm)

Torque wrench tightening torque

N.m (kgf.cm)

10.3.3. Storing and managin g Piping Material s

1. Types of piping and their storage The following is a general classification of the refrigerant pipe materials used for ACs.

Common names

Refrigerant pipe materials

Pipes with heat inusulating covers

Pipes without heat insulating cover (copper ioes)

Unflared : Sheathed copper pipes

Unflared : copper pipes

Because the gas pressure of R410A is approximately 1.6 times as high as that of R22, copper pipes with the thickness shown in Table 10, and with minimal impurities must be used. Care must also be taken during storage to ensure that pipes are not crushed, deformed, or scratched, and that no dust, moisture or other substance enters the pipe interior. When storing sheathed copper pipes or plain copper pipes, seal the openings by pinching or taping them securely.

2. Makings and management

a. Sheathed copper pipes and copper-element pipes

When using these pipes, check to make sure that they are the stipulated thickness. For flare nuts, be sure to used the same nut that is used on the AC unit.

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b. Copper pipes

Use only copper pipes with the thickness given in table 10, and with minimal impurities. Because the surface of the pipe is exposed, you should take special care, and also take measures such as marking the pipes to make sure they are easily distinguished from other piping materials, to prevent mistaken use.

3. Precautions during refrigerant piping work Take the following precautions on-site when connecting pipes. (Keep in mind that the need to control the entry of moisture and dust is even more important that in conventional piping).

a. Keep the open ends of all pipes sealed until connection with AC equipment is complete.

b. Take special care when doing piping work on rainy days. The entering of moisture will degrade the refrigerating machine oil,

and lead to malfunctions in the equipment.

c. Complete all pipe connections in as short a time as possible. If the pipe must be left standing for a long time after removing

the seal, it must be thoroughly purged with nitrogen, or dried with a vacuum pump.

10.4. INSTALLATION, TRANSFERRING, SERVICING

10.4.1. Inspecting Gas Leaks with a Vacuum Pump for New Installations (Using New

Refrigerant Piping)

1. From the viewpoint of protecting the global environment, please do not release refrigerant into the atmosphere.

a. Connect the projecting side (pin-pushing side) of the charging hose for the manifold gauge to the service port of the 3-way

valve. (1)

b. Fully open the handle Lo of the manifold gauge and run the vacuum pump. (2) (If the needle of the low-pressure gauge

instantly reaches vacuum, re-check step a).)

c. Continue the vacuum process for at least 15 minutes, then check to make sure the low-pressure gauge has reached -0.1

MPa (-76 cmHg). Once the vacuum process has finished, fully close the handle Lo of the manifold gauge and stop the vacuum pump operation, then remove the charging hose that is connected to the vacuum pump adaptor. (Leave the unit in that condition for 1-2 minutes, and make sure that the needle of the manifold gauge does not return.) (2) and (3)

d. Turn the valve stem of the 2-way valve 90 counter-clockwise to open it, then, after 10 seconds, close it and inspect for a gas

leak (4)

e. Remove the charging hose from the 3-way valve service port, then open both the 2-way valve and 3-way valve. (1) (4) (Turn

the valve stem in the counter-clockwise direction until it gently makes contact. Do not turn it forcefu lly).

f. Tighten the service port cap with a torque wrench (18 N.m (1.8 kgf.m)). (5) Then tighten the 2-way valve and 3-way valve

caps with a torque wrench (42 N.m (4.2 kgf.m))

g. After attaching each of the caps, inspect for a gas leak around the cap area. (5) (6)

Precau tions

ııııˇı

ˇı

Be sure to read the instructions for the vacuum pump,

ˇıˇı

vacuum pump adaptor and manifold gauge prior to use, and follow the instructions carefully.

ııııˇı

ˇı

Make sure that the vacuum pump is filled with oil up to

ˇıˇı

the designated line on the oil gauge.

ııııˇı

ˇı

The gas pressure back flow prevention valve on the

ˇıˇı

charging hose is generally open during use. When you are removing the charging hose from the service port, it will come off more easily if you close this valve.

