Panasonic CS-A7DKD, CS-A9DKD, CS-A12DKD, CU-A7DKD, CU-A9DKD Service Manual

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Order No. MAC0501023C3

Air Conditioner

CS-A7DKD CU-A7DKD CS-A9DKD CU-A9DKD CS-A12DKD CU-A12DKD

CONTENTS

Page Page

1 Features 2

2 Functions

2.1. Remote Control

2.2. Indoor Unit

2.3. Outdoor Unit

3 Product Specifications

3.1. CS-A7DKD CU-A7DKD

3.2. CS-A9DKD CU-A9DKD

3.3. CS-A12DKD CU-A12DKD

4 Dimensions

4.1. Indoor Unit & Remote Control 12

4.2. Outdoor Unit

5 Refrigeration Cycle Diagram

6 Block Diagram

7 Wiring Diagram

8 Operation Details

8.1. Heating Operation

8.2. Cooling Operation

8.3. Soft Dry Operation

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

8.4. Automatic Operation 22

8.5. Operation Control

8.6. Indoor Fan Speed Control

8.7. Outdoor Fan Speed Control

8.8. Vertical Airflow Direction Control

8.9. Horizontal Airflow Direction Control

8.10. Powerful Operation

8.11. Quiet Operation

8.12. Ionizer Operation

8.13. Timer Control

8.14. Random Auto Restart Control

8.15. Remote Control Signal Receiving Sound

9 Operating Instructions

10 Installation Instructions

10.1. Safety Precautions

10.2. Attached accessories

10.3. Select the best location

10.4. Indoor/Outdoor Unit Installation Diagram

10.5. Indoor unit

10.6. Outdoor unit

11 2-way, 3-way Valve

11.1. Air Purging of the Piping and Indoor Unit

12 Servicing Information

12.1. Distinction Of Lead Free (PbF) Printed Circuit Board

12.2. Indoor Electronic Controllers Removal Procedures

12.3. Indoor Fan Motor And Cross Flow Fan Removal

13 Troubleshooting Guide

14 Technical Data

15 Exploded View (Indoor Unit)

16 Replacement Parts List (Indoor Unit)

17 Exploded View (Outdoor Unit)

18 Replacement Parts List (Outdoor Unit)

19 Electronic Circuit Diagram

Procedures

12.4. Auto OFF/ON Button

12.5. Remote Control Reset

13.1. Refrigeration Cycle System

13.2. Relationship Between The Condition Of The Air

Conditioner And Pressure And Electric Current

13.3. Diagnosis Methods Of A Malfunction Of A Compressor

And 4-way Valve

14.1. Thermostat Characteristics

14.2. Operation Characteristics

15.1. CS-A7DKD CS-A9DKD CS-A12DKD

17.1. CU-A7DKD CU-A9DKD

17.2. CU-A12DKD

19.1. Indoor Unit & Outdoor Unit

19.2. Remote Control

19.3. Print Pattern Indoor Unit Printed Circuit Board

19.4. Print Pattern Indicator & Receiver Printed Circuit Board

1 Features

• High Efficiency

• Compact Design

• Wider range of horizontal discharge air.

• Air Filter with function to reduce dust and smoke.

• Automatic air swing and manual adjusted by Remote

Control for vertical airflow.

• Long installation piping.

− CS/CU-A7DK, CS/CU-A9DK, long piping up to 10

meter.

− CS/CU-A12DK, long piping up to 15 meter.

• Supersonic Air Purifying Device with SUPER alleru-

buster.

− Inactive various harmful airborne elements including

allergen, viruses and bacteria.

− Generated supersonic waves enhance the ability to

collect dust and dirt in the air.

• Quality Improvement

− Random auto restart after power failure for safety restart

operation.

− Gas leakage protection.

− Prevent Compressor reverse cycle.

− Inner protector to protect Compressor.

− Noise prevention during soft dry operation.

− Blue Coated Condenser for high resistance to corrosion.

• Operation Improvement

− Quiet mode to provide quiet operation.

− Powerful mode to reach the desired room temperature

quickly.

− Ionizer control for generating negative ion in discharge

air.

− 24-hour timer setting.

• Serviceability Improvement

− Removable and washable Front Panel.

2 Functions

2.1. Remote Control

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

2.2. Indoor Unit

AUTO

OFF / ON

Automatic Operation Button

• Press for < 5 second to operate Automatic operation mode. Used when the remote control cannot be used.

• Press for ≥ 5 second to operate Cooling

operation mode and compressor force to on (“beep” sound will heard). Used when test running or servicing.

• Within 20 second of Cooling operation, press continuously for 5 second to enter various setting mode. “beep, beep” sound will be heard. (Used to toggle remote control signal receiving sound or select remote control transmission code).

Operation Indication Lamps (LED)

•

POWER

(Green) ............. Lights up in operation,

blinks in Automatic Operation judging and Hot Start operation.

•

TIMER

(Orange) ............ Lights up in Timer

Setting.

•

QUIET

(Orange) ............. Lights up in Quiet

Operation.

•

POWERFUL

•

ION

•

SUPER ALLERU-BUSTER

(Orange) ...... Lights up in Powerful

Operation.

(Green) .................. Lights up in Ionizer

Operation.

(Blue) ... Lights up in operation.

Operation Mode

• Heating, Cooling, Soft Dry and Automatic

Operation.

Powerful Operation

• Reaches the desired room temperature quickly.

Random Auto Restart Control

• Unit will be restarted, when resume from power failure, at previous setting.

Indoor Fan Speed Control

• Manual control fan speed (High, Medium and Low).

• Automatic fan speed.

Airflow Direction Control

• Vertical airflow control can be adjusted automatically or manually by remote control.

• Horizontal airflow can be manually adjusted by hand.

Anti-Freezing Control

• To prevent indoor heat exchanger from freezing.

Starting Current Control

• To reduce the starting current.

Time Delay Safety Control

• Restarting is inhibited for appro. 3 minutes.

7 Minutes Time Save Control

• To reduce the built up humidity inside the room.

Anti-Dew Formation Control

• Anti-Dew Formation Control for indoor unit discharge area.

30 Minutes Time Save Control

• Heating operation only.

Timer Operation

• Delay OFF/ON Timer control.

Quiet Operation

• To provide quiet operation.

Ionizer Operation

• Generate and discharge negative ion.

Hot-Start Control

• To prevent cold air being discharge during Heating operation starts.

Anti Cold Draft Control

• To prevent the cold draft during Heating mode operation in thermo off condition.

2.3. Outdoor Unit

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

3 Product Specifications

3.1. CS-A7DKD CU-A7DKD

Unit Indoor Unit Outdoor Unit

Power Source (Phase, Voltage, Cycle) ø, V, Hz Single, 220 - 230, 50

Cooling Capacity kW (BTU/h) 2.00 - 2.00 (6,820 - 6,820)

Heating Capacity kW (BTU/h) 2.10 - 2.10 (7,160 - 7,160)

Moisture Removal l/h (Pint/h) 1.3 (2.7)

Airflow Method OUTLET

INTAKE

Air Volume Lo m3/min (cfm) Cooling; 5.8 (205) - 5.8 (205)

Me m3/min (cfm) Cooling; 6.8 (241) - 6.8 (241)

Hi m3/min (cfm) Cooling; 7.8 (280) - 7.8 (280)

SHi m3/min (cfm) Cooling; 9.1 (320) - 9.1 (320)

Noise Level dB (A) Cooling; High 33 - 33, Low 26 - 26

Power level dB Cooling; High 46 - 46

Electrical Data Input Power kW Cooling; 0.61 - 0.63

Running Current A Cooling; 2.9 - 2.8

EER W/W (BTU/hW) Cooling; 3.28 - 3.17 (11.2 - 10.8) COP - (BTU/hW) Heating; 4.2 - 4.0 (14.3 - 13.6) Starting Current A 12.4

Piping Connection Port (Flare piping)

Pipe Size (Flare piping)

Drain Hose

Power Cord Length m 1.9 —

Dimensions Height inch (mm) 11 - 1/32 (280) 20 - 3/32 (510)

Net Weight lb (kg) 20 (9.0) 53 (24) Compressor Description — Rotary (1 cylinder)

Inner diame ter mm 12 — Length mm 650 —

Number of core-wire 3 (1.5 mm2) —

Width inch (mm) 31 - 15/32 (799) 25 - 19/32 (650) Depth inch (mm) 7 - 7/32 (183) 9 - 1/16 (230)

Motor Type — Induction (2-poles) Rated Output W — 550

inch inch

Heating; 6.2 (219) - 6.2 (219)

Heating; 6.8 (241) - 6.8 (241)

Heating; 9.0 (320) - 9.0 (320)

Heating; High 36 - 36, Low 28 - 28

SIDE VIEW TOP VIEW

Cooling; 29.5 (1,040 ) - 30.0

Heating; —

Cooling; High 46 - 47 Heating; High 48 - 49

Heating; High 49 - 49

Heating; 0.50 - 0.525

Heating; 2.4 - 2.4

G ; Half Union 3/8”

L ; Half Union 1/4” G ; (gas side) 3/8”

L ; (liquid side) 1/4”

Cooling; High 61 - 62 Heating; High 64 - 65

G ; 3-way valve 3/8”

L ; 2-way valve 1/4”

G ; (gas side) 3/8”

L ; (liquid side) 1/4”

rolling piston type

—

(1,060)

—

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

Unit Indoor Unit Outdoor Unit

Fan Motor Description Cross-flow Fan Propeller Fan

Material AS + Glass Fiber 20% PP Resin Type Induction (4-poles) Induction (6-poles) Input W 60.5 - 66.0 66 - 74.8 Rated Output W 15 30 Fan Speed Low rpm Cooling; 780 - 780

Medium rpm Cooling; 920 - 920

High rpm Cooling; 1,050 - 1,050

SuperHigh rpm Cooling; 1,220 - 1,220

Heat Exchanger Description Evaporator Condenser

Tube material Copper Copper Fin material Aluminium (Pre Coat) Aluminium (Blue Coat) Fin Type Slit Fin Corrugated Fin Row / Stage (Plate fin configuration, forced draft)

FPI 21 17 Size (W × H × L) mm 610 × 315 × 25.4 585.7

Refrigerant Control Device — Capillary Tube Refrigeration Oil (cm3) — ATMOS M60 OR SUNISO 4GDID Refrigerant (R22) g (oz) — 690 (24.3) Thermostat — — Protection Device — Overload Protector Capillary Tube Length mm — Cooling; 330, Heating; 566

Flow Rate l/min — Cooling; 20.6, Heating; 9.5 Inner Diameter mm — Cooling; 1.7, Heating; 1.4

Air Filter Material

Style Capacity Control Capillary Tube Compressor Capacitor µF, VAC — 20 µF, 370VAC Fan Motor Capacitor µF, VAC 1.5 µF, 440VAC 2.0 µF, 440VAC

Heating; 840 - 840

Heating; 920 - 920

Heating; 1,220 - 1,220

Heating; —

2×15 2×23

557.1

P.P.

