Panasonic Cs C9dku User Manual

Order No. MAC0502033C1  
Air Conditioner  
CS-C9DKU CU-C9DKU  
CS-C12DKU CU-C12DKU  
CONTENTS  
Page  
Page  
1 Features  
2
3
8.5. Indoor Fan Speed Control  
8.6. Outdoor Fan Speed Control  
8.7. Vertical Airflow Direction Control  
8.8. Horizontal Airflow Direction Control  
8.9. Powerful Operation  
21  
23  
23  
24  
24  
25  
26  
26  
26  
27  
28  
34  
34  
36  
36  
36  
2 Functions  
3 Product Specifications  
3.1. CS-C9DKU CU-C9DKU  
3.2. CS-C12DKU CU-C12DKU  
4 Dimensions  
6
6
8
10  
10  
11  
12  
13  
14  
15  
15  
16  
17  
18  
8.10. Quiet Operation  
4.1. Indoor Unit & Remote Control  
4.2. Outdoor Unit  
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  
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  
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.  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
2 Functions  
ı
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CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
4
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
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CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
3 Product Specifications  
3.1. CS-C9DKU CU-C9DKU  
Unit  
Indoor unit  
Outdoor unit  
Power Source (Phase, Voltage, Cycle)  
Cooling Capacity  
Moisture Removal  
ø, V, Hz  
kW (BTU/h)  
l/h (Pint/h)  
Single, 115, 60  
2.58 (8,800)  
1.0 (2.1)  
Airflow Method  
OUTLET  
SIDE VIEW  
TOP VIEW  
INTAKE  
Air Volume  
Lo  
Me  
Hi  
m3/min (cfm)  
m3/min (cfm)  
m3/min (cfm)  
m3/min (cfm)  
dB (A)  
4.7 (164) - 4.7 (164)  
5.7 (202) - 5.7 (202)  
7.2 (250) - 7.2 (250)  
7.8 (274) - 7.8 (274)  
High 36 - 36, Low 26 - 26  
High 49 - 39  
33.8 (1,190)  
High 49  
High 62  
SHi  
Noise Level  
Power level dB  
W
Electrical Data  
Input Power  
Running Current  
EER  
790  
7.2  
3.27 (11.10)  
42.0  
A
W/W (BTU/hW)  
A
Starting Current  
Piping Connection Port  
(Flare piping)  
inch  
inch  
G ; Half Union 3/8”  
L ; Half Union 1/4”  
G ; 3-way valve 3/8”  
L ; 2-way valve 1/4”  
Pipe Size  
(Flare piping)  
inch  
inch  
G ; (gas side) 3/8”  
L ; (liquid side) 1/4”  
G ; (gas side) 3/8”  
L ; (liquid side) 1/4”  
Drain  
Hose  
Inner diameter  
Length  
Length  
inch (mm)  
inch (mm)  
m
20/32 (16)  
25-19/32 (650)  
Power Cord  
Number of core-wire  
Height  
Width  
Dimensions  
inch (mm)  
inch (mm)  
inch (mm)  
lb (kg)  
11 - 1/32 (280)  
31 - 15/32 (799)  
7 - 7/32 (183)  
20 (9.0)  
21 - 1/4 (540)  
30 - 23/32 (780)  
11 - 3/8 (289)  
64 (29)  
Rotary (1 cylinder)  
rolling piston type  
Depth  
Net Weight  
Compressor  
Description  
Motor  
Rated  
Type  
Output  
Induction (2-poles)  
W
600  
Fan Motor  
Description  
Material  
Type  
Input  
Rated  
Cross-flow Fan  
ASG32K1  
Induction (4-poles)  
60.61  
Propeller Fan  
PP Resin  
Induction (6-poles)  
W
W
85.8  
30  
Output  
15  
Fan Speed Low  
Medium  
rpm  
rpm  
rpm  
rpm  
750 - 750  
920 - 920  
1,160 - 1,160  
1,250 - 1,250  
Evaporator  
Copper  
845  
High  
SuperHigh  
Heat Exchanger  
Description  
Tube material  
Fin material  
Fin Type  
Condenser  
Copper  
Aluminium (Blue Coat)  
Louver Fin  
Aluminium (Pre Coat)  
Slit Fin  
Row / Stage  
(Plate fin configuration, forced draft)  
2 × 15  
21  
1 × 20  
16  
FPI  
Size (W × H × L)  
inch (mm)  
24-1/32 ×12-13/32 × 1  
(610 × 315 × 25.4)  
33-4/32 × 20-3/8 × 28/32  
(841 × 508 × 22)  
Refrigerant Control Device  
Refrigeration Oil  
Capillary Tube  
SUNISO 4GDID or ATMOS M60  
or ATMOS 56  
(cm3)  
g (oz)  
Refrigerant (R-22)  
680 (24.0)  
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CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
Unit  
Indoor unit  
Outdoor unit  
Thermostat  
Electrical  
Protection Device  
Capillary Tube  
2 Stage Overload Protector  
Length  
Flow Rate  
Inner Diameter  
Material  
Style  
inch (mm)  
l/min  
inch (mm)  
26-18/32 (675)  
13.0  
20/32 (1.6)  
Air Filter  
P.P.  
Honeycomb  
Capacity Control  
Capillary Tube  
Compressor Capacitor  
Fan Motor Capacitor  
µF, VAC  
µF, VAC  
35 µF, 370VAC  
8.0 µF, 230VAC  
5.0 µF, 230VAC  
Note:  
Specifications are subjected to change without prior notice for further improvement.  
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CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
3.2. CS-C12DKU CU-C12DKU  
Unit  
Indoor unit  
Outdoor unit  
Power Source (Phase, Voltage, Cycle)  
Cooling Capacity  
Moisture Removal  
ø, V, Hz  
kW (BTU/h)  
l/h (Pint/h)  
Single, 115, 60  
3.60 (12,300)  
1.6 (3.4)  
Airflow Method  
OUTLET  
INTAKE  
SIDE VIEW  
TOP VIEW  
Air Volume  
Lo  
Me  
Hi  
m3/min (cfm)  
m3/min (cfm)  
m3/min (cfm)  
m3/min (cfm)  
dB (A)  
5.6 (199) - 5.6 (199)  
6.8 (238) - 6.8 (238)  
8.0 (280) - 8.0 (280)  
8.2 (289) - 8.2 (289)  
High 39 - 39, Low 29 - 29  
High 52 - 42  
31.1(1,100)  
High 49  
High 62  
SHi  
Noise Level  
Power level dB  
kW  
Electrical Data  
Input Power  
Running Current  
EER  
1.16  
10.3  
3.10 (10.60)  
57.0  
A
W/W (BTU/hW)  
A
Starting Current  
Piping Connection Port  
(Flare piping)  
inch  
inch  
G ; Half Union 1/2”  
L ; Half Union 1/4”  
G ; 3-way valve 1/2”  
L ; 2-way valve 1/4”  
Pipe Size  
(Flare piping)  
inch  
inch  
G ; (gas side) 1/2”  
L ; (liquid side) 1/4”  
G ; (gas side) 1/2”  
L ; (liquid side) 1/4”  
Drain  
Hose  
Inner diameter  
Length  
Length  
inch (mm)  
inch (mm)  
m
20 / 32 (16)  
25-19/32 (650)  
Power Cord  
Number of core-wire  
Height  
Width  
Dimensions  
inch (mm)  
inch (mm)  
inch (mm)  
lb (kg)  
11 - 1/32 (280)  
31 - 15/32 (799)  
7 - 7/32 (183)  
20 (9.0)  
21 - 1/4 (540)  
30 - 23/32 (780)  
11 - 3/8 (289)  
73 (33)  
Depth  
Net Weight  
Compressor  
Description  
Rotary (1 cylinder) rolling piston  
type  
Motor  
Rated  
Description  
Material  
Motor  
Type  
Output  
Induction (2-poles)  
W
850  
Propeller Fan  
PP Resin  
Induction (6-poles)  
66.0 - 75.0  
31  
Fan Motor  
Cross-flow Fan  
ASG32K1  
Induction (4-poles)  
60.61  
Type  
Input  
Output  
W
W
Rated  
15  
Fan Speed Low  
Medium  
rpm  
rpm  
rpm  
rpm  
900 - 900  
1,080 - 1,080  
1,280 - 1,280  
1,310 - 1,310  
Evaporator  
Copper  
High  
SuperHigh  
820 - 820  
Condenser  
Copper  
Heat Exchanger  
Description  
Tube material  
Fin material  
Fin Type  
Aluminium (Pre Coat)  
Slit Fin  
Aluminium (Blue Coat)  
Louver Fin  
Row / Stage  
(Plate fin configuration, forced draft)  
2 × 15  
21  
2 × 24  
16  
FPI  
Size (W × H × L)  
inch (mm)  
24-1/32 × 12-13/32 × 1  
(610 × 315 × 25.4)  
29-10/32;28-15/32 × 19-27/32 ×  
1
744.2;723.5 × 504 × 25.4  
Refrigerant Control Device  
Refrigeration Oil  
Capillary Tube  
ATMOS M60 or SUNISO 4GDID  
or ATMOS M56  
760 (26.8)  
2 Stage Overload Protector  
(cm3)  
g (oz)  
Refrigerant (R-22)  
Thermostat  
Protection Device  
Electrical  
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CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
Unit  
inch (mm)  
l/min  
Indoor unit  
Outdoor unit  
16-23/32 (425)  
18.0  
2/32 (1.7)  
Capillary Tube  
Air Filter  
Length  
Flow Rate  
Inner Diameter  
Material  
Style  
inch (mm)  
P.P.  
Honeycomb  
Capacity Control  
Capillary Tube  
Compressor Capacitor  
Fan Motor Capacitor  
µF, VAC  
µF, VAC  
50 µF, 370VAC  
8.0 µF, 230VAC  
5.0 µF, 230VAC  
Note:  
Specifications are subjected to change without prior notice for further improvement.  
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CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
4 Dimensions  
4.1. Indoor Unit & Remote Control  
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CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
4.2. Outdoor Unit  
CU-C9DKU  
CU-C12DKU  
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CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
5 Refrigeration Cycle Diagram  
CS-C9DKU CU-C9DKU  
CS-C12DKU CU-C12DKU  
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CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
6 Block Diagram  
CS-C9DKU CU-C9DKU  
CS-C12DKU CU-C12DKU  
13  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
7 Wiring Diagram  
CS-C9DKU CU-C9DKU  
REMARKS  
CS-C12DKU CU-C12DKU  
B
: BLUE  
BR  
BL  
GRY  
O
: BROWN  
: BLACK  
: GRAY  
: ORANGE  
: PINK  
P
R
: RED  
W
: WHITE  
Y/G  
: YELLOW/GREEN  
Power Supply Cord  
Resistance of Indoor Fan Motor Windings  
MODEL  
CS-C9DKU  
CS-C12DKU  
CWA921143  
82.4 Ω  
CONNECTION  
BLUE-YELLOW  
YELLOW-RED  
103.4 Ω  
Note: Resistance at 68°F of ambient temperature.  
Resistance of Outdoor Fan Motor Windings  
MODEL  
CU-C9DKU  
CU-C12DKU  
CWA951244  
61.2 Ω  
CONNECTION  
BLUE-YELLOW  
YELLOW-RED  
53.4 Ω  
Note: Resistance at 78.8°F of ambient temperature.  
Resistance of Compressor Windings  
MODEL