Fig. 12 Vacuum pump air purging configuration

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10.4.2. Transferring (Using New Refrigerant Piping)

1. Removing the unit

a. Collecting the refrigerant into the outdoor unit by pumping down

The refrigerant can be collected into the outdoor unit (pumping down) by pressing the TEST RUN button, even when the temperature of the room is low.

ııııˇı

ˇı

Check to make sure that the valve stems of the 2-way valve and 3-way valve have been opened by turning them counter-

ˇıˇı

clockwise. (Remove the valve stem caps and check to see that the valve stems are fully opened position. Always use a hex wrench (with 4-mm opposin g sides) to operate the valve stems.)

ııııˇı

ˇı

Press the TEST RUN button on the indoor unit, and allow preliminary for 5-6 minutes. (TEST RUN mode)

ˇıˇı

ııııˇı

ˇı

After stopping the operation, let the unit sit for about 3 minutes, then close the 2-way valve by turning the valve stem in

ˇıˇı

the clockwise direction.

ııııˇı

ˇı

Press the TEST RUN button on the indoor unit again, and after 2-3 minutes of operation, turn the valve stem of the 3-

ˇıˇı

way valve quickly in the clockwise direction to close it, then stop the operation.

ııııˇı

ˇı

Tighten the caps of the 2-way valve and 3-way valve to the stipulated torque.

ˇıˇı

ııııˇı

ˇı

Remove the connection pipes (liquid side and gas side).

ˇıˇı

2. Installing the unit Install the unit using new refrigerant piping. Follow the instructions in section 4.1 to evacuate the pipes connecting the indoor and outdoor units, and the pipes of the indoor unit, and check for gas leaks.

10.4.3. AC Units Replacement (Using Existing Refrigerant Piping)

When replacing and R410A AC unit with another R410A AC unit, you should re-flare the refrigerant piping. Even though the replacement AC unit uses the R410A, problems occur when, for example, either the AC unit maker or the refrigerating machine oil is differen t. When replacing an R22 AC unit with an R410A AC unit, the following checks and cleaning procedures are necessary but are difficult to do because of the chemical characteristics of the refrigerating machine oil (as described in items c) and d) of section

10.1.1.(2)). In this case, you should use new refrigerant piping rather than the existing piping.

1. Piping check Because of the different pressure characteristics of R22 and R410A , the design pressure for the equipment is 1.6 times different. the wall thickness of the piping must comply with that shown in Table 10, but this is not easy to check. Also, even if the thickness is correct, there may be flattened or bent portions midway through the piping due to sharp curves. Buried sections of the piping also cannot be checked.

2. Pipe cleaning A large quantity of refrigerating machine oil (mineral oil) adheres to existing pipes due to the refrigeration cycle circulation. If the pipes are used just as they are for the R410A cycle, the capacity will be lowered due to the incompatibility of this oil with the R410A, or irregularities may occur in the refrigeration cycle. For this reason, the piping must be thoroughly cleaned, but this is difficult with the present technology.

10.4.4. Refrigerant Compatibility (Using R410A Refrigerant in R22 ACs and Vice Versa)

Do not operate an existing R22 AC with the new R410A refrigerant. Doing so would result in improper functioning of the equipment or malfun ction, and might lead to a major accident such as an explosion in the refrigeration cycle. Similarly, do not operate an R410A AC with R22 refrigerant. The chemical reaction between the refrigerating machine oil used in R410A ACs and the chlorine that is contained in R22 would cause the refrigerating machine oil to degrade and lead to malfunction.

10.4.5. Recharging Refrigerant During Servicing

When recharging is necessary, insert the specified amount of new refrigerant in accordance with the following procedure.

1. Connect the charging hose to the service port of the outdoor unit.

2. Connect the charging hose to the vacuum pump adaptor. At this time, fully open the 2-way valve and 3-way valve.

3. Fully open the handle Lo of the manifold gauge, turn on the power of the vacuum pump and continue the vacuum process for at least one hour.

4. Confirm that the low pressure gauge shows a reading of -0.1 Mpa (-76 cmHg), then fully close the handle Lo, and turn off the vacuum pump. Wait for 1-2 minutes, then check to make sure that the needle of the Low pressure gauge has not returned. See Fig. 13 for the remaining steps of this procedure.

