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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
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8
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
© 2005 Panasonic HA Air-Conditioning (M) Sdn Bhd
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
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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
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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.
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• 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.
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2 Functions
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
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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
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
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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.
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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
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
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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.
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4 Dimensions
4.1. Indoor Unit & Remote Control
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4.2. Outdoor Unit
CU-C9DKU
CU-C12DKU
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
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5 Refrigeration Cycle Diagram
CS-C9DKU CU-C9DKU
CS-C12DKU CU-C12DKU
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6 Block Diagram
CS-C9DKU CU-C9DKU
CS-C12DKU CU-C12DKU
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
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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.
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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
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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
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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.
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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.
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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.
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• 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.
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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
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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.
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• 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.
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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.
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8.10. Quiet Operation
(For Cooling Operation or cooling region of Soft Dry Operation)
• The Quiet operation is to provide quiet/cooling operation condition compare to normal operation.
• Once the Quiet Mode is set at the remote control, the Quiet Mode LED illuminated. The sound level will reduce around 2 dB
for Lo fan speed or 3 dB for Hi/Me fan speed against the present operation sound level.
• 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 Lo cool (However Quiet LED remains on).
• Manual Airflow Direction:-
− RPM control during Lo cool
− RPM control during Hi cool
• Auto Airflow Direction:-
• Quiet operation stops when:-
− Quiet button is pressed again.
− Stopped by OFF/ON operation button.
− Timer OFF activates.
− Powerful button is pressed.
− Economy button is pressed.
− Operation mode button is changed.
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8.11. 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.
8.11.1. 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 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.
8.11.2. OFF Timer
• When OFF Timer is set by using the remote control, the unit will stop operate according to the desired setting.
8.12. 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)(Indoor PCB)
8.13. Remote Control Signal Receiving Sound
• Long beep sound will be heard when:-
− Stopping the air conditioner using ON/OFF switch.
− Stopping the Quiet Mode.
− Stopping the Powerful Mode.
• Short beep sound will be heard for others setting.
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8.14. Economy Mode Operation
• Purpose of this operation is to save or reduced electrical power consumption of the room air conditioner.
However consumer is advised to use Economy Mode operation after the room temperature reaches the desired temperature.
1. Cooling and Soft Dry Mode
• When the Economy Mode is set, the set temperature will be automatically increased 0.9°F against the present setting
temperature. This operation automatically will be running under SLo Fan speed.
• Vertical Airflow Direction:-
In “Manual” or “Auto” setting, the vane will automatically change to Auto Air Swing.
2. Economy Mode will stop if:
• Economy mode button is pressed again.
• Stopped by ON / OFF switch.
• Timer-off activates.
• Powerful mode button is pressed.
• Fan Speed control button is pressed.
• Operating mode is changed.
• Air Swing condition is changed.
• Quiet button is pressed ON.
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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
(ø2 3/4”)
4. Hexagonal wrench (5/32”) 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.
• 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 will cause harm or damage, and the seriousness is classified by the following
indications.
This indication shows the possibility of causing death or serious injury.
13.3 lbf.ft
31.0 lbf.ft
40.6 lbf.ft
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 white background denotes an item that is PROHIBITED.
• 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 defect ive, it will cause water leakage, electrical shock or fire.
2. Install according to this installation instruction strictly. If installation is defect ive, it will cause water leakage, electrical shock or fire.
3. Use the attached accessories parts and specified parts for installa tion. 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 UL listed or CSA approved AWG16 wire (or heavier wire) and connect tightly for indoor/outdo or connection. Connect tightly and
clamp the wire 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.
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1. The equipment must be earthed and installed with earth leakage current breaker. 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 an 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 of the room air conditioner to the mains.
Power supply point should be in easily accessible place for the power disconnection in case of emergency.
Power supply connection to a circuit breaker for the permanent connection. Use an approved 15A (CU-C9DK) and 25A (CU-C12DK) fuse
or circuit breaker for the permanent connection.