Honeycomb

—

800 - 830

—

× 484 × 36.4

—

Note:

• Specifications are subjected to change without prior notice for further improvement.

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

3.2. CS-A9DKD CU-A9DKD

Unit Indoor Unit Outdoor Unit

Power Source (Phase, Voltage, Cycle) ø, V, Hz Single, 220 - 230, 50

Cooling Capacity kW (BTU/h) 2.65 -2.65 (9,040 - 9,040)

Heating Capacity kW (BTU/h) 2.80 - 2.85 (9,550 - 9,720)

Moisture Removal l/h (Pint/h) 1.6 (3.4)

Airflow Method OUTLET

INTAKE

Air Volume Lo m3/min (cfm) Cooling; 5.8 (204) - 5.8 (204)

Me m3/min (cfm) Cooling; 7.1 (251) - 7.1 (251)

Hi m3/min (cfm) Cooling; 8.6 (300) - 8.6 (300)

SHi m3/min (cfm) Cooling; 9.4 (333) - 9.4 (333)

Noise Level dB (A) Cooling; High 36 - 36, Low 26 - 26

Power level dB Cooling; High 49 - 49

Electrical Data Input Power kW Cooling; 0.83 - 0.86

Running Current A Cooling; 3.9 - 3.9

EER W/W (BTU/hW) Cooling; 3.19 - 3.08 (10.9 - 10.5) COP - (BTU/hW) Heating; 4.00 - 3.85 (13.6 - 13.1) Starting Current A 18.0

Piping Connection Port (Flare piping)

Pipe Size (Flare piping)

Drain Hose

Power Cord Length m 1.9 —

Dimensions Height inch (mm) 11 - 1/32 (280) 20 - 3/32 (510)

Net Weight lb (kg) 20 (9.0) 60 (27) Compressor Description — Rotary (1 cylinder)

Inner diame ter mm 12 — Length mm 650 —

Number of core-wire 3 (1.5 mm2) —

Width inch (mm) 31 - 15/32 (799) 25 - 19/32 (650) Depth inch (mm) 7 - 7/32 (183) 9 - 1/16 (230)

Motor Type — Induction (2-poles) Rated Output W — 750

inch inch

Heating; 6.2 (220) - 6.2 (220)

Heating; 7.1 (251) - 7.1 (251)

Heating; 9.4 (330) - 9.4 (330)

Heating; High 38 - 38, Low 28 - 28

SIDE VIEW TOP VIEW

Cooling; 29.5 (1,040 ) - 30.0

Heating; —

Cooling; High 48 - 49 Heating; High 48 - 49

Heating; High 51 - 51

Heating; 0.70 - 0.74

Heating; 3.3 - 3.3

G ; Half Union 3/8”

L ; Half Union 1/4” G ; (gas side) 3/8”

L ; (liquid side) 1/4”

Cooling; High 63 - 64 Heating; High 64 - 65

G ; 3-way valve 3/8”

L ; 2-way valve 1/4”

G ; (gas side) 3/8”

L ; (liquid side) 1/4”

rolling piston type

—

(1,060)

—

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

Unit Indoor Unit Outdoor Unit

Fan Motor Description Cross-flow Fan Propeller Fan

Material AS + Glass Fiber 20% PP Resin

Type Induction (4-poles) Induction (6-poles)

Input W 60.5 - 66.0 66 - 74.8

Rated Output W 15 30

Fan Speed Low rpm Cooling; 780 - 780

Medium rpm Cooling; 960 - 960

High rpm Cooling; 1,160 - 1,160

SuperHigh rpm Cooling; 1,270 - 1,220

Heat Exchanger Description Evaporator Condenser

Tube material Copper Copper

Fin material Aluminium (Pre Coat) Aluminium (Blue Coat)

Fin Type Slit Fin Corrugated Fin

Row / Stage (Plate fin configuration, forced draft)

FPI 19 17

Size (W × H × L) mm 610 × 315 × 25.4 585.7

Refrigerant Control Device — Capillary Tube Refrigeration Oil (cm3) — ATMOS M60 OR SUNISO 4GDID Refrigerant (R22) g (oz) — 730 (25.8) Thermostat — — Protection Device — Overload Protector Capillary Tube Length mm — Cooling; 890, Heating; 890

Flow Rate l/min — Cooling; 9.5, Heating; 9.5

Inner Diameter mm — Cooling; 1.5, Heating; 1.5 Air Filter Material

Style Capacity Control Capillary Tube Compressor Capacitor µF, VAC — 30 µF, 370VAC Fan Motor Capacitor µF, VAC 1.5 µF, 440VAC 2.0 µF, 440VAC

Heating; 840 - 840

Heating; 960 - 960

Heating; 1,270 - 1,270

Heating; —

2×15 2×23

557.1

P.P.

Honeycomb

—

800 - 830

—

× 484 × 36.4

—

Note:

• Specifications are subjected to change without prior notice for further improvement.

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

3.3. CS-A12DKD CU-A12DKD

Unit Indoor Unit Outdoor Unit

Power Source (Phase, Voltage, Cycle) ø, V, Hz Single, 220 - 230, 50

Cooling Capacity kW (BTU/h) 3.52 - 3.54 (12,000 - 12,100)

Heating Capacity kW (BTU/h) 4.00 - 4.05 (13,650 - 13,810)

Moisture Removal l/h (Pint/h) 2.0 (4.2)

Airflow Method OUTLET

INTAKE

Air Volume Lo m3/min (cfm) Cooling; 6.7 (236) - 6.7 (236)

Me m3/min (cfm) Cooling; 8.3 (294) - 8.3 (294)

Hi m3/min (cfm) Cooling; 9.5 (340) - 9.5 (340)

SHi m3/min (cfm) Cooling; 9.7 (343) - 9.7 (343)

Noise Level dB (A) Cooling; High 39 - 39, Low 29 - 29

Power level dB Cooling; High 52 - 52

Electrical Data Input Power kW Cooling; 1.08 - 1.15

Running Current A Cooling; 5.1 - 5.1

EER W/W (BTU/hW) Cooling; 3.26 - 3.16 (11.1 - 10.8) COP W/W (BTU/hW) Heating; 3.67 - 3.62 (12.5 - 12.3) Starting Current A 27.0

Piping Connection Port (Flare piping)

Pipe Size (Flare piping)

Drain Hose

Power Cord Length m 1.9 —

Dimensions Height inch (mm) 11 - 1/32 (280) 21 - 1/4 (540)

Net Weight lb (kg) 20 (9.0) 82 (37) Compressor Description — Rotary (1 cylinder) rolling piston

Inner diame ter mm 12 — Length mm 650 —

Number of core-wire 3 (1.5 mm2) —

Width inch (mm) 31 - 15/32 (799) 30 - 23/32 (780) Depth inch (mm) 7 - 7/32 (183) 11 - 3/8 (289)

Motor Type — Induction (2-poles) Rated Output W — 950

inch inch

Heating; 7.1 (251) - 7.1 (251)

Heating; 8.3 (293) - 8.3 (293)

Heating; 9.7 (340) - 9.7 (340)

Heating; High 40 - 40, Low 29 - 29

SIDE VIEW TOP VIEW

Cooling; 32.5 (1,150 ) - 33.5

Heating; —

Cooling; High 48 - 49 Heating; High 48 - 49

Heating; High 53 - 53

Heating; 1.09 - 1.12

Heating; 5.2 - 5.1

G ; Half Union 1/2” L ; Half Union 1/4”

G ; (gas side) 1/2”

L ; (liquid side) 1/4”

Cooling; High 63 - 64 Heating; High 64 - 65

G ; 3-way valve 1/2”

L ; 2-way valve 1/4”

G ; (gas side) 1/2”

L ; (liquid side) 1/4”

—

(1,180)

—

type

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

Unit Indoor Unit Outdoor Unit

Fan Motor Description Cross-flow Fan Propeller Fan

Material AS + Glass Fiber 20% PP Resin

Motor Type Induction (4-poles) Induction (6-poles)

Input W 60.5 - 66.0 71.5 - 80.3 Rated Output W 15 31 Fan Speed Low rpm Cooling; 900 - 900

Medium rpm Cooling; 1,120 - 1,120

High rpm Cooling; 1,280 - 1,280

SuperHigh rpm Cooling; 1,310 - 1,310

Heat Exchanger Description Evaporator Condenser

Tube material Copper Copper Fin material Aluminium (Pre Coat) Aluminium (Blue Coat) Fin Type Slit Fin Corrugated Fin Row / Stage (Plate fin configuration, forced draft)

FPI 21 16 Size (W × H × L) mm 610 × 315 × 25.4 720 × 504 × 36.38

Refrigerant Control Device — Capillary Tube Refrigeration Oil (cm3) — ATMOS M0 OR SUNISO 4GDID Refrigerant (R-22) g (oz) — 1,080 (38.1) Thermostat — — Protection Device — — Capillary Tube Length mm — Cooling; 630, Heating; 455

Flow Rate l/min — Cooling; 6.5, Heating; 13.6 Inner Diameter mm — Cooling; 1.2 Heating; 1.5

Air Filter Material

Style

Capacity Control Capillary Tube Compressor Capacitor µF, VAC — 35 µF, 370VAC Fan Motor Capacitor µF, VAC 1.5 µF, 440VAC 2.0 µF, 440VAC

Heating; 960 - 960

Heating; 1,120 - 1,120

Heating;1,310 - 1,310

Heating; —

2×15 2×24

P.P.