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5. Set the refrigerant cylinder onto the electronic scale, then correct the hose the cylinde r and to the connection port for the electronic scale. (1)(2)

Precau tion:

Be sure to set up the cylinde r for liquid charging. If you use a cylinder equipped with a siphon tube, you can charge the liquid without having to turn the cylinder around

6. Remove the charging hose of the manifold gauge from the vacuum pump adaptor, and connect it to the connection port of the electronic scale. (2)(3)

7. Open the valve of the refrigerant cylinder, then open the charging valve slightly and close it. Next, press the check valve of the manifold gauge and purge the air. (2)(4) (Watch the liquid refrigerant closely at this point.)

8. After adjusting the electronic scale to zero, open the charging valve, then open the valve Lo of the manifold gauge and charge with the liquid refrigerant. (2)(5) (Be sure to read the operating instructions for the electronic scale.)

9. If you cannot charge the stipulated amount, operate the unit in the cooling mode while charging a little of the liquid at a time (about 150 g/time as a guideline). If the charging amount is insufficient from one operation, wait about one minute, then use the same procedure to do the liquid charging again.

Precau tion:

Never use the gas side to allow a larger amount of liquid refrigerant to be charged while operating the unit.

10. Close the charging valve, and after charging the liquid refrigerant inside the charging hose, fully close the valve Lo of the manifold gauge, and stop the operation of the unit. (2)(5)

11. Quickly remove the charging hose from the service port. (6) If you stop midway through, the refrigerant that is in the cycle will be discharged.

12. After putting on the caps for the service port and operating valve, inspect around the caps for a gas leak. (6)(7)

Fig. 13 Re-charging refrigerant

10.4.6. Brazing

As brazing requires sophisticated techniques and experiences, it must be performed by a qualified person. In order to prevent the oxide film from occurring in the pipe interior during brazing, it is effective to proceed with brazing while letting dry nitrogen gas (N2) flow.

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1. Attach a reducing valve to the nitrogen gas cylinder.

2. Attach a reducing valve to the nitrogen gas cylinder.

3. Apply a seal onto the clearance between the piping and inserted pipe for the nitrogen gas in order to prevent the nitrogen gas from flowing backward.

4. When the nitrogen gas is flowing, be sure to keep the piping end open.

5. Adjust the flow rate of nitrogen gas so that it is lower than 0.05 m

/h, or 0.02 MPa (0.2 kgf/cm2) by means of the reducing valve.

6. After taking the steps above, keep the nitrogen gas flowing until the piping cools down to a certain extent (i.e. temperature at which pipes are touchable with finger).

7. Completely remove the flux after brazing.

Cautions during brazing

1. General Cautions

a. The brazing strength should be high as required.

b. After operation, airtightness should be kept under pressurized condition.

c. During brazing do not allow component materials to become damaged due to overheating.

d. The refrigerant pipe work should not become blocked with scale or flux.

e. The brazed part should not restrict the flow in the refrigerant circuit.

f. No corrosion should occur from the brazed part.

2. Preventing of Overheating

Due to heating, the interior and exterior surfaces of treated metal may oxidize. Especially, when the interior of the refrigerant circuit oxidizes due to overheating, scale occurs and stays in the circuit as dust, thus exerting a fatally adverse effect. So, make brazing at adequate brazing temperature and with minimum of heating area.

3. Overheating Protection

In order to prevent components near the brazed part from overheating damaged or quality deterioration due to flame or heat, take adequate steps for protection such as (1) by shielding with a metal plate, (2) by using a wet cloth, and (3) by means of heat absorbent.

4. Movement during Brazing

Eliminate all vibration during brazing to protect brazed joints from cracking and breakage.

5. Oxidation Preventative

In order to improve the brazing efficiency, various types of antioxidant are available on the market. However, the constituents of these are widely varied, and some are anticipated to corrode the piping materials, or adversely affect HFC refrigerant, lubricating oil, etc. Exercise care when using an oxidation preventive.