It must be a double pole switch with a minimum 1/8” contact gap.
3. Do not release refrigerant.
Do not release refrigerant during piping work for installa tion, reinstallation and during repairing a refrigeration parts. Take care of the
liquid refrigerant, it may cause frostbite.
4. Installation work.
Twp people may be required to carry out installation.
5. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.
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10.2. Attached accessories
Applicable piping kit
CZ-3F5, 7AEN (C9DK)
CZ-4F5,7, 10AN (C12DK)
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 7’6”.
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 rated 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
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
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 19/32” 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 wall must be able to withstand the weight of the unit.
The centre of installation plate should be at more than 1723/32”
at right and left of the wall.
From installation plate left edge to unit’s left side is 229/32”.
The distance from installation plate edge to ceiling should more
than 25/8”.
From installation plate right edge to unit’s right is 345/64”.
:
For left side piping, piping connection for liquid should be
about 19/32” from this line.
:
For left side piping, piping connection for gas should be
about 1198/256” from this line.
:
For left side piping, piping connecting cable should be
about 31127/256” 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 ø23/4” hole-core drill.
• Line according to 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 529/32” and 429/32” 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.
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10.5.4. INDOOR UNIT INSTALLATION
1. For the right rear piping
2. For the embedded piping
(This can be used for left rear piping & left bottom piping also.)
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2. Unscrew the conduit cover & fix the conduit connector to
conduit cover with lock nut, then secure it against chassis.
3. Connecting wire between indoor unit and outdoor unit
should bw UL listed or CSA approved 4 x AWG16 wire.
• 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.
10.5.5. INDOOR UNIT ELECTRICAL
WIRING
1. Remove the control board metal cover.
• Secure the cable onto the control board with the holder
(clamper).
INSTALLATION OF AIR PURIFYING FILTER
1. Open the front panel.
2. Remove the air filters.
3. Put air purifying filter (right) into place as shown in
illustration at below.
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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.
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.
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. 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.
• 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. (ø13/32”).
2. When installing at roof, please take into consideration
strong winds and earthquakes. Please fasten the
installation stand firmly with bolt or nails.
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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.
MODEL Piping size (Torque)
Gas Liquid
CS-C9DK 3/8” (31.0 lbf.ft) 1/4” (13.3 lbf.ft)
CS-C12DK 1/2” (40.6 lbf.ft) 1/4” (13.3 lbf.ft)
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
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.
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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 side of a charging set and the service port of the 3-way valve.
• Be sure to connect the end of the charging hose with the push pin to the service port.
2. Connect the center hose of the charging set to a vacuum pump with check valve, or vacuum pump and vacuum pump adaptor.
3. Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from O PSI to -14.5 PSI.
Then evacuate the air approximately ten minutes.
4. Close the Low side valve of the charging set and then 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 vacuum pump and from the service port of the 3-way valve.
6. Tighten the service port caps of the 3-way valve at a torque of 4.05 Pf 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 (5/32”).
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 PSI to -14.5 PSI, in step 3 above take the following measure:
• If the leak stops when the piping connections are tightened further, continue working from step 3.
• If the leak does not stop when the connections are retightened, repair the location of leak.
• Do not release refrigerant during piping work for installation and reinstallation. Take care of the liquid refrigerant, it may cause
frostbite.
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10.6.5. OUTDOOR UNIT ELECTRICAL
WIRING
1. Remove Top Panel.
2. Remove Control Board Cover (Metal & Resin).
3. Remove Plugs.
4. Fix the conduit connectors to the conduit holes with locknuts, then secure them against the side panel.
5. Connecting wire between indoor unit and outdoor unit
should be UL listed or CSA approved 4 × AWG16 wire.
6. Secure the wire onto the control board with the holder
(clamper).
7. Wire connection to the power supply (115V 60 Hz) through
circuit breaker.
• Connect the UL listed or CSA approved wires (AWG14)
to the terminal board, and connect the other end of the
wires to circuit breaker.