Honeycomb

—

845 - 860

—

Note:

• Specifications are subjected to change without prior notice for further improvement.

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

4 Dimensions

4.1. Indoor Unit & Remote Control

4.2. Outdoor Unit

4.2.1. CU-A7DKD / CU-A9DKD

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

4.2.2. CU-A12DKD

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

5 Refrigeration Cycle Diagram

6 Block Diagram

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

7 Wiring Diagram

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

8 Operation Details

8.1. Heating Operation

• Heating operation can be set using remote control.

• This operation is applied to warm the room temperature reaches the setting temperature set on the remote control.

• The remote control setting temperature, which takes the reading of intake air temperature sensor, can be adjusted from 16°C

to 30°C.

• During heating operation, the compressor will stop running and restart as shown in below figure.

8.1.1. Heating Operation Time Diagram

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

8.2. Cooling Operation

• Cooling operation can be set using remote control.

• This operation is applied to cool down the room temperature reaches the setting temperature set on the remote control.

• The remote control setting temperature, which takes the reading of intake air temperature sensor, can be adjusted from 16°C

to 30°C.

• During cooling operation, the compressor will stop running and restart as shown in below figure.

8.2.1. Cooling Operation Time Diagram

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

8.3. Soft Dry Operation

• Soft Dry operation can be set using remote control.

• Soft Dry operation is applied to dehumidify and to perform a gentle cooling to the room.

• This operation starts when the intake air temperature sensor reaches the setting temperature on the remote control.

• When operation begins, Soft Dry will be switched “ON” for a maximum 10 minutes, then Soft Dry operation will be turned “OFF”

for a minimum 6 minutes. After that, the Soft Dry operation will be “ON” and “OFF” based on the setting temperature as shown in below figure.

• However after 3 minutes of compressor off, during Soft Dry “OFF” (within 6 minutes Soft Dry restart control), the indoor unit will

start to operate at normal Cooling mode if the intake temperature is higher than Cooling “ON” point.

8.3.1. Soft Dry Operation Time Diagram

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

8.4. Automatic Operation

• Automatic operation can be set using remote control.

• This operation starts to operate with indoor fan at SLo speed for 25 seconds to judge the intake air temperature.

• After judged the temperature, the operation mode is determined by referring to the below standard.

• Then, the unit start to operate at determined operation mode, until it is switched off using remote control, with the setting

temperature as shown in below table.

• Operation mode will be determine again for judgement after 1 hour of operation, if the room temperature reaches to set

temperature and compressor off time is over 7 minutes 30 seconds continuously.

The present operation mode will be continued, if the room temperature does not reach to set temperature (Compressor keeps running) eventhough after 1 hour from automatic operation mode started.

Present Judgement Next Mode

Mode Cooling Soft Dry Heating

O O

Cooling 23°C Cooling (Judgement: Not Applicable (Judgement:

Heating 23°C & Above) Below 23°C)

O O

Soft Dry 20°C Soft Dry Not Applicable (Judgement: (Judgement:

Heating 20°C & Above) Below 20°C)

O O

Heating Cooling (Judgement: Not Applicable (Judgement:

25°C Heating Above 25°C) 25°C & below)

Automatic Set Temperature Refer as below.

• Automatic Set Temperature

For each operation, set temperature will automatically set as shown below.

However it can be selected 2°C higher or 2°C lower from standard set temperature by pressing the “Room Temperature Setting button”.

Operation Hi (Standard) Lo

(+2°C) (±0°C) (-2°C)

Cooling 27°C 25°C 23°C

Soft Dry 24°C 22°C 20°C

Heating 23°C 21°C 19°C

• The setting temperature for all the operations can be changed one level up or one level down from the standard temperature

as shown in below table by pressing on the temperature up or temperature down button at remote control.

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

• The operation mode judging temperature and standard setting temperature can be increased by 2°C permanently, by open the

circuit of JX1 at indoor electronic controller.

8.5. Operation Control

8.5.1. Restart Control (Time Delay Safety Control)

• When the thermo-off temperature (temperature which compressor stops to operate) is reached during:-

− Cooling/Heating operation - the compressor stops for 3 minutes (minimum) before resume operation.

− Soft Dry operation - the compressor stops for 6 minutes (minimum) before resume operation.

• If the operation is stopped by the remote control, the compressor will not turn on within 3 minutes from the moment operation

stop, although the unit is turn on again within the period.

• This phenomenon is to balance the pressure inside the refrigerant cycle.

8.5.2. Compressor Reverse Rotation Protection Control

• If the compressor is operating continuously for 5 minutes or longer and the temperature difference between intake air and

indoor heat exchanger is 2.5°C (cooling mode)/5°C (heating mode) or less for continuous 2 minutes, compressor will stop and restart automatically.

• Time Delay Safety Control is activated before the compressor restart.

s T = Intake air temperature - Indoor heat exchanger temperature

• This is to prevent compressor from rotate reversely when there is an instantaneous power failure.

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

(For 8.5.3. to 8.5.7. information applies only to Cooling and Soft Dry Operation)

8.5.3. 7 Minutes Time Save Control

• The compressor will start automatically if it has stopped for 7 minutes and the intake air temperature falls between the

compressor ON temperature (A) and compressor OFF temperature (B) during the period.

• This phenomenon is to reduce the built up humidity inside a room.

8.5.4. 60 Seconds Forced Operation

• Once the air conditioner is turned on, the compressor will not stop within 60 seconds in a normal operation although the intake

air temperature has reached the thermo-off temperature. However, force stop by pressing the OFF/ON operation button at the remote control is permitted.

• The reason for the compressor to force operate at minimum 60 seconds is to allow the refrigerant oil run in a full cycle and

return back to the outdoor unit.

8.5.5. Starting Current Control

• When the compressor, outdoor fan motor and indoor fan motor are simultaneously started, the indoor fan motor will start to

operate at 1.6 second later.

• The reason of the difference is to reduce the starting current flow.

8.5.6. Anti-Freezing Control

• If the temperature of the indoor heat exchanger falls below 2°C continuously for 4 minutes or more, the compressor turns off.

The fan speed setting remains the same.

• This phenomenon is to protect the indoor heat exchanger from freezing and to prevent higher volume of refrigerant in liquid form

returning to the compressor.

• Compressor will restart again when the indoor heat exchanger temperature rises to 10°C (Recovery).

• Restart control (Time Delay Safety Control) will be applied in this Control if the recovery time is too short.

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(For 8.5.8. to 8.5.14. information applies only to Heating Operation)

8.5.7. Anti-Dew Formation Control

• Purpose is to prevent dew formation on indoor unit air discharge area.

• When room temperature is constant (±1°C) the following conditions occur for 30 minutes continuously, anti-dew formation will

activate:

− Remote Control setting temperature is less than 25°C.

− Compressor is on.

− Cooling operation mode.

− Indoor Fan motor operate at Low fan speed (CLo, Lo- or QLo).

• This control is cancelled immediately when above condition is changed, or Powerful button is pressed.

• Anti-Dew formation is control by:

1. CLo fan is changed to HLo fan.

2. QLo fan is changed to HLo fan.

8.5.8. 30 Minutes Time Save Control

• The compressor will start automatically if it has stopped for 30 minutes and the intake air temperature falls between the

compressor OFF temperature (A) and compressor ON temperature (B) during the period.

• This is to maintain the room temperature as set. Despite of this, it is to prevent a wrong judgement of intake air temperature due

to poor installation near the sensor area.

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8.5.9. Compressor Overload Protection Control

Outdoor Fan Control

• If the temperature of the indoor heat exchanger rises to 51°C, outdoor fan stops. The outdoor fan restarts when the indoor

heat exchanger temperature falls to 49°C.

Compressor high pressure protection

• If the indoor heat exchanger becomes 65°C or more, the compressor will stop and restart automatically.

(Time Delay Safety Control - 4 minutes waiting).

• This is to reduce the pressure, as to reduce the indoor heat exchanger temp. Nevertheless, is to protect the compressor

from overload of too high temperature.

8.5.10. 4-Way Valve Control

• 4-way valve always on during Heating operation. (except deicing operation)

• When the unit is switched off by remote control during Heating operation, the 4-way valve stay at Heating position for 5 minutes.

• This is to prevent the refrigerant flow process sound for being occur.

8.5.11. Outdoor Fan Motor Control

• When compressor stops (reaches room temperature), outdoor fan will operate for 30 seconds (forced operation).

• This is to release the heat and to obtain the lowest pressure as fast as possible.

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8.5.12. Hot Start Control

• Hot Start Control is to prevent cool air discharge into the room when heating operation start.

• When Heating operation starts, Indoor fan will not start until the indoor heat exchanger reaches 30°C as diagram shown.

• Hot start is completed when indoor heat exchanger rises to 39°C or operation over 4 minutes.

8.5.13. Anti Cold Draft Control

• This operation is to prevent the Cold Draft during Heating mode operation.

• The operation will start when compressor OFF (Thermo OFF) during Heating operation.

• For the first 30 sec. from compressor OFF (Thermo OFF), Indoor fan speed will operate accordingly to the Indoor heat

exchanger temperature as shown below:

• After 30 sec. from compressor OFF (thermo OFF), Indoor fan will run at SSLo speed only.

• Anti Cold Draft Control will stop when:

− Intake temperature < set temperature. (Time Delay Safety Control 4 minutes waiting is valid)

− 30 Minutes Time Save Control activates.

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8.5.14. Deicing Control

Deice starts to prevent frosting at outdoor heat exchanger.

• Normal Deicing

Deice operations detection commences after 30 minutes of Heating operation starts or 60 minutes after previous deice operation. If the TRS (Thermal Reed Switch) senses the outdoor piping temperature drops to -3°C (TRS CLOSE) or less for 50 sec. continuously during compressor is in operation, deice will start.

(There is no detection during Outdoor Fan stops.)

• Overload Deicing

During heating operation, if the outdoor Fan OFF duration (due to overload control) is accumulated up to 60 minutes and after compressor starts for 1 minutes, deicing starts.

• Deicing ends when

1. 12 minutes after deicing operation starts;

2. TRS senses the outdoor piping temperature rises to 4°C (TRS OPEN).

Deicing will not end immediately as time delay (Td) is valid as shown below.