10.4.7. Servicing Tips

The drier must also be replace d whene ver replaci ng the refrige rant cycle parts. Replac ing the refrige rant cycle parts first before replacing the drier. The drier is supplie d in a vacuum pack. Perform brazing immediately after opening the vacuum pack, and then start the vacuum within t wo hours. In addition, the drier also needs to be replace d when the refrige rant has leaked completely.

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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)

Opener

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

Page 63

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-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

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-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

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Removal Procedure For Cross Flow Fan

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,

Use a pin to press RESET button to reset the remote control to

the original set by manufacture.

Bearing

Fan motor

AUTO HEAT

COOL

DRY

OFF

Fig 14

Fig 15

hr DELAY

OFF ON

OFF

SELECT

ERROR RESET

hr DELAY

SET/CANCEL

Reset Point

INVERTER

Fig 16

Page 65

12 Troubleshooting Guide

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

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

0.9~1.2(9~12) 12~16

2.3~2.9(23~29)

outdoor temperature: 35 (Cooling mode)

7 (Heating mode)

temperature

Measuring the air temperature difference

Normal

Outlet air

()

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

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12.2. Relationship between the condition of air conditioner and pressrue and electric current

Cooling mode

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

Carry on the measurements of pressure, electric current, and temperature fifteen minutes after an operation is started.

Low pressure

High pressure

Electric current

during operation

Low pressure

Heating mode

High pressure

Electric current

during operation

12.3. Diagnosis methods of a malfunction of a compressor .

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.

Page 67

13 Technical Data

Operating characteristics

CS-PE9DKD/CU-PE9DKD

Cooling characteristics

4.0

3.0

2.0

Q: Cooling capacity (kW)

230V

0.9

0.8

0.7

0.6

0.5

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

Heating characteristics

230V

3.4

O:Outlet Air temp( )

3.3

3.2

3.1

Q: Heating capacity (kW)

O:Outlet Air temp( )

3.0

2.9

2.8

2.7

3.8

3.6

3.4

3.2

I: current (A)

Outdoor temp( )

[Condition] Room temp: 27/19

Cooling operation:at high speed

Piping length:7.5m

CS-PE12DKD/CU-PE12DKD

Cooling characteristics

3.6

3.4

3.2

3.0

2.8

Q: Cooling capacity (kW)

I: current (A)

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

Piping length:7.5m

230V

Pressure (Mpa)

LP:Gas side piping

I: current (A)

3.9

3.8

3.7

3.6

Pressure (Mpa)

HP:Gas side piping

7891011 1 2

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

Piping length:7.5m

Heating characteristics

230V

4.4

4.2

4.0

3.8

O:Outlet Air temp( )

Q: Heating capacity (kW)

5.5

I: current (A)

5.3

5.1

4.9

4.7

567891011

Pressure (Mpa)

LP:Gas side piping

Pressure (Mpa)

HP:Gas side piping

Outdoor temp( )

[Condition] Room temp: 27/19

Heating operation:at high speed

Piping length:7.5m

Page 68

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

14 Exploded View

CS-PE9DKD CS-PE12DKD

INVERTER

Panasonic

AUT

HEA

COOL DRY

OFF

DELAY

OFF ON

DELAY

S E

LECT

S ET/CANC

ERRORRESET

Page 69

15 Replacement Parts List

CS-PE9DKD CS-PE12DKD

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

No. DESCRIPTION&NAME

CHASSIS COMPLETE

FAN MOTOR

CROSS FLOW FAN COMPLETE

EVAPORATOR

FIXING BOARD

DISCHARGE GRILLE COMPLETE

AIR SWING MOTOR

HORIZONTAL VANE(LEFT)

HORIZONTAL VANE(RIGHT)