Note: Secure the wires onto the control board
with the holder (clamper).
8. After completing wiring connection, reattach the control
board cover and the top panel to the original position with
the screws.
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 thickness1/4” or above.
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 14.4°F.
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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 wiring being fixed to terminal board firmly?
Is the connecting wiring being clampe d 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 compliant with rated value?
Is there any abnormal sound?
Is the cooling operation normal?
Is the thermostat operation normal?
Is the remote control’s LCD operation normal?
Is the air purifying filter installed?
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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
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
(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 cylinde r)
Pressure check Open
(Servicing) Open Open (Connected manifold
Gas releasing Open
(Servicing) Open Open (Connected manifold
gauge)
gauge)
gauge)
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11.1. Evacuation of Installation
WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO
EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES
in the following procedure.
If air remain in the indoor unit and refrigeration pipes, it will
affect the compressor, reduce to cooling capacity, and could
lead to a malfunction.
Procedure:
1. Connect a charging hose with a push pin to the Low
side of a charging set and the service port of a 3-way
valve.
• Be sure to connect the end of the charging hose with the
push pin to the service port.
2. Connect the centre hose of the charging set to a
vacuum pump.
3. Turn on the power switch of the vacuum pump and
make sure that the needle in the gauge moves from 0
PSI (0 cmHg) to -14.5 PSI (-76 cmHg). Then evacuate the
air for 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.
BE SURE TO TAKE THIS PROCEDURE IN ORDER TO
AVOID 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 cap at a torque of 4.05 Ibf with
a torque wrench.
7. Remove the valve caps of the 2-way valve and the 3-
way valve. Position both of the valves to “open” using
a hexagonal wrench (6/32 inch).
8. Mount the valve caps onto the 2-way and 3-way valves.
• Be sure to check for gas leakage.
Caution
If gauge needle does not move from 0 cmHg to -76
cmHg in step (3) above, take the following measures:
If the leaks stop when the piping conne ctions are
tightened further, continue working from step (3).
If the leaks do not stop when the connections are
retightened, repair the location of the leak.
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11.2. Pumping down
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
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 closed position.
6. Operate the air conditioner at the cooling cycle and
stop it when the gauge indicates 0 PSI (0 kg/cm
2
G).
If the unit cannot be operated at the cooling condition
(weather is rather cool), short the Pumping Down pins
on the Main Control P.C.B.
(Simply press the pumping down button if it is
equipped.)
So that the unit can be operated.
7. Immediately set the 3-way valve to the closed position.
• Do this quickly so that the gauge ends up indicating 14.5
PSI (1 kg/cm
2
G) to 43.5 PSI (3 kg/cm2G).
8. Use refrigerant reclaiming equipment to collect
refrigerant from indoor unit and pipes.
9. Disconnect the charge set, and mount the 2-way and 3-
way valve’s stem caps and the service port caps.
• Use a torque wrench to tighten the service port cap to a
torque of 4.05 Ibf.
• Be sure to check for gas leakage.
10. Disconnect pipes from indoor unit and outdoor unit.
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11.3. Evacuation of Re-installation
WHEN REINSTALLING AN AIR CONDITIONER, BE SURE TO
EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES
in the following procedure.
If air remain in the indoor unit and refrigeration pipes, it will
affect the compressor, reduce to cooling capacity, and could
lead to a malfunction.
Procedure:
1. Connect a charging hose with a push pin to the Low
side of a charging set and the service port of the 3-way
valve.
• Be sure to connect the end of the charging hose with the
push pin to the service port.
2. Connect the centre hose of the charging set to a
vacuum pump.
3. Turn on the power switch of the vacuum pump and
make sure that the needle in the gauge moves from 0
PSI (0 cmHg) to -14.5 PSI (-76 cmHg). Then evacuate the
air for 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.
BE SURE TO TAKE THIS PROCEDURE IN ORDER TO
AVOID GAS LEAKAGE.
5. Disconnect the charging hose from the vacuum pump.
6. Charge the pipes and indoor unit with gas refrigerant
from 3-way valve service port, and then discharge the
refrigerant until low side (gas side) gauge needle
indicates 43.5 PSI (3 kg/cm
2
).
7. Tighten the service port cap at a torque of 18 N.m with
a torque wrench.
8. Remove the valve caps of the 2-way valve and the 3-
way valve. Position both of the valves to “open” using
a hexagonal wrench (6/32 inch).
9. Mount the valve caps onto the 2-way and 3-way valves.
• BE SURE TO USE REFRIGERANT RECLAIMING
EQUIPMENT WHILE DISCHARGING THE
REFRIGERANT.
• Purge the air from charge set’s centre hose.
• Be sure to check for gas leakage.
Caution
If gauge needle does not move from 0 PSI (0 cmHg) to
-14.5 PSI (-76 cmHg) in step (3) above, take the
following measures:
If the leaks stop when the piping connections are
tightened further, continue working from step 3.
If the leaks do not stop when the connections are
retightened, repair the location of the leak.
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11.4. Balance refrigerant of the 2-way, 3-way valves
(Lack of refrigerant in the refrigeration cycle)
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
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. Connect the charge set’s centre hose to refrigerant
reclaiming equipment.
• Purge the air from charge hose.
4. Open the valve (Low side) on the charge set and
discharge the refrigerant until the gauge indicates 7.25
PSI (0.5 kg/cm
2
G) to 14.5 PSI (1 kg/cm2G).
• If there is no air in the refrigeration cycle (the pressure
when the air conditioner is not running is higher than 0.1
PSI (1 kg/cm
gauge indicates 7.25 PSI (0.5 km/cm
2
kg/cm
G). If this is the case, it will not be necessary to
2
G), discharge the refrigerant until the
2
G) to 14.5 PSI (1
apply a evacuation.
• Discharge the refrigerant gradually; if it is discharged
too suddenly, the refrigeration oil will also be
discharged.
5. Turn on refrigerant reclaiming equipment.
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11.5. Evacuation
(No refrigerant in the refrigeration cycle)
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 -14.5
PSI (-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.
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11.6. Gas charging
(After Evacuation)
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
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 0.33 Ib each time) while operating
the air conditioner in the cooling cycle; however, one
time is not sufficient, wait approximately 1 minute and
then repeat the procedure. (pumping down-pin)
This is different from previous procedures. Because you are
charging with liquid refrigerant from the gas side, absolutely do
no attempt to charge with large amount of liquid refrigerant
while operating the air conditioner.
4. Immediately disconnect the charge hose from the 3-
way valve’s service port.
• Stopping 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 4.05 Ibf.
• Be sure to check for gas leakage.
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CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
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 pratical, be sure to heat the Pb free solder until it melts, before applying Pb solder.
12.2. Indoor Electronic Controller 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 hooks on top and on the left side of Control
Board Front Cover.(Fig.3)
− Then remove the Control Board Front Cover.(Fig.3)
− Remove the earth wire.(Fig.3)
− Release the screw on the left side of the Control Board
Front Cover Complete.(Fig.3)
− Then remove the Control Board Front Cover
Complete.(Fig.3)
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Fig. 4
− Remove the indicator complete screw, and then remove
the Indicator Complete.(Fig.4)
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
Fig. 6
− Press the hook to the right then take out the PCB (Fig.6)
− Remove Ry-Pwr connector (black and brown) from the
terminal board. (Fig.6)
− Remove AC-Wht connector from the PCB. (Fig.6)
Fig. 5
− To remove the electronic controller.
− Remove the particular piece (Fig.5).
− Release CN-FM connector (Fig.)
− Release CN-FB connector (Fig.5)
− Release CN-TH connector (Fig.5)
− Release CN-STM1 connector (Fig.5)
− Release CN-DISP connector (Fig.5)
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CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
12.3. Indoor Fan Motor and Cross Flow Fan Removal Procedures
• Remove Control Board cover
Fig. 7
− Remove the screw on the left side of the unit. (Fig.7)
− Pull the hook to the left and lift up the evaporator. (Fig.
7)
− Pull down the Discharge Grille Complete. (Fig.7)
Fig. 8
− Remove indoor pipe sensor and air intake sensor from
the evaporator. (Fig.8)
− Remove 2 screws on the right side of the control board.
(Fig.8)
− Press down the hook on the left side of control board.
(Fig.8)
− Then pull out the Control Board Complete from the unit.
(Fig.8)
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)
Fig. 10
− Push up the evaporator and remove cross flow fan by
pulling both cross flow fan and fan motor. (Fig.10)
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CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
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.
− 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. 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.
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CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
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.
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13 Troubleshooting Guide
13.1. Refrigeration cycle system
In order to diagnose malfunctions, make sure that there is no
electrical problem before inspecting the refrigeration cycle.
Such problems include insufficient insulation, problem with the
power source, malfunction of compressor or fan motor.
The normal outlet air temperature and pressure of the
refrigeration cycle depend on various conditions, the standard
values for them are shown in the table to the right.
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
57
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CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
13.2. Relationship between the condition of the air conditioner and
pressure and electric current
Cooling Mode
Condition of the air
conditioner Low Pressure High Pressure Electric current during operation
Insufficient refrigerant (gas
Clogged capillary tube or
Short circuit in the indoor unit
Heat radiation deficiency of
leakage)
Strainer
the outdoo r unit
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
Nature of fault Symptom
Insufficient compressing of a compressor
Locked compressor
• Electric current during operation becomes approximately 20% lower than the normal value.
• The discharge tube of the compressor becomes abnorm ally hot (normally 154 to 194°F).
• The difference between high pressure and low pressure becomes almost zero.
• Electric current reaches a high level abnormally, and the value exceeds the limit of an
ammeter. In some cases, a breaker turns off.
• The compressor has a humming sound.
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14 Technical Data
14.1. Thermostat characteristics
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
59
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CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
14.2. Operation characteristics
14.2.1. CS-C9DK CU-C9DK
60
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CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
61
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CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
14.2.2. CS-C12DK CU-C12DK
62
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CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
63
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CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
15 Exploded View (Indoor Unit)
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.
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CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
16 Replacement Parts List (Indoor Unit)
<Model: CS-C9DKU / CS-C12DKU >
REF. NO. PART NAME & DESCRIPTION QTY. CS-C9DKU CS-C12DKU REMARKS
1 CHASSY COMPLETE 1 CWD50C1401 ← 0
2 FAN MOTOR, AC15W SINGLE 1 CWA921143 ← 0
3 CROSS FLOW FAN COMPLETE 1 CWH02C1031 ← 0
4 BEARING ASS’Y 1 CWH64K007 ← 0
5 SCREW - CROSS FLOW FAN 1 CWH4580304 ←
6 EVAPORATOR 1 CWB30C1745 CWB30C1746 0
7 FLARE NUT 1 CWT25026 (1/4”) ←
8 FLARE NUT 1 CWT25005 (3/8”) CWT25007 (1/2”)
9 INTAKE AIR SENSOR HOLDER 1 CWH32143 ←
10 DISCHARGE GRILLE COMPLETE 1 CWE20C2342 ← 0
11 VERTICAL VANE 9 CWE241150 ← 0
12 CONNECTING BAR 1 CWE261066 ←
13 CONNECTING BAR 1 CWE261070
14 AIR SWING MOTOR DC SINGLE 12V 300OHM 1 CWA98260 ← 0
15 LEAD WIRE - AIR SWING MOTOR 1 CWA67C3977
16 CAP - DRAIN TRAY 1 CWH521096 ← 0
17 HORIZONTAL VANE 1 CWE241173
18 BACK COVER CHASSIS 1 CWD932454 ←
19 CONTROL BOARD CASING 1 CWH102259B
20 TERMINAL BOARD COMPLETE 1 CWA28C2226 ← 0
21 ELECTRONIC CONTROLLER - MAIN 1 CWA743706 CWA743707 0
22 SENSOR COMPLETE 1 CWA50C2135
23 CONTROL BOARD FRONT COVER 1 CWH131207
24 INDICATOR COMPLETE 1 CWE39C1127 ← 0
25 INDICATOR HOLDER 1 CWD932429 ←
26 INDICATOR HOLDER 1 CWD932430 ←
27 CONTROL BOARD FRONT COVER 1 CWH13C1120 ←
28 CONTROL BOARD FRONT COVER CO. 1 CWH131245
29 REMOTE CONTROL COMPLETE 1 CWA75C2598 ← 0
30 FRONT GRILLE COMPLETE 1 CWE11C3135
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 SUPER ALLERU BUSTER FILTER 1 CWD00C1141
38 INSTALLATION PLATE 1 CWH361067 ←
39 BAG COMPLETE - INSTALLATION SCREW 1 CWH82C067 ←
40 FULCRUM 1 CWH621046 ←
←
←
←
←
←
←
←
←
←
←
←
←
←
←
←
0
0
0
0
0
(Note)
• All parts are supplied from PHAAM, Malaysia (Vendor Code: 061).
• “O” marked parts are recommended to be kept in stock.
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CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
17 Exploded View (Outdoor Unit)
CU-C9DK
CU-C12DK
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.
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CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
18 Replacement Parts List (Outdoor Unit)
<Model: CU-C9DKU / CU-C12DKU>
REF. NO. PART NAME & DESCRIPTION QTY. CU-C9DKU CU-C12DKU REMARKS
1 CHASSY ASS’Y 1 CWD50K2055A ← 0
2 SOUND PROOF MATERIAL 1 CWG302125 ←
3 FAN MOTOR BRACKET 1 CWD541030 ←
4 SCREW - FAN MOTOR BRACKET 2 CWH551059 ←
5 FAN MOTOR, AC31W SINGLE 1 CWA951244 ← 0
6 SCREW - FAN MOTOR MOUNT 3 CWH55406
7 PROPELLER FAN ASS’Y 1 CWH03K1006 ← 0
8 NUT - PROPELLER FAN 1 CWH56053
9 COMPRESSOR (60HZ, 115V) 1 2R13S126A6AJ 2P19S126C1A 0
10 ANTI - VIBRATION BUSHING 3 CWH50077 ←
11 NUT - COMPRESSOR MOUNT 3 CWH56000 ←
12 CONDENSER 1 CWB32C1291 CWB32C1267 0
13 CAPILLARY TUBE ASS’Y 1 CWB15K1150 CWB15K1151 0
14 STRAINER 1 CWB11025 15 HOLDER COUPLING 1 CWH351015A
16 2-WAY VALVE (LIQUID) 1 CWB021147 ← 0
17 3-WAY VALVE (GAS) 1 CWB011147 CWB011148 0
18 OVERLOAD PROTECTOR 1 CWA67C4718 CWA67C4719
19 HOLDER - O.L.P. 1 CWH7041200
20 TERMINAL COVER 1 CWH171011 ←
21 NUT - TERMINAL COVER 1 CWH7080300
22 SOUND PROOF BOARD 1 CWH151022A CWH151023A
23 CONTROL BOARD CASING 1 CWH102186 24 TERMINAL BOARD ASS’Y 1 CWA28K1123 ← 0
25 ELECTRO MAGNETIC SWITCH 1 K6A1ALA00001 ← 0
26 CAPACITOR - COMPRESSOR 1 XS371356FP-C
27 HOLDER CAPACITOR 1 CWH30057 CWH30060
28 CAPACITOR - FAN MOTOR (8.0µF, 230V) 1 JS231805SPQH
29 CABINET SIDE PLATE (L) 1 CWE041044A ← 0
30 CABINET SIDE PLATE (R) 1 CWE041043A CWE041073A 0
31 CABINET FRONT PLATE 1 CWE06K1036 ← 0
32 WIRE NET COMPLETE 1 CWD04C1010 CWD04C1012
33 CABINET TOP PLATE 1 CWE031018A ←
34 CONTROL BOARD COVER 1 CWH131088
35 CONTROL BOARD COVER COMP 1 CWH13C1065
36 HANDLE 1 CWE161010
37 OPERATION INSTRUCTIONS 1 CWF564722
38 INSTALLATION INSTRUCTIONS 1 CWF612765
(35µF, 370VAC)
←
←
←
←
←
XS371506FP-B
(50µF, 370VAC)
←
←
←
←
←
←
0
0
0
0
0
(Note)
• All parts are supplied from PHAAM, Malaysia (Vendor Code: 061).
• “O” marked parts are recommended to be kept in stock.
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X
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
19 Electronic Circuit Diagram
19.1. Indoor Unit
SCHEMATIC DIAGRAM 1/4
ELECTRONIC CONTROL UNIT
Auto
SW
2
1
SW01
CN-SONIC
1
2
3
R11
1k
C01
0.01
R07
10k
R78
10k
BZ
BZ01
R12
1k
R55
c
1k
R88
C02
5.1k
0.01
b
Q01
C143XKT
e
DISPLAY COMPLETE
IC401
1
R401 47
2
3
+
C401
47
6.3V
TIMER/AIR SW(ORG)
POWER(GRN)
POWERFUL(ORG)
QUIET(ORG)
ECONOMY(GRN)
D404
D402
D403
D405
D406
8
7
6
5
4
3
2
1
CN-DISP
CN-DISP
10
1
2
3
4
5
6
7
8
9
C24 0.01
0.01
C25 0.01
C28
C27
0.01
C26 0.01
C29
0.1
C35
0.01
R15
220
R27 220
220
3.3k
R17
R73
R13 220
R14 220
c
e
100
R68
R31
b
Q09
1k
R56
1k
CN-HA
68
R58
C22
10k
4
3
2
1
0.01
C23
0.01
R59 1k
JP5
R60
10k
Page 69
SCHEMATIC DIAGRAM 2/4
XKTX
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
C38
1000p
R10
10k
R18
R19
R20
R21
R22
R23
R24
R25
R06 24k
R75 1k
C39
R76 1k
R74 1k
R77 1k
D12
D11
D10
D09
D08
D07
D06
D05
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
P47
P45
P50
P51
P52
P53
P54
P55
P56
P57
Vss0
VDD0
P30
P31
P32
P33
P34
P35
P36
17
P46
RY-PWR DRIVE SIGNAL
DISPLAY
AUTO RESTART
S030
S130
18
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
P42
P43
P44
P24
P23
SCK30
P67
P40
P41
STEPPING
MOTOR
DRIVE
SIGNAL
BUZZER
IC01
INTAKE AIR TEMP
PIPE TEMP
GROU ND
AV55
VDD1
P25
P64
P65
P66
AUTO OPERATION
TEST RUN
REMOTE CONTROL
SOUND
POWER CLOCK INPUT
REMOTE-CONTROL
COMMAND INPUT
TIMER SHORTEN
AN15
AN16
AN17
2625242322212019
P75
POWER
AN14
RESET
30292827
P74
OSC
AN13
AN12
31
P72
P73
P71
48
TOD
47
P03
46
INTP2
45
INTP1
44
INTP0
43
Vss1
42
X1
41
X2
40
JP2
39
IC(VPP)
38
XT1
37
XT2
RESET
36
AVDD
35
AVref
34
AN10
33
AN11
32
8
1
2
3
4
5
6
7
9
IC05
B1HBGGF00013
CN-STM1
8
1
16
2
16
15
14
13
12
11
10
RY-PWR
R05
43
1/2W
R04
43
1/2W
B1HBGGF00013
12345
(ZH5)
12345
3
4
5
6
7
IC06
15
14
13
12
11
10
R09
10k
JX2
9
5
DI
SK
6
DO
CS
Vcc
GND
8
RS
R/B
IC02
C3EBDG000021
PIPE TEMP. SENSOR
4
3
27
C05
1
0.1
16V
C04
R30
0.1
20k
16V
(PH) (RED)
CN-TH
3
1
4
2
C08
R33
0.1
15k
16V
AIR TEMP. SENSOR
(15k 3950)(20k 3950)
VERTICAL
69
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CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
SCHEMATIC DIAGRAM 3/4
Q02
C143XKTX
b
4.7k
Q03
C143XKTX
b
4.7k
JP3
C36
R38
10k
e
10k
e
R32
150k
4.096 MHz
(47pF X 2)
C18
0.1
16V
C10
0.1
16V
C15
0.01
R02 1k
c
c
R49 1k
SSR01
R41
1k
R43
R37
10k
R01
10k
R79
10k
R 6 6 R 4 8
5
2
ZNR01
R44
C16
1k
0.01
X01
R50
100k
JP4
C37
0.01
JX1
TEST
12
T01
IC04
C07
0.1
16V
C17
3300
35V
REGULATOR
OO
I
G
D16
R57 12k
D15
R47 12k
L01
125 H
R03 1.3k
R29
1.6k
DB01
~
~
+
8
13
c
b
e
C14
470
25V
IC03
REGULATOR
5V12V
I
G
C03
0.047
C11
100
16V
FUSE
T 2A L 250V
RY-PWR
AC-WHT
L
P
TEMPERATURE
FUSE
1
2
TO
OUTDOOR
3
CR03
SSR01
C19
0.047
CN-FM
1
C-FM
2
FAN MOTOR
3
4
1.5
5
D01
C32
0.01
CN-FB
1
2
3
4
3
2
1
CN-ION
c
e
b
Q05
C2412KTX
R67
R51
10k
R62
Q06
C2412KTX
c
e
R36
1k
C21
10
50V
C12
0.1
16V
+
C31
0.01
Q07
c
b
e
Z01
7.5V
R53
R52
10k
b
R54
6.2k
R61
10k
Q08
c
e
6.2k
b
R64
6.2k
R63
6.2k
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SCHEMATIC DIAGRAM 4/4
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
C9DKU/C12DKU
TO
POWER
SUPPLY
SOURCE
TO
OUTDOOR
UNIT
BR
3L2L112
W
OUTDOOR UNIT
TERMINAL
Y
Y
65
MAGNETIC RELAY
BR
41
GRY
FAN MOTOR
Y
B
CAPACITOR
B
OVERLOAD
PROTECTOR
B
CAPACITOR
R
COMPRESSOR
R
B
Y
71
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CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
72
Page 73
How to use electronic circuit diagram
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
TIMER TABLE
Real Timer 1 hr. 1 min.
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 20 sec. 0 sec.
Soft Dry OFF 6 min. 36 sec.
Deodorizing Control
Comp. Reverse Rotatio n 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.
Test Mode
Name Time (When test point Remarks
Short-circuited)
10 min. 10 sec.
1 min. 1 sec.
ON 10 min. 60 sec. Soft Dry: 10 min. operation
Cooling 40 sec. 4 sec.
70 sec. 7 sec.
20 sec. 2 sec.
180 sec. 18 sec.
Soft Dry 40 sec. 4 sec.
360 sec. 36 sec.
2 min. 0 sec.
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CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
19.2. Remote Control
74
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19.3. Print Pattern Indoor Unit Printed Circuit Board
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
75
Page 76
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
76
Page 77
Indicator Printed Circuit Board
CS-C9DKU CU-C9D KU / CS-C12DKU CU-C12DKU
77
[PHAAM] Printed in Malaysia
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