• Once deicing operation starts, it will not end for 60 seconds.

• After deicing operation, compressor stops for 30 seconds and 4-way valve stays at cooling position for 10 seconds.

Normal Deicing Time Diagram

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Overload Deicing Time Diagram

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8.6. Indoor Fan Speed Control

• Indoor Fan Speed can be set using remote control.

8.6.1. Fan Speed Rotation Chart

Fan Speed (rpm) CS-A7DKD CS-A9DKD CS-A12DKD

SHi 1220 1270 1310

Hi 1050 1160 1280

Me 920 960 1120 HLo 840 840 960 CLo 780 780 880

Lo- 750 750 850

SLo 700 700 750

SS Lo 300 300 300

QSHi 1120 1170 1210

QHi 950 1060 1180

QMe 820 860 1020

QHLo 770 770 890

QLo 680 680 780

8.6.2. Automatic Fan Speed Control

• When set to Auto Fan Speed, the fan speed is adjusted between maximum and minimum setting as shown in the table.

− Fan speed rotates in the range of Hi, Me and Lo-.

− Deodorizing Control will be activated.

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• Auto Fan Speed during cooling operation:

1. Indoor fan will rotate alternately between off and on as shown in below diagram.

2. At the beginning of each compressor start operation, indoor fan will increase fan speed gradually for deodorizing purpose.

3. For the first time the compressor operate, indoor fan will be switched to Hi fan speed from Lo- after 70 seconds from the start of compressor. This cause the room temperature to achieve the setting temperature quickly.

4. During compressor stop, indoor fan will operate at Lo- for the beginning 20 seconds to prevent higher volume of refrigerant in liquid form returning to the compressor.

5. After the compressor at turn off condition for 3 minutes, indoor fan will start to operate at Lo- to circulate the air in the room. This is to obtain the actual reading of the intake air temperature.

6. When the compressor resume operation, indoor fan will operate at Me fan speed (after 70 seconds from the restart of compressor) to provide comfort and lesser noise environment.

• Auto Fan Speed during Soft Dry operation:

1. Indoor fan will rotate alternately between off and Lo-.

2. At the beginning of each compressor start operation, indoor fan will increase fan speed gradually for deodorizing purpose.

3. When compressor at turn off condition for 6 minutes, indoor fan will start fan speed at Lo- to circulate the air in the room. This is to obtain the actual reading of intake air temperature.

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• Auto Fan Speed during Heating operation.

1. Indoor fan will rotate in the range of SLo → Me according to the heat exchanger temperature.

8.6.3. Manual Fan Speed Control

• Manual fan speed adjustment can be carried out by using the Fan Speed selection button at the remote control.

• There are 3 types of fan speed settings: Lo, Me, Hi.

8.7. Outdoor Fan Speed Control

• There is only one speed for outdoor fan motor.

• When the air conditioner is turned on, the compressor and the outdoor fan will operate simultaneously.

• Likewise, both compressor and outdoor fan will stop at the same time if the unit is turned off.

8.8. Vertical Airflow Direction Control

8.8.1. Auto Control

(Cooling and Soft Dry Operation condition)

• When the vertical airflow direction is set to Auto using the

remote control, the louver swings up and down as shown in the diagram.

• When stop operation using the remote control, the

discharge vent is reset, and stop at the closing position.

• During Cooling operation or Soft Dry operation, indoor fan

motor may stop to rotate at certain periods. At that condition, the louver will stop swinging and rest at the upper limit.

• During Anti-dew condensation prevention, Airflow Direction

Auto-control angle change from 0°-32° to 20°-30° under Cooling and Soft Dry operation mode.

Cooling and Soft Dry Operation

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(Heating Operation condition)

• When the piping air temperature reaches 38°C, the

louver is changed from upper to lower limit. When the piping air temperature falls to 35°C, the louver is changed from lower to upper limit.

Heating Operation

8.8.2. Manual Control

• When the vertical airflow direction is set to Manual using the remote control, the automatic airflow is released and the airflow

direction louver move up and down in the range shown in the diagram.

• The louver can be adjusted by pressing the button to the desired louver position.

• When stop operation using the remote control, the discharge vent is reset, and stop at the closing position.

• During Anti-dew condensation prevention, Airflow Direction Manual control angle change from 10°, 15°, 20°, 26°, 32° to 22°,

24°, 26°, 28°, 30° under Cooling and Soft Dry operation mode.

Cooling and Soft Dry Operation

Heating Operation

8.9. Horizontal Airflow Direction Control

• The horizontal airflow direction louvers can be adjusted manually by hand.

8.10. Powerful Operation

• The Powerful operation is to achieve the setting temperature quickly.

(Cooling and Soft Dry Operation condition)

• When Powerful operation is set, the setting temperature will be automatically decreased 3°C internally against the present

setting temperature (Lower temperature limit: 16°C).

• This operation automatically will be running under SHi Fan Speed (Cooling).

• Vertical Airflow Direction:-

- In “Manual” setting, the vane will automatically shift down 10° lower than previous.

- In “Auto” setting, the vane will automatically swing up and down. However the lower limit will be shifted 10° downward.

(Heating Operation condition)

• When Powerful operation is set, the setting temperature will be automatically increased 3°C against the present setting

temperature (Higher temperature: 30°C).

• The Fan Speed will shift as shown below:

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• Vertical Airflow Direction:-

− In “Manual” setting, the vane will automatically shift down 5° lower than previous setting.

− In “Auto” setting, the vane will automatically shift between upper and lower limit depending on the intake air temperature

as Heating Mode, Airflow Direction Auto-Control. However the upper and lower limit will be shifted 5° downward.

• Powerful operation stops when:-

− Powerful operation has operate for 15 minutes.

− Powerful button is pressed again.

− Quiet button is pressed.

− Stopped by OFF/ON operation button.

− Timer OFF activates.

− Operating mode is changed.

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8.11. Quiet Operation

• The Quiet operation is to provide quiet cooling/heating operation condition compare to normal operation.

(Cooling and Soft Dry Operation condition)

• Once the Quiet Mode is set at the remote control, Quiet Mode LED illuminates. The sound level will reduce either around

2 dB(A) for Lo fan speed or 3 dB(A) for Hi/Me fan speed against the present sound level operation.

• Dew formation become severe at Quiet Lo cool, therefore Quiet Lo cool is operated only 1hr 30 min (1hr QLo, 30 min QLo

+ 80 rpm). After that, it goes back to QLo+160 (However Quiet LED remains on).

• Manual Fan Speed:-

− RPM control during Lo cool

− RPM control during Hi & Me cool

• Auto Fan Speed:-

− Cooling operation

− Soft Dry operation

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(Heating Operation condition)

• When the Quiet Mode is set at the remote control, Quiet Mode LED illuminates. The sound level will reduce either around

2 dB (Lo) or 3 dB (Hi, Me), against the present sound level operation.

• Quiet setting of fan speed rpm refer to Indoor Fan Speed Control.

• Manual Fan Speed:-

− Rpm control during Lo, Me & Hi Cool

• Auto Fan Speed:-

− Rpm control depends on the piping air temperature sensor of Indoor heat exchanger

• Quiet operation stops when:-

− Quiet button is pressed again.

− Powerful button is pressed.

− Stopped by OFF/ON operation button.

− Timer OFF activates.

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8.12. Ionizer Operation

• The Ionizer operation is to provide fresh air effect to user by producing minus ion in discharge air.

8.12.1. Operation Control

1. Ionizer individual operation

a. When air-conditioner unit is at “OFF” condition (standby) and ION operation button at the remote control is pressed, the

Ionizer and indoor fan operations will turn on. Only ION LED will illuminates. Power LED maintain off. (1 → 2)

b. Ionizer individual operation can be turned off by pressing the ION button again. (2 → 1)

c. Fan speed can be adjusted later by customer during this operation.

d. Vertical airflow direction can be adjusted using remote control during Ionizer individual operation.

e. During Ionizer individual operation, operated mode (Auto, Cool, Dry, Heat) can be activated by turning on the OFF/ON

operation button. (2 → 4)

f. If power failure occur during Ionizer individual operation, after power resume, Ionizer operation will be activated immediately.

g. When the Ionizer circuit feedback process error occur for 24 times (about 11hr 30 min.), Ionizer and Air Circulation

operations will turn off with ION LED blinks continuously.

(For details, please refer to Ionizer Error detection control)

2. Operation mode & Ionizer operation.

a. When air-conditioner unit is at “ON” condition and ION operation button at the remote control is pressed, the Ionizer

operation will turn on. ION & Power LED will illuminate. (3 → 4)

b. Ionizer operation stops when:

• ION operation button is press again.

• Stopped by OFF/ON operation button.

• Timer OFF activates.

• Ionizer circuit feedback signal shows error.

c. Ionizer operation status is not memorized when the air conditioner has been switched off. The air-conditioner will operate

without ionizer operation when it is turned on again. However, if power failure occurs during Ionizer operation together with Cooling operation, air-conditioner will start to operate at Cooling operation with Ionizer operation when the power is resumed.

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8.12.2. Error Detection Control

• The error detection control is to inform user that error occurs at ionizer system and repairing job will be needed.

• There are two types of error detection control:

a. When Ionizer is ON

− If ionizer feedback = Lo for 24 times within 11hr 30min, ION LED blinks continuously.

b. When ionizer is OFF

− If ionizer feedback = Hi, ION LED blinks continuously.

• During ionizer at breakdown condition, if ionizer feedback voltage = Lo (become normal), ION LED will stop blinking.

• The error detection control can be reset by:

i) Pressing the OFF/ON operation button to switch the operation OFF.

ii) Pressing the Auto Operation button to force the operation OFF.

iii) Setting the OFF Timer to stop the operation (Not applicable when ionizer is OFF).

8.13. Timer Control

• There are 2 types of timer, ON and OFF timer.

• Both ON and OFF timer can be set by pressing ON or OFF button respectively.

• By pressing ON/OFF operation button, ON Timer or OFF Timer will not be cancelled.

• To cancel the previous timer setting, press CANCEL button.

• To activate the previous timer setting, press SET button once again.

• If main power supply is switched off, the timer setting will be cancelled.

8.13.1. ON Timer

• When ON Timer is set by using the remote control, the unit will start to operate slightly before the set time, so that the room will

reach nearly to the set temperature by the set time.

• For Cooling and Soft Dry operation, the operation will start 15 minutes before the set time.

• For Heating operation, the operation will start 30 minutes before the set time.

• For Automatic operation, the indoor fan will operate at SLo speed for 25 seconds, 30 minutes before the set time to detect the

intake air temperature to determine the operation mode. The operation indication lamp will blink at this time.

8.13.2. OFF Timer

• When OFF Timer is set by using the remote control, the unit will stop operate according to the desired setting.

8.14. Random Auto Restart Control

• If there is a power failure during operation, the air conditioner will automatically restart after 3 to 4 minutes when the power is

resumed.

• It will start with previous operation mode and airflow direction.

• If there are more than one air conditioner unit in operation and power failure occur, restart time for each unit to operate will be

decided randomly using 4 parameters:- intake air temperature, setting temperature, fan speed and air swing louver position.

• This Random Auto Restart Control is not available when Timer is set.

• This control can be omitted by open the circuit of JX2. (Refer Circuit Diagram)

8.15. Remote Control Signal Receiving Sound

• Long beep sound will be heard when:-

− Stopping the air conditioner using OFF/ON operation button.

− Stopping the Quiet Mode.

− Stopping the Powerful Mode.

− Stopping the Ion Mode.

• Short beep sound will be heard for others setting.

9 Operating Instructions

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10 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

10.1. Safety Precautions

• Read the following “SAFETY PRECAUTIONS” carefully before installation.

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

for the model to be installed.

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

indication used is as below. Incorrect installation due to ignoring of the instruction will cause harm or damage, and the seriousness is classified by the following indications.

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

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

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

The items to be followed are classified by the symbols:

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

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

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

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

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

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

4. Install at a strong and firm location which is able to withstand the set’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 specifi ed cable (1.5 mm2) and connect tightly for indoor/outdoor connection. Conne ct 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, abnorm al high pressure in the refrigeration cycle, explosion and injury.

9. Do not damage or use unspecified power supply cord. Otherwise, it will cause fire or electrical shock.

10. Do not modify the length of the power supply cord or use of the extension cord, and do not share the single outlet with other electrical applian ces. Otherwise, it will cause fire or electrical shock.

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

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

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

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

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

1. Power supply connection to the receptacle using a power plug.

Use an approved 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 16A circuit breaker for the permanent

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

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

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

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

10.2. Attached accessories

Applicable piping kit

CZ-3F5, 7AEN (C7DK, C9DK, A7DK, A9DK, )

CZ-4F5,7, 10AN (C12DK, A12DK)

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10.4. Indoor/Outdoor Unit Installation Diagram

10.3. 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 2.3 m.

OUTDOOR UNIT

• If an awning is built over the unit to prevent direct

sunlight or rain, be careful that heat radiation from the condenser is not obstructed.

• There should not be any animal or plant which could be

affected by hot air discharged.

• Keep the spaces indicated by arrows from wall, ceiling,

fence or other obstacles.

• Do not place any obstacles which may cause a short

circuit of the discharged air.

• If piping length is over the common length, additional

refrigerant should be added as shown in the table.

• This illustration is for explanation purposes only.

The indoor unit will actually face a different way.

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10.5. Indoor unit

10.5.1. SELECT THE BEST LOCATION (Refer to “Select the best location” section)

10.5.2. HOW TO FIX INSTALLATION PLATE

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

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

1. Insert the piping sleeve to the hole.

2. Fix the bushing to the sleeve.

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

Caution

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

4. Finish by sealing the sleeve with putty or caulking

compound at the final stage.

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

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

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

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

For left side piping, piping connection for liquid should be about 15 mm from this line.

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 150 mm and 125 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.

10.5.4. INDOOR UNIT INSTALLATION

1. For the right rear piping

2. For the right and right bottom piping

3. For the embedded piping

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(This can be used for left rear piping & left bottom piping also.)

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10.5.5. 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 3 (C7DK, C9DK, C12DK) or 5 (A7DK, A9DK, A12DK) × 1.5 mm flexible cord, type designation 245 IEC 57 or heavier cord.

• Ensure the color of wires of outdoor unit and the

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

• Earth lead wire shall be longer than the other lead wires

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

INSTALLATION OF SUPER ALLERU-BUSTER FILTER

1. Open the front panel.

2. Remove the air filters.

3. Remove Supersonic air purifying device.

4. Open the Supersonic air purifying device frame.

5. Insert the super alleru-buster filter and close the Supersonic air purifying device frame as shown in illustration at below.

• Secure the cable onto the control board with the holder

(clamper).

HOW TO TAKE OUT FRONT GRILLE

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

1. Open the intake grille and remove the screw at the front of the front grille.

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

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

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

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

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10.6. Outdoor unit

10.6.1. SELECT THE BEST LOCATION (Refer to “Select the best location” section)

10.6.2. INSTALL THE OUTDOOR UNIT

AUTO SWITCH OPERATION

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

1. AUTO OPERATION MODE

The Auto operation will be activated immediately once the Auto Switch is pressed.

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

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

3. REMOTE CONTROLLER RECEIVING SOUND ON/OFF

The ON/OFF of Remote Controller receiving sound can be change over by the following steps:

a) Release the Auto Switch after Test Run operation is activated.

b) Then, within 20 sec. after (a), press Auto Switch for more than 5 sec..A “beep” “beep” sound will occur at the fifth sec., then release the Auto Switch.

c) Within 20 sec. after (b), press Auto Switch again. Everytime Auto Switch is pressed (within 20 sec. interval), remote controller receiving sound status will be reversed between ON and OFF.

Long “beep” sound indicates that remote controller receiving sound is OFF.

Short “beep” sound indicates that remote controller receiving sound is ON.

• After selecting the best location, start installation according

to Indoor/Outdoor Unit Installation Diagram.

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

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

10.6.3. CONNECTING THE PIPING

Connecting The Piping To Indoor Unit

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

Connect the piping

• Align the center of piping and sufficiently tighten the flare

nut with fingers.

• Further tighten the flare nut with torque wrench in specified

torque as stated in the table.

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

MODEL Piping size (Torque)

Gas Liquid

C7DK, C9DK, A7DK, A9DK 3/8” (42 N.m) 1/4” (18 N.m)

C12DK, A12DK 1/2” (55 N.m) 1/4” (18 N.m)

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.

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.

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

10.6.4. EVACUATION OF THE EQUIPMENT

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

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

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

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.

• Be sure to check for gas leakage.

CAUTION

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

• If the leak stops when the piping connections are tightened further, continue working from step 3.

• If the leak does not stop when the connections are retightened, repair the location of leak.

• Do not release refrigerant during piping work for installation and reinstallation. Take care of the liquid refrigerant, it may cause

frostbite.

10.6.5. CONNECT THE CABLE TO THE OUTDOOR UNIT

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

2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 3 (C7DK, C9DK, C12DK) or 5 (A7DK, A9DK, A12DK) × 1.5 mm

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.

flexible cord, type designation 245 IEC 57 or heavier cord.

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

10.6.6. 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.

DISPOSAL OF OUTDOOR UNIT DRAIN WATER

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

stand which is taller than 3cm.

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

0° C for 2 or 3 days in succession, it is recommended not to use a drain elbow, for the drain water freezes and the fan will not rotate.

CHECK THE DRAINAGE

• Open front panel and remove air filters.

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

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

• Ensure that water flows out from drain hose of the indoor

unit.

EVALUATION OF THE PERFORMANCE

• Operate the unit at cooling operation mode for fifteen

minutes or more.

• Measure the temperature of the intake and discharge air.

• Ensure the difference between the intake temperature and

the discharge is more than 8°C.

CHECK ITEMS

Is there any gas leakage at flare nut connections?

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

Is the connecting cable being fixed to terminal board firmly?

Is the connecting cable being clamped firmly?

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

Is the earth wire connection properly done?

Is the indoor unit properly hooked to the installation plate?

Is the power supply voltage complied with rated value?

Is there any abnormal sound?

Is the cooling operation normal?

Is the thermostat operation normal?

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

Is the remote control’s LCD operation normal?

Is the super alleru-buster filter installed?

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

11 2-way, 3-way Valve

2-way Valve (Liquid Side) 3-way Valve (Gas Side)

Works Shaft Position Shaft Position Service Port

Shipping Close Close Close

(With valve cap) (With valve cap) (With cap)

Evacuation Close Close Open

(Installation and (Counter-Clockwise) (Clockwise) (Push-pin)

Re-installation)

Operation Open Open Close

(With valve cap) (With valve cap) (With cap)

Pumping down Close Open Open

(Transferring) (Clockwise) (Counter-Clockwise) (Connected manifold

Evacuation Open Open Open

(Servicing) With vacuum pump

Gas charging Open Open Open

(Servicing) (With charging cylinder)

Pressure check Open

(Servicing) Open Open (Connected manifold

Gas releasing Open

(Servicing) Open Open (Connected manifold

gauge)

11.1. Air Purging of the Piping and Indoor Unit

11.1.1. Air purging (Installation)

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

Required tools: hexagonal wrench, adjustable wrench, torque wrenches, wrench to hold the joints and gas leak detector. The additional gas for air purging has been charged in the outdoor unit. However, if the flare connections have not been done correctly and there gas leaks, a gas cylinder and the charge set will be needed.

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

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

Procedure:

1. Recheck the piping connections.

2. Open the valve stem of the 2-way valve counter-

clockwise approximately 90°, wait 10 seconds, and then set it to closed position.

• Be sure to use a hexagonal wrench to operate the valve

stem.

3. Check for gas leakage.

6. Set the 3-way valve to the opened position.

7. Mount the valve stem nuts to the 2-way and 3-way

valves.

8. Check for gas leakage.

• At this time, especially check for gas leakage from the 2-

way and 3-way’s stem nuts, and from the service port cap.

• Check the flare connection for gas leakage.

4. Purge the air from the system

• Set the 2-way valve to the open position and remove the

cap from the 3-way valve’s service port.

• Using the hexagonal wrench to press the valve core pin,

discharge for three seconds and then wait for one minute. Repeat this three times.

5. Use torque wrench to tighten the service port cap to a

Caution

If gas leakage is discovered in step (3) above, take the following measures:

Tighten the piping connections. If the leaks stop, continue working from step (4).

If the gas leaks do not stop when the connections are retightened, repair the location of the leak, discharge all of the gas through the service port, and then recharge with the specified amount of gas from a gas cylinder.

torque of 1.8 kg.m. (18 N.m).

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

11.1.2. Pumping down (Re-installation)

Procedure:

1. Confirm that both the 2-way and 3-way valves are set to the opened position.

• Remove the valve stem caps and confirm that the valve

stems are in the opened position.

• Be sure to use a hexagonal wrench to operate the valve

stems.

2. Operate the unit for 10 to 15 minutes.

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

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

• Connect the charge hose with the push pin to the Gas

service port.

4. Air purging of the charge hose.

• Open the low-pressure valve on the charge set slightly

to purge air from the charge hose.

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

6. Operate the air conditioner at the cooling cycle and

stop it when the gauge indicates 1 kg/cm

G (0.1 MPa).

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

• Do this quickly so that the gauge ends up indicating 3 to

5 kg/cm

G (0.3 to 0.5 MPa).

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

way valve’s stem nuts and the service port caps.

• Use a torque wrench to tighten the service port cap to a

torque of 1.8 kg.m (18 N.m).

• Be sure to check for gas leakage.

11.1.3. Re-air purging (Re-installation)

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

Procedure:

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

the closed position.

2. Connect the charge set and a charging cylinder to the

service port of the 3-way valve.

• Leave the valve on the charging cylinder closed.

3. Air purging.

• Open the valves on the charging cylinder and the

charge set. Purge the air by loosening the flare nut on the 2-way valve approximately 45° for 3 seconds then closing it for 1 minute; repeat 3 times.

• After purging the air, use a torque wrench to tighten the

flare nut on the 2-way valve.

4. Check for gas leakage.

• Check the flare connections for gas leakage.

5. Discharge the refrigerant.

• Close the valve on the charging cylinder and discharge

the refrigerant until the gauge indicates 3 to 5 kg/cm

(0.3 to 0.5 MPa)

6. Disconnect the charge set and the charging cylinder,

and set the 2-way and 3-way valves to the open position.

• Be sure to use a hexagonal wrench to operate the valve

stems.

7. Mount the valve stem nuts and the service port cap.

• Be sure to use a torque wrench to tighten the service

port cap to a torque 1.8 kg.m (18 N.m).

• Be sure to check for gas leakage.

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

11.1.4. Balance refrigerant of the 2-way, 3-way valves

(Gas leakage)

Procedure:

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

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

• Leave the valve on the charge set closed.

• Connect the charge hose with the push pin to the

service port.

3. Open the valves (Low side) on the charge set and

discharge the refrigerant until the gauge indicates 0.5 to 1 kg/cm

G (0.05 to 0.1 MPa).

• If there is no air in the refrigeration cycle [ the pressure

when the air conditioner is not running is higher than 1

kg/cm

G (0.1 MPa) ], discharge the refrigerant until the

gauge indicates 0.5 to 1 kg/cm

G (0.05 to 0.1 MPa). If this is the case, it will not be necessary to apply a evacuation.

• Discharge the refrigerant gradually; if it is discharged

too suddenly, the refrigeration oil will be discharged.

11.1.5. Evacuation (Installation)

(No refrigerant in the refrigeration cycle)

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

Procedure:

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

hose.

2. Evacuation for approximately one hour.

• Confirm that the gauge needle has moved toward -0.1

MPa (-76 cmHg) [vacuum of 4 mmHg or less.]

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

the vacuum pump, and confirm that the gauge needle does not move (approximately 5 minutes after turning off the vacuum pump).

4. Disconnect the charge hose from the vacuum pump.

• Vacuum pump oil

If the vacuum pump oil becomes dirty or depleted, replenish as needed.

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

11.1.6. Gas charging

(After Evacuation)

Procedure:

1. Connect the charge hose to the charging cylinder.

• Connect the charge hose which you disconnected from

the vacuum pump to the valve at the bottom of the cylinder.

2. Purge the air from the charge hose.

• Open the valve at the bottom of the cylinder and press

the check valve on the charge set to purge the air (be careful of the liquid refrigerant).

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

the system with liquid refrigerant.

• If the system cannot be charged with the specified

amount of refrigerant, it can be charged with a little at a time (approximately 150 g each time) while operating the air conditioner in the cooling cycle; however, one time is not sufficient, wait approximately 1 minute and then repeat the procedure. (pumping down-pin)

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

4. Immediately disconnect the charge hose from the 3-

way valve’s service port.

• Stopping partway will allow the refrigerant to be

discharged.

• If the system has been charged with liquid refrigerant

while operating the air conditioner, turn off the air conditioner before disconnecting the hose.

5. Mount the valve stem caps and the service port cap.

• Use torque wrench to tighten the service port cap to a

torque of 18 N.m.

• Be sure to check for gas leakage.

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

12 Servicing Information

12.1. Distinction Of Lead Free (PbF) Printed Circuit Board

• Printed circuit boards (manufactured) using lead free solder will have a PbF stamp on the Printed Circuit board.

CAUTION

• Pb free solder has a higher melting point than standard solder; typically the melting point is 50 - 70°F (30 - 40°C) higher.

Please use a high temperature solder iron and set it to 700 ± 20°F (370 ± 10°C).

• Pb free solder will tend to splash when heated too high (about 1100°F/600°C).

• If you must use Pb solder, please completely remove all of the Pb free solder on the pin or solder area before applying Pb

solder. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder.

12.2. Indoor Electronic Controllers Removal Procedures

• Electronic controller and Display Complete unit can be seen

by following the below removal procedures.

Fig. 1

− Remove the 2 caps and 2 screws at the bottom of the

Front Grille. (Fig. 1)

Fig. 2

− Remove the Front Grille Complete. (Fig. 2)

Fig. 3

− Release the taps on top and on the right side of metal

plate cover. (Fig. 3)

− Then remove the metal plate cover. (Fig. 3)

− Remove the indicator complete screw, and then remove

the indicator complete. (Fig. 3)

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

Fig. 4

− To remove the electronic controller.

− Release CN-FM connectors. (Fig. 4)

− Release CN-Sonic connector. (Fig. 4)

− Press the hook to the right then take out the PCB. (Fig.

− Release Ry-Pwr connector (black and brown) and Ac-

Wht connector from the PCB. (Fig. 5)

Fig. 5

− Release CN-FB connector. (Fig. 4)

− Release CN-ION connector. (Fig. 4)

− Release CN-TH connector. (Fig. 4)

− Release CN-STM connector. (Fig. 4)

− Release CN-REC/DISP connector. (Fig. 4)

12.3. Indoor Fan Motor And Cross Flow Fan Removal Procedures

• Remove Control Board Cover

Fig. 6

− Remove the screw on the left of the unit. (Fig. 6)

− Pull the hook to the left and lift up the evaporator.

(Fig. 6)

− Pull down the Discharge Grille Complete. (Fig. 6)

Fig. 7

Fig. 8

− Remove indoor pipe sensor and air intake sensor from

the evaporator. (Fig. 7)

− Remove the earth wire from the evaporator. (Fig. 7)

− Release the generator complete wire (green and red).

(Fig. 8)

− Remove 2 screws on the right and 1 screw at the left

side of the control board. (Fig. 7)

− Press down the hook on the left side of control board.

(Fig. 7)

− Then pull out the Control Board Complete from the unit.

(Fig. 7)

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

Fig. 10

− Push up the evaporator and remove cross flow fan by

pulling both cross flow fan and fan motor. (Fig. 10)

Fig. 9

− Remove the cross flow fan bushing from the chassis.

(Fig. 9)

− Loosen the fan boss screw at the cross flow fan. (Fig. 9)

12.4. Auto OFF/ON Button

• The “Auto OFF/ON Button” (behind the front grille) is used to operate the air conditioner if remote control is misplaced or

mulfunctioning.

• Forced cooling operation is possible by pressing the “Auto OFF/ON Button” for more than 5s where “beep” sound is heard then

release the button.

• User able to select remote control transmission code and toggle remote control signal receiving sound under various setting

mode.

• To enter various setting mode:

− Press the “Auto OFF/ON Button” continuously for 5s (“beep” sound is heard) and release.

− Within 20s, press the “Auto OFF/ON Button” continuously for 5s again (2 “beep” sound is heard) and release.

− Various setting mode has limit up to 20s. Then return to normal operation.

12.4.1. Toggle Remote Control Signal Receiving Sound

• Under various setting mode, press the “Auto OFF/ON Button” to toggle the remote control sound.

− Short “beep”: Turn ON remote control signal receiving sound.

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

− Long “beep”: Turn OFF remote control signal receiving sound.

• After “Auto OFF/ON Button” is pressed, the 20s counter for various setting mode is restarted.

12.4.2. Select Remote Control Transmission Code

• There are 4 types of remote control transmission code could be selected and stored in EEPROM of indoor unit. The indoor unit

will only operate when received signal with same transmission code from remote control. This could prevent signal interference when there are 2 or more indoor unit installed nearby together.

• To change remote control transmission code, short or open jumpers at the remote control printed circuit board.

• Under various setting mode, after select the transmission code combination of remote control, press any button of remote

control to transmit a signal to indoor unit. The transmission code will be stored in EEPROM.

• After signal is received, the various setting mode is cancelled and return to normal operation.

12.5. Remote Control Reset

• When the batteries are inserted for the first time or the

batteries are replaced, you may notice the indications at remote control’s display screen blink continuously and not functionable. If this condition happens, try to reset the remote control by pushing the reset terminal with a pointing device.

• You may also do the reset to erase the setting at remote

control and restore back the default setting.

13 Troubleshooting Guide

13.1. 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 a compressor and a 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.

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

13.2. Relationship Between The Condition Of The Air Conditioner And Pressure And Electric Current

Cooling Mode Heating Mode

Condition of the air

conditoner Low Pressure High Pressure Electric current

during operation

Insufficient refrigerant (gas leakage)

Clogged capillary tube or Strainer

Short circuit in the indoor unit

Heat radiation deficiency of the outdoor unit

Low Pressure High Pressure Electric current

during operation

Inefficient compression

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

13.3. Diagnosis Methods Of A Malfunction Of A Compressor And 4-way Valve

Nature of fault Symptom

• Electric current during operation becomes approximately 20% lower than the normal value.

Insufficient compressing of a compressor

Locked compressor

• The discharge tube of the compressor becomes abnormally hot (normally 70 to 90°C).

• 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 is a humming sound.

Insufficient switches of the 4-way valve

• Electric current during operation becomes approximately 80% lower than the normal value.

• The temperature different between from the discharge tube to the 4-way valve and from

suction tube to the 4-way valve becomes almost zero.

14 Technical Data

14.1. Thermostat Characteristics

14.1.1. CS-A7DKD / CS-A9DKD / CS-A12DKD

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

14.2. Operation Characteristics

14.2.1. CS-A7DKD CU-A7DKD

14.2.2. CS-A9DKD CU-A9DKD

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

14.2.3. CS-A12DKD CU-A12DKD

15 Exploded View (Indoor Unit)

15.1. CS-A7DKD CS-A9DKD CS-A12DKD

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

Note:

The above exploded view is for the purpose of parts disassembly and replacement.

The non-numbered parts are not kept as standard service parts.

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

16 Replacement Parts List (Indoor Unit)

<Model: CS-A7DKD / CS-A9DKD / CS-A12DKD >

REF. NO. PART NAME & DESCRIPTION QTY. CS-A7DKD CS-A9DKD CS-A12DKD REMARKS

1 CHASSY COMPLETE 1 CWD50C1377 ← ← 2 FAN MOTOR 1 CWA921181 CWA921324 CWA921181 0 3 CROSS FLOW FAN COMPLETE 1 CWH02C1031 ← ← 4 BEARING ASS’Y 1 CWH64K007 ← ← 5 SCREW - CROSS FLOW FAN 1 CWH4580304 ← ←

6 EVAPORATOR 1 CWB30C1600 CWB30C1687 CWB30C1601 7 FLARE NUT 1 CWT25078(1/4”) ← ← 8 FLARE NUT 1 CWT25005 (3/8”)

9 INTAKE AIR SENSOR COMPLETE 1 CWH32143 ← ← 10 DISCHARGE GRILLE COMPLETE 1 CWE20C2366 ← ← 11 VERTICAL VANE 9 CWE241150 ← ← 12 CONNECTING BAR 1 CWE261066 ← ← 13 CONNECTING BAR 1 CWE261070 14 AIR SWING MOTOR 1 CWA98260 ← ← 0 15 LEAD WIRE - AIR SWING MOTOR 1 CWA67C3977 16 CAP - DRAIN TRAY 1 CWH521096 ← ←

17 HORIZONTAL VANE 1 CWE241173 18 BACK COVER CHASSIS 1 CWD932454 ← ←

19 CONTROL BOARD CASING 1 CWH102259 20 TERMINAL BOARD COMPLETE 1 CWA28C2074 ← CWA28C2071 0 21 POWER SUPPLY CORD 1 CWA20C2159

22 ELECTRONIC CONTROLLER - MAIN 1 CWA743557 CWA743508 CWA743558 0 23 SENSOR COMPLETE 1 CWA50C2122 24 CONTROL BOARD FRONT COVER 1 CWH131207 ← ← 25 INDICATOR COMPLETE 1 CWE39C1115 ← ← 0 26 INDICATOR HOLDER 1 CWD932429 ← ← 27 INDICATOR HOLDER 1 CWD932430 ← ←

28 CONTROL BOARD COVER COMPLETE 1 CWH13C1120 29 REMOTE CONTROL COMPLETE 1 CWA75C2604 ← ← 0

30 FRONT GRILLE COMPLETE 1 CWE11C3125 31 INTAKE GRILLE COMPLETE 1 CWE22C1154 32 GRILLE DOOR 1 CWE141073

33 AIR FILTER 2 CWD001144 34 SCREW - FRONT GRILLE 2 XTN4+16C 35 CAP - FRONT GRILLE 2 CWH521109

36 DRAIN HOSE 1 CWH851063 37 INSTALLATION PLATE 1 CWH361067 38 BAG COMPLETE - INSTALLATION SCREW 1 CWH82C067 ← ← 39 FULCRUM 1 CWH621046 ← ← 40 ELECTRONIC CONTROLLER - IONIZER 1 CWA743675 ← ← 0

41 CASING - IONIZER 1 CWD932464 42 CASING - IONIZER 1 CWD932431 ← ← 43 ION GENERATOR 1 CWH94C0001

44 SUPERSONIC AIR PURIFYING DEVICE 1 CWH91C1013 45 ELECTRONIC CONTROLLER - SUPERSONIC 1 CWA743874

46 SUPER ALLERU BUSTER FILTER 1 CWD00C1133 47 FRAME FR AIR FILTER SUPERSONIC 1 CWD011026 48 FRAME FR AIR FILTER SUPERSONIC 1 CWD011027

←

← ←

← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ←

← ←

← ← ← ← ← ← ← ← ← ← ← ←

CWT25007 (1/2”)

(Note)

• All parts are supplied from PHAAM, Malaysia (Vendor Code: 061).

• “O” marked parts are recommended to be kept in stock.

17 Exploded View (Outdoor Unit)

17.1. CU-A7DKD CU-A9DKD

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

Note:

The above exploded view is for the purpose of parts disassembly and replacement.

The non-numbered parts are not kept as standard service parts.

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

17.2. CU-A12DKD

Note:

The above exploded view is for the purpose of parts disassembly and replacement.

The non-numbered parts are not kept as standard service parts.

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

18 Replacement Parts List (Outdoor Unit)

<Model: CU-A7DKD / CU-A9DKD>

REF.

NO.

1 CHASSY ASS’Y 1 CWD50K2112 2 SOUND PROOF MATERIAL 1 CWG302255 ← 3 FAN MOTOR BRACKET 1 CWD541075 ← 4 SCREW - FAN MOTOR BRACKET 2 CWH551060 ← 5 FAN MOTOR 1 CWA951388 ← 0 6 SCREW - FAN MOTOR MOUNT 3 CWH55406 ←

7 PROPELLER FAN ASS’Y 1 CWH03K1020 8 NUT - PROPELLER FAN 1 CWH56053 ←

9 COMPRESSOR 1 2RS122D5BC02 2PS156D3BB02 0

10 ANTI - VIBRATION BUSHING 3 CWH50077 ← 0 11 NUT - COMPRESSOR MOUNT 3 CWH56000 12 CONDENSER 1 CWB32C1493 ← 13 4-WAY VALVE 1 CWB001012 14 STRAINER 1 CWB11025 15 HOLDER COUPLING 1 CWH351047 ← 16 2-WAY VALVE (LIQUID) 1 CWB021218 CWB021217 0

17 3-WAY VALVE (GAS) 1 CWB011258 CWB011257 0 18 FLARE NUT (1/4”) 1 CWT25078 19 FLARE NUT (3/8”) 1 CWT25005 ←

20 OVERLOAD PROTECTOR 1 CWA121050 CWA121091 0 21 HOLDER - O.L.P. 1 CWH7041200 ← 22 TERMINAL COVER 1 CWH171011 23 NUT - TERMINAL COVER 1 CWH7080300 ← 24 SOUND PROOF BOARD 1 CWH151074 25 CONTROL BOARD 1 - -

26 TERMINAL BOARD ASS’Y 1 CWA28K1021 27 CAPACITOR - COMPRESSOR 1 DS371206CPNA DS371306CPND 0

28 HOLDER CAPACITOR 1 CWH301038 CWH301035 29 CAPACITOR - FAN MOTOR 1 DS441205NPQA ← 0 30 CABINET SIDE PLATE (L) 1 CWE041110A ← 31 CABINET SIDE PLATE (R) 1 CWE04C1042 ← 32 CABINET FRONT PLATE 1 CWE06K1048 ← 33 WIRE NET 1 CWD041057A ←

34 CABINET TOP PLATE 1 CWE031041A 36 CONTROL BOARD COVER 1 CWH13C1099

37 L. TUBE 1 CWH5850080 38 TUBE ASSY (CHK VALVE, CAPILLARY) 1 CWT01C3216 39 CAPILLARY TUBE ASSY 1 - CWB15K1146

40 ELECTRO MAGNETIC SWITCH 1 CWA00059 41 ELECTROLYTIC CAPACITOR 1 CWA32C1003 42 TEMPERATURE RELAY 1 CWA14C1009

43 V-COIL COMPLETE 1 CWA43C2174 44 PACKING - L. TUBE 1 CWB81012 45 OPERATING INSTRUCTIONS 1 CWH564479 ← 46 INSTALLATION INSTRUCTIONS 1 CWF612620 ← 47 INSTALLATION INSTRUCTIONS 1 CWF612681 48 INSTALLATION INSTRUCTIONS 1 CWF612738 ←

PART NAME & DESCRIPTION QTY. CU-A7DKD CU-A9DKD REMARKS

←

← ←

←

← ← ←

← ← ← ← ←

←

(Note)

• All parts are supplied from PHAAM, Malaysia (Vendor Code: 061).

• “O” marked parts are recommended to be kept in stock.

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

<Model: CU-A12DKD>

REF. NO. PART NAME & DESCRIPTION QTY. CU-A12DKD REMARKS

1 CHASSY ASS’Y 1 CWD50K2074

2 SOUND PROOF MATERIAL 1 CWG302110 3 FAN MOTOR BRACKET 1 CWD541030 4 SCREW - FAN MOTOR BRACKET 2 CWH551059

5 FAN MOTOR 1 CWA951117 0 6 SCREW - FAN MOTOR MOUNT 3 CWH55406

7 PROPELLER FAN ASS’Y 1 CWH03K1006 8 NUT - PROPELLER FAN 1 CWH56053 9 COMPRESSOR 1 2KS206D5AF04 0

10 ANTI - VIBRATION BUSHING 3 CWH50055 0 11 NUT - COMPRESSOR MOUNT 3 CWH4582065 12 CONDENSER 1 CWB32C1266

13 4-WAY VALVE 1 CWB00003 14 STRAINER 1 CWB11025 15 HOLDER COUPLING ASS’Y 1 CWH351023

16 2-WAY VALVE (LIQUID) 1 CWB021117 0 17 3-WAY VALVE (GAS) 1 CWB011148 0

18 TERMINAL COVER 1 CWH171012 19 NUT - TERMINAL COVER 1 CWH7080300 20 SOUND PROOF BOARD 1 CWH151023

21 CONTROL BOARD 1 CWH102102 22 TERMINAL BOARD ASS’Y 1 CWA28C2170 0 23 CAPACITOR - COMPRESSOR 1 DS371356CPNA 0

24 HOLDER CAPACITOR 1 CWH30057 25 CAPACITOR - FAN MOTOR 1 DS441205NPQA 0

26 CABINET SIDE PLATE (L) 1 CWE041031A 27 CABINET SIDE PLATE (R) 1 CWE041037A 28 CABINET FRONT PLATE 1 CWE06K1034

29 WIRE NET 1 CWD04C1009 30 CABINET TOP PLATE 1 CWE031014A 31 PLATE - C.B. COVER 1 CWH131088

32 CONTROL BOARD COVER 1 CWH13C1065 33 V-COIL COMPLETE 1 CWA43C2054

34 ELECTRO MAGNETIC SWITCH 1 CWA00059 35 ELECTROLYTIC CAPACITOR 1 CWA32C067 36 ELECTRO MAGNETIC SWITCH 1 K6A2C7A00002 0

37 L. TUBE 1 CWH5850080 38 TUBE ASS’Y (CHECK VALVE/ CAPILLARY) 1 CWT01C2640 39 PACKING - L. TUBE 1 CWB81012

40 OPERATING INSTRUCTIONS 1 CWH564479 41 INSTALLATION INSTRUCTIONS 1 CWF612620

42 INSTALLATION INSTRUCTIONS 1 CWF612681 42 INSTALLATION INSTRUCTIONS 1 CWF612738

(Note)

• All parts are supplied from PHAAM, Malaysia (Vendor Code: 061).

• “O” marked parts are recommended to be kept in stock.

19 Electronic Circuit Diagram

C22

0.01µ

R58 10k

Auto SW

R59 1k

DISPLAY COMPLETE

SUPERSONIC COMPLETE

CN-DISP

TIMER/AIR SW(ORG) POWER(GRN)

QUIET(ORG)

POWERFUL(ORG)

SUPERSONIC(BLU)

C401 47µ

6.3V

BZ01

Q01 C143XKTX

R55

R12

C02

0.01µ

R88

5.1k

ELECTRONIC CONTROL UNIT

IC401

CN-HA

C23

0.01µ

R60 10k

C26 0.01µ

C25 0.01µ

C24 0.01µ

D404

D403

D401

D402

ION(GRN)

D405

D406

R401 47Ω

R07 10k

R56

C01

0.01µ

R31

R78 10k

C29

0.1µ

R601

R603

X601

IC601

R602

5.1k

C601

0.1µ

CN-SONIC

R11

JP5

SW01

R68

100Ω

R13 220Ω

R14 220Ω

R15

180Ω

R27 220Ω

R73

3.3kΩ

R17

220Ω

C27

0.01µ

C28

0.01µ

C35

0.01µ

Q09

19.1. Indoor Unit & Outdoor Unit

SCHEMATIC DIAGRAM 1/4

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

SCHEMATIC DIAGRAM 2/4

R06 24k

R75 1k

C39

R76 1k

R74 1k

R77 1k

C38

1000p

R10 10k

R18

R19

R20

R21

R22

R23

R24

R25

D12

D11

D10

D09

D08

D07

D06

D05

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49

P50

P51

P52

P53

P54

P55

P56

P57

Vss0

VDD0

P30

P31

P32

P33

P34

P35

P47

P45

P46

RY-PWR DRIVE SIGNAL

DISPLAY

AUTO RESTART

S030

S130

P36

P44

SCK30

P43

P23

P41

P42

INTAKE AIR TEMP

P25

P24

P40

STEPPING MOTOR DRIVE SIGNAL

BUZZER

IC01

PIPE TEMP

GROUND

VDD1

P67

AV55

P64

P65

P66

AUTO OPERATION TEST RUN REMOTE CONTROL SOUND

POWER CLOCK INPUT

REMOTE-CONTROL COMMAND INPUT

TIMER SHORTEN

AN15

AN16

AN17

2625242322212019

P75

RESET

POWER

AN14

30292827

P74

OSC

AN13

AN12

P72

P73

P71

TOD

P03

INTP2

INTP1

INTP0

Vss1

JP2

IC(VPP)

XT1

XT2

RESET

AVDD

AVref

AN10

AN11

IC05

B1HBGGF00013

CN-STM1

RY-PWR

R05 43Ω

1/2W

R04 43Ω

1/2W

B1HBGGF00013

12345

(ZH5)

12345

IC06

RY-HOT

R09 10k

JX2

Vcc

GND

R/B

IC02

C3EBDG000021

PIPE TEMP. SENSOR

C05

0.1µ 16V

C04

R30

0.1µ

20k

16V

(PH) (RED)

CN-TH

C08

R33

0.1µ

15k

16V

AIR TEMP. SENSOR (15k 3950)(20k 3950)

VERTICAL

SCHEMATIC DIAGRAM 3/4

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

Q02 C143XKTX

4.7k

Q03 C143XKTX

4.7k

JP3

C36

R38

10k

R32 150k

4.096 MHz (47pF X 2)

C18

0.1µ 16V

C10

0.1µ 16V

C15

0.01µ

R02 1k

SSR02

SSR01

R41

R49 1k

R43

R44

C16

0.01µ

X01

R50

100k

JP4

C37

R79

0.01µ

10k

JX1

R37 10k

TEST

R01 10k

R66 R48

T01

ZNR01

Q05 C2412KTX

R03 1.3k

R29

1.6k

R67

R26

DB01

R62

IC04

REGULATOR

C17 3300µ 35V

C07

0.1µ 16V

D13

R34 10k

R51 10k

Q06 C2412KTX

D16

R57 12k

D15

R47 12k

L01

125µH

CR03

SSR01

C19

0.047µ

C09C06

R53 10k

R54

6.2k

R61 10k

Q08

R64

6.2k

C14 470µ 25V

Z01

7.5V

R52

6.2k

IC03

REGULATOR

5V12V

C03

0.047µ

CR01

RY-HOT

SSR02

CR02

C21 10µ 50V

Q07

R63

6.2k

FUSE

T 2A L 250V

D14

R36

C12

0.1µ 16V

C31

0.01µ

C11 100µ 16V

CT01

C32

0.01µ

RY-PWR

AC-WHT

TEMPERATURE

FUSE

HOT

RED

BLU

R35

CN-FM

C-FM

FAN MOTOR

3 4

1.5µ

CN-FB

1 2 3

CN-ION

4 3 2 1

D01

TO OUTDOOR

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

SCHEMATIC DIAGRAM 4/4

CU-A7DKD / CU-A9DKD

TO INDOOR

CU-A12DKD

TO INDOOR

BL/B

TRS

BL/B

TRS

COIL REVERSING

VALV E

BL/B

COIL REVERSING

VALV E

BL/B

A7DK

ELECTROLYTIC

CAPACITOR

MAGNETIC RELAY

OVER LOAD

PROTECTOR

GR Y

ELECTROLYTIC

CAPACITOR

MAGNETIC RELAY

A9DK

MOTOR

COMPRESSOR

MOTOR

FAN

CAPACITOR

HIGH VOLTAGE IONIZER

CH1

4 3

VIN

GND

ERR

EH-4P

C2 C1

R13

COMPRESSOR

R15

Z02

R14

R102

CN2

R101

D101

D102

C101

-4.2k

R10

R12

CN3 GN

C3 R4

Z01

4.7k

10k

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

How to use electronic circuit diagram

TIMER TABLE

Test Mode

Name Time (When test point Remarks

Short-circuited)

Real Timer 1 hr. 1 min.

10 min. 10 sec.

1 min. 1 sec. Time Delay Safety Control 2 min. 58 sec. 0 sec. Forced Operation 60 sec. 0 sec. Time Save Control 7 min. 4.2 sec. Anti-Freezing 4 min. 0 sec. Auto Mode Judgement 25 sec. 0 sec. Soft Dry OFF 6 min. 36 sec.

ON 10 min. 60 sec. Soft Dry: 10 min. operation Cooling 40 sec. 4 sec.

Deodorizing Control

Soft Dry 40 sec. 4 sec.

Comp. Reverse Rotation Detection 5 min. 30 sec. Comp. ON 5 min. and above

Comp./ Fan Motor Delay Timer 1.6 sec. 0 sec. Powerful Mode Operation 15 min. 15 sec. Random Auto Restart Control 0 ~ 62 sec. 0 ~ 6.2 sec. TRS Recovery Detection 12 min. 72 sec.

Time Save Control (Heating) 30 min. 3 sec. 4 Way Valve Control (Delay) 5 min. 30 sec. Deice Operation Occurs 60 min. 6 sec. 60 min. after previous deice

Overload Deice Timer 1 min. 6 sec. Comp. ON continuously for 1 min. check Deice End 12 min. 72 sec. Max. Operation time

Deice Operation (Extend) 60 sec. 0 sec.

Hotstart Finish 30 sec. 0 sec.

70 sec. 7 sec. 20 sec. 2 sec.

180 sec. 18 sec.

360 sec. 36 sec.

2 min. 0 sec.

6 min. 36 sec.

3 min. 18 sec.

1 min. 6 sec.

4 min. 24 sec. Continuously 4 min. Comp. ON

50 sec. 0 sec. TRS ON continuously for 50 sec. check

30 sec. 3 sec. 30 sec. Comp. OFF after deice 10 sec. 1 sec. 4-Way Valve ON 10 sec. later after deice

120 sec. 0 sec. 180 sec. 0 sec.

19.2. Remote Control

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

19.3. Print Pattern Indoor Unit Printed Circuit Board

BOTTOM VIEW

TOP VIEW

CS-A7DKD CU-A7DKD / CS-A9DKD CU-A9DKD / CS-A12DKD CU-A12D KD /

19.4. Print Pattern Indicator & Receiver Printed Circuit Board

BOTTOM VIEW

TOP VIEW

[PHAAM] Printed in Malaysia

Panasonic CS-A7DKD, CS-A9DKD, CS-A12DKD, CU-A7DKD, CU-A9DKD Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual