Panasonic cs-eC9DKU service manual

Order No. MAC0502033C1

Air Conditioner

CS-C9DKU CU-C9DKU CS-C12DKU CU-C12DKU

CONTENTS

Page Page

1 Features 2

2 Functions

3 Product Specifications

3.1. CS-C9DKU CU-C9DKU

3.2. CS-C12DKU CU-C12DKU

4 Dimensions

4.1. Indoor Unit & Remote Control

4.2. Outdoor Unit

5 Refrigeration Cycle Diagram

6 Block Diagram

7 Wiring Diagram

8 Operation Details

8.1. Cooling Operation

8.2. Soft Dry Operation

8.3. Automatic Operation

8.4. Operation Control

8.5. Indoor Fan Speed Control 21

8.6. Outdoor Fan Speed Control

8.7. Vertical Airflow Direction Control

8.8. Horizontal Airflow Direction Control

8.9. Powerful Operation

8.10. Quiet Operation

8.11. Timer Control

8.12. Random Auto Restart Control

8.13. Remote Control Signal Receiving Sound

8.14. Economy Mode Operation

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

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

10.5. Indoor unit 37

10.6. Outdoor unit

11 2-way, 3-way Valve

11.1. Evacuation of Installation

11.2. Pumping down

11.3. Evacuation of Re-installation

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

11.5. Evacuation

11.6. Gas charging

12 Servicing Information

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

12.2. Indoor Electronic Controller Removal Procedures

12.3. Indoor Fan Motor and Cross Flow Fan Removal

Procedures

12.4. Auto OFF/ON Button

12.5. Remote Control Reset

1 Features

• High Efficiency

• Compact Design

• Wider range of horizontal discharge air.

• Air Filter with function to reduce dust and smoke.

13 Troubleshooting Guide 57

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

14 Technical Data

14.1. Thermostat characteristics

14.2. Operation characteristics

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

19.1. Indoor Unit

19.2. Remote Control

19.3. Print Pattern Indoor Unit Printed Circuit Board

• 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.

• Automatic air swing and manual adjusted by Remote

Control for vertical airflow.

• Long installation piping.

− CS/CU-C9DKU, long piping up to 33ft.

− CS/CU-C12DKU, long piping up to 49ft.

• Operation Improvement

− Quiet mode to provide quiet operation.

− Powerful mode to reach the desired room temperature

quickly.

− 24-hour timer setting.

• Serviceability Improvement

− Removable and washable Front Panel.

2 Functions

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

3 Product Specifications

3.1. CS-C9DKU CU-C9DKU

Unit Indoor unit Outdoor unit

Power Source (Phase, Voltage, Cycle) ø, V, Hz Single, 115, 60 Cooling Capacity kW (BTU/h) 2.58 (8,800) Moisture Removal l/h (Pint/h) 1.0 (2.1)

Airflow Method OUTLET

INTAKE

Air Volume Lo m3/min (cfm) 4.7 (164) - 4.7 (164) —

Me m3/min (cfm) 5.7 (202) - 5.7 (202) — Hi m3/min (cfm) 7.2 (250) - 7.2 (250) 33.8 (1,190 ) SHi m3/min (cfm) 7.8 (274) - 7.8 (274) —

Noise Level dB (A) High 36 - 36, Low 26 - 26 High 49

Power level dB High 49 - 39 High 62

Electrical Data Input Power W 790

Running Current A 7.2 EER W/W (BTU/hW) 3.27 (11.10) Starting Current A 42.0

Piping Connection Port (Flare piping)

Pipe Size (Flare piping)

Drain Hose

Power Cord Length m — —

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

Net Weight lb (kg) 20 (9.0) 64 (29) Compressor Description — Rotary (1 cylinder)

Fan Motor Description Cross-flow Fan Propeller Fan

Heat Exchanger Description Evaporator Condenser

Refrigerant Control Device — Capillary Tube Refrigeration Oil (cm3) — SUNISO 4GDID or ATMOS M60

Refrigerant (R-22) g (oz) — 680 (24.0)

Inner diame ter inch (mm) 20/32 (16) — Length inch (mm) 25-19/32 (650) —

Number of core-wire — —

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 — 600

Material ASG32K1 PP Resin Type Induction (4-poles) Induction (6-poles) Input W 60.61 85.8 Rated Output W 15 30 Fan Speed Low rpm 750 - 750 —

Medium rpm 920 - 920 — High rpm 1,160 - 1,160 845 SuperHigh rpm 1,250 - 1,250 —

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

FPI 21 16 Size (W × H × L) inch (mm) 24-1/32 ×12-13/32 × 1

inch inch

SIDE VIEW TOP VIEW

G ; Half Union 3/8”

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

L ; (liquid side) 1/4”

2×15 1×20

(610 × 315 × 25.4)

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

33-4/32 × 20-3/8 × 28/32

(841 × 508 × 22)

or ATMOS 56

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

Unit Indoor unit Outdoor unit

Thermostat Electrical — Protection Device — 2 Stage Overload Protector Capillary Tube Length inch (mm) — 26-18/32 (675)

Flow Rate l/min — 13.0 Inner Diameter inch (mm) — 20/32 (1.6)

Air Filter Material

Style Capacity Control Capillary Tube Compressor Capacitor µF, VAC — 35 µF, 370VAC Fan Motor Capacitor µF, VAC 5.0 µF, 230VAC 8.0 µF, 230VAC

P.P.

Honeycomb

—

Note:

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

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

3.2. CS-C12DKU CU-C12DKU

Unit Indoor unit Outdoor unit

Power Source (Phase, Voltage, Cycle) ø, V, Hz Single, 115, 60 Cooling Capacity kW (BTU/h) 3.60 (12,30 0) Moisture Removal l/h (Pint/h) 1.6 (3.4)

Airflow Method OUTLET

INTAKE

Air Volume Lo m3/min (cfm) 5.6 (199) - 5.6 (199) —

Me m3/min (cfm) 6.8 (238) - 6.8 (238) — Hi m3/min (cfm) 8.0 (280) - 8.0 (280) 31.1(1,100) SHi m3/min (cfm) 8.2 (289) - 8.2 (289) —

Noise Level dB (A) High 39 - 39, Low 29 - 29 High 49

Power level dB High 52 - 42 High 62

Electrical Data Input Power kW 1.16

Running Current A 10.3 EER W/W (BTU/hW) 3.10 (10.60) Starting Current A 57.0

Piping Connection Port (Flare piping)

Pipe Size (Flare piping)

Drain Hose

Power Cord Length m — —

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

Net Weight lb (kg) 20 (9.0) 73 (33) Compressor Description — Rotary (1 cylinder) rolling piston

Fan Motor Description Cross-flow Fan Propeller Fan

Heat Exchanger Description Evaporator Condenser

Refrigerant Control Device — Capillary Tube Refrigeration Oil (cm3) — ATMOS M60 or SUNISO 4GDID

Refrigerant (R-22) g (oz) — 760 (26.8) Thermostat Electrical — Protection Device — 2 Stage Overload Protector

Inner diame ter inch (mm) 20 / 32 (16) — Length inch (mm) 25-19/32 (650) —

Number of core-wire — —

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 — 850

Material ASG32K1 PP Resin Motor Type Induction (4-poles) Induction (6-poles)

Input W 60.61 66.0 - 75.0 Rated Output W 15 31 Fan Speed Low rpm 900 - 900 —

Medium rpm 1,080 - 1,080 —

High rpm 1,280 - 1,280 820 - 820

SuperHigh rpm 1,310 - 1,310 —

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

FPI 21 16 Size (W × H × L) inch (mm) 24-1/32 × 12-13/ 32 × 1

inch inch

SIDE VIEW TOP VIEW

G ; Half Union 1/2”

L ; Half Union 1/4” G ; (gas side) 1/2”

L ; (liquid side) 1/4”

2×15 2×24

(610 × 315 × 25.4)

G ; 3-way valve 1/2”

L ; 2-way valve 1/4”

G ; (gas side) 1/2”

L ; (liquid side) 1/4”

29-10/32;28-15/32 × 19-27/32 ×

744.2;723.5 × 504 × 25.4

or ATMOS M56

type

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

Unit Indoor unit Outdoor unit

Capillary Tube Length inch (mm) — 16-23/32 (425)

Flow Rate l/min — 18.0 Inner Diameter inch (mm) — 2/32 (1.7)

Air Filter Material

Style Capacity Control Capillary Tube Compressor Capacitor µF, VAC — 50 µF, 370VAC Fan Motor Capacitor µF, VAC 5.0 µF, 230VAC 8.0 µF, 230VAC

P.P.

Honeycomb

—

Note:

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

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

4 Dimensions

4.1. Indoor Unit & Remote Control

4.2. Outdoor Unit

CU-C9DKU

CU-C12DKU

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

5 Refrigeration Cycle Diagram

CS-C9DKU CU-C9DKU

CS-C12DKU CU-C12DKU

6 Block Diagram

CS-C9DKU CU-C9DKU

CS-C12DKU CU-C12DKU

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

7 Wiring Diagram

CS-C9DKU CU-C9DKU

CS-C12DKU CU-C12DKU

REMARKS

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

Power Supply Cord

Resistance of Indoor Fan Motor Windings

MODEL CS-C9DKU

CS-C12DKU

CONNECTION CWA921143

BLUE-YELLOW 82.4 Ω

YELLOW-RED 103.4 Ω

Note: Resistance at 68°F of ambient temperature.

Resistance of Outdoor Fan Motor Windings

MODEL CU-C9DKU

CONNECTION CWA951244

BLUE-YELLOW 61.2 Ω

YELLOW-RED 53.4 Ω

Note: Resistance at 78.8°F of ambient temperature.

CU-C12DKU

Resistance of Compressor Windings

MODEL CU-C9DKU CU-C12DKU

CONNECTION 2R135126A 2P19S126C-1A

C-R 0.938 Ω 0.613 Ω C-S 2.611 Ω 2.106 Ω

Note: Resistance at 77°F/68°F of ambient temperature.

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

8 Operation Details

8.1. 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 60.8°F

to 86°F.

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

8.1.1. Cooling Operation Time Diagram

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

8.2. 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.

8.2.1. Soft Dry Operation Time Diagram

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

8.3. Automatic Operation

• Automatic operation can be set using remote control.

• This operation starts to operate with indoor fan at SLo speed for 20 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.

• 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.

• The operation mode judging temperature and standard setting temperature can be increased by 3.6°F permanently, by open

the circuit of JX1 at indoor electronic controller.

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

8.4. Operation Control

8.4.1. 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.

8.4.2. 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.

8.4.3. 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.

8.4.4. 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.

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

8.4.5. Anti-Freezing Control

• If the temperature of the indoor heat exchanger falls below 35.6°F 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 50°F (Recovery).

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

8.4.6. 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 4.5°F 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.

8.4.7. Anti-Dew Formation Control

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

• When room temperature is constant (±1.8°F) the following condition occur for 30 minutes continuously, anti-dew formation will

activate:

- Indoor intake temperature is more than 75.2°F and less than 86°F.

- Remote Control setting temperature is less than 77°F

- Compressor is on.

- Cooling Operation Mode.

- Indoor fan motor operate at Low fan speed or QLo.

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

• Anti-Dew Formation is control by:-

• Increasing Air Flow Volume

1. Lo fan speed.

Lo fan speed is changed to Lo+ after 30 min to prevent dew formation.

2. QLo fan speed.

Dew formation may occur at QLo cool, therefore QLo cool is operated only 1hr 30min (1 hr QLo, 30 min QLo + 80 rpm). After that, it operates at QLo + 160 rpm (However Quiet LED remains on).

• Narrowing

1. Vertical Airflow Direction

During Anti-Dew condensation prevention, Airflow Direction Auto-control angle from 0° - 32° to 20° - 30° under cooling and Soft Dry operation mode.

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

During Anti-Dew condensation prevention, Airflow Direction Manual Control angle change from 10°, 15°, 20°, 26°, 32° to 22°, 24°, 26°, 28°, 30°.

8.5. Indoor Fan Speed Control

• Indoor Fan Speed can be set using remote control.

8.5.1. Fan Speed Rotation Chart

Speed Fan Speed (rpm)

CS-C9DKU CS-C12DKU

SHi 1250 1310

Hi 1160 1280

Me 920 1080 HLo 840 960 CLo 750 900

Lo- 750 850 SLo 710 820

SS Lo - - QSHi - -

QHi 1060 1180

QMe 820 980

QH Lo - -

QLo 650 800

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

8.5.2. 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 and Me.

− Deodorizing Control will be activated.

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

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

• 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.

8.5.3. 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.

8.6. 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.

8.7. Vertical Airflow Direction Control

8.7.1. Auto Control

• 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.

8.7.2. 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.

CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU

8.8. Horizontal Airflow Direction Control

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

8.9. Powerful Operation

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

• When Powerful operation is set, the setting temperature will be automatically decreased 5.4°F internally against the present

setting temperature (Lower temperature limit: 60.8°F).

• This operation automatically will be running under SHi Fan Speed (Cooling), Lo- Fan Speed (Soft Dry).

• 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.

• Powerful Mode will operate for 15 minutes only and operation will shift back to previous setting mode.

• Powerful operation stops when:-

- Powerful mode button is pressed again.

- Stopped by OFF/ON operation button.

- Timer OFF activates.

- Quiet mode button is pressed.

- Operation mode button is changed.

- Economy mode button is pressed.

+ 53 hidden pages

Panasonic cs-eC9DKU service manual

Specifications and Main Features

Frequently Asked Questions

User Manual