VERTICAL VANE

C-BOX

CONTROL BOARD

14 HOLDER 1 CWD932493 CWD932493

15 TERMINAL BOARD COMPLETE 1 CWA28C2234 CWA28C2234

POWER SUPPLY CORD COMPLETE

17 ELECTRONIC CONTROLLER 1 CWA743824C CWA743824D

18 SENSOR 1 L2GZ00000003 L2GZ00000003

INDICATOR HOLDER-FRONT

INDICATOR HOLDER-BACK

INDICATOR PCB

CONTROL BOARD FRONT COVER

CONTROL BOARD TOP COVER

REMOTE CONTROL

FRONT GRILLE COMPLETE

FRONT GRILLE

GRILLE DOOR

AIR FILTER

SCREW-FRONT GRILLE

CAP-FRONT GRILLE

DRAIN HOSE

OPERATING INSTRUCTIONS

INSTALLATION INSTRUCTIONS

INSTALLATION PLATE

Q'TY CS-PE9DKD CS-PE12DKD RE

1 CWD50C1427 CWD50C1427

1 ARW41W8P30AC ARW41W8P30AC

1 CWH02C1036 CWH02C1036

1 CWB30C1558 CWB30C1558

1 CWD661043 CWD661043

1 CWE20C2436 CWE20C2409

1 CWA981091 CWA981091

1 CWE24C1104 CWE24C1104

1 CWE24C1105 CWE24C1105

1 CWE24C1100 CWE24C1100

1 CWH14C4628C CWH14C4628D

1 CWH102265 CWH102265

1 CWA20C2443 CW

1 CWD932491 CWD932491

1 CWD932492 CWD932492

1 CWA743836 CWA743836

1 CWH131235 CWH131235

1 CWH131237 CWH131237

1 CWA75C2683 CWA75C2683

1 CWE11C3214 CWE11C3214

1 CWE22K1259 CWE22K1259

CWE141073 CWE141073

2 CWD001144 CWD001144

2 XTT4+16CFJ XTT4+16CFJ

2 CWH521109 CWH521109

1 CWH851063 CWH851063

1 CWF564885 CWF564885

CWF612752 CWF612752

1 CWH361067 CWH361067

A20C2443

Note:

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

Page 70

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

16 Exploded View

CU-PE9DKD CU-PE12DKD

Page 71

17 Replacement Parts List

CU-PE9DKD CU-PE12DKD

CS-PE9DKD / CU-PE9DKD / CS-PE12DKD / CU-PE12DKD

No. DESCRIPTION&NAME Q'ty

BASE ASS'Y

HOLDER-FAN MOTOR

SCREW-F.M. HOLDER

FAN MOTOR

FIXING SCREW -FAN MOTOR

PROPELLER FAN

NUT-P.FAN

COMPRESSOR

MOUNT RUBBER(COMP.)

NUT-COMP.MOUNT

CONDENSER

HOLDER-COUPLING

4-WAY VALVE

2-WAY VALVE

3-WAY VALVE

16 FILTER 1 CWB101016 CWB101016

TERMINAL COVER

NUT-TERMINAL COVER

SOUND PROOF PANEL

22 REACTOR 1 CW A421050J CWA421060J

23 CONTROL BOX COMPLETE 1 CWH14C4648B CW H14C4659B

CONTROL BOARD

TERMINAL BOARD ASS'Y

26 CONTROL BOARD 1 CWH102248 CWH102248

CONTROL BOARD COVER

28 RADIATOR 1 CWA581085 CWA581085

29 ELECTRONIC CONROLLER 1 CWA743776B CWA743821B

TUBE ASS'Y(CAPILLARY)

CAPILLARY

SENSOR(COMP.)

33 SENSOR(PIPNG) 1 CWA50C2282J CWA50C2282J

34 V-COIL COMPLTE 1 CWA43C2179J CWA43C2179J

SURFACE COVER

CABINET FRONT PLATE

CABINET SIDE PLATE(R)

CABINET SIDE PLATE(L)

CONTROL BOARD COVER

40 HANDLE 1

41 PROOF NET-CONDENSER 1

1 CWD50K2114A CWD50K2114A

1 CWD541020 CWD541020

2 CWH551060J CWH551060J

1 L6LAHAG00001 L6LAJAG00001

4 CWH55406J CWH55293J

1 CWH03K1010 CWH03K1010

1 CWH561036J CWH561036

1 CWB092256 CWB092256

3 CWH50077 CWH50077

3 CWH56000J CWH56000J

1 CWB32C1491 CWB32C1500

1 CWH351040 CWH351040

1 CWB001037J CWB001037J

1 CWB021241 CWB021241

1 CWB011261

1 CWH17006 CWH17006

1 7080300J 7080300J

1 CWH151088 CWH151083

1 CWG302269 CWG302269

1 CWG302281 CWG302281

1 CWH102283 CWH102283

1 CWA28K1121 CWA28K1121

1 CWH131214 CWH131214

1 CWT01C3431 CWT01C3433

1 CWB15386 CWB15416

1 CWE031055A CWE031055A

1 CWE06C1090 CWE06C1090

1 CWE041157A CWE041157A

1 CWE041118A CWE041118A

1 CWH13C1119 CWH13C1119

CU-PE9DKD CU-PE12DKD RE

CWB011261

CWA50C2209J CWA50C2209J

CWE161001 CWE161001

CWD041048A CWD041034A

Note:

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

Page 72

CS-PE9DKD/CU-PE9DKD/CS-PE12DKD/CU-PE12DKD

18 Diagram

CS/CU-PE9DKD CS/CU-PE12DKD

TerminalBoard

187 Terminal

AC 230V 50Hz

250 Teminal

CS-PE9DKD

CS-PE12DKD

Swing Motor

-72-

Page 73

ZD102 MA8082W

ZD106 MA8082W

IC103 MM1431

CS-PE9DKD/CU-PE9DKD/CS-PE12DKD/CU-PE12DKD

Electronic Controller (Indoor Main PCB)

Indoor Piping Temp Sensor (20k 3950)

Indoor Indication PCB

-73-

Page 74

CS-PE9DKD/CU-PE9DKD/CS-PE12DKD/CU-PE12DKD

rminal Board

Reactor

OutdoorPiping Sensor

CompressorTemp Sensor

-74-

Page 75

CN-HOT (NV2)

CS-PE9DKD/CU-PE9DKD/CS-PE12DKD/CU-PE12DKD

Outdoor Main PCB

Compressor

A743776 A743821

1 10V

0.047 25V

XH4

15.0K1%

NONE

ERJ3GEY0R00V

NONE

ERJ3GEY0R00V

NONE

1A5-E

NONE

J0HBJY000004

A67C5043

NONE

RJ1N432C

NONE

ERJ3GEY0R00V

K6B1AGA00123

NONE

CU-PE9DKD

CU-PE12DKD

CAUTION DIFFERENCEPOINT

POWER

EMC

-75-

Page 76

CS-PE9DKD/CU-PE9DKD/CS-PE12DKD/CU-PE12DKD

18.2 How to use electronic circuit diagram.

Before using the circuit diagram, read the following carefully. Voltage measurement Voltage has been measured with a digital tester when the indoor fan is set at high Fan Speed under the following conditions without setting the timer. Use them for servicing. Voltage indication is in red. Measurement point Indication for capacitor Type: Electrolytic Capacitor:

Ceramic capacitor:

Indication for resistance

K......K

M......M

W......Watt

Not indication......1/10 W

......Refer to the Form

Not indicated...NHG series aluminium electrolytic capacitor

FC......FC series aluminium electrolytic capacitor

T......Ta series aluminium electrolytic capacitor

Not indicated......KB series aluminium electrolytic capacitor

NB......NB series ceramic capacitor

JC...... JC

Key No

Key Name

OFF/ON

TEMP DOWN

TEMP UP

MODE

FAN SPEED

TIMER A

TIMER B

SWING

SELECT

SET/CANCEL

CHECK

ERROR RESET

-76-

Page 77

SEG1

LCD

SEG2

SEG3

SEG4

SEG5

SEG6

SEG7

SEG8

SEG9

SEG10

SEG11

SEG12

SEG13

SEG14

SEG15

CS-PE9DKD/CU-PE9DKD/CS-PE12DKD/CU-PE12DKD

J5 (Model)

OXCooling Only

Heat Pump

SEG16

A/B(J1)

-77-

Panasonic CSCU-PE9DKD, CSCU-PE12DKD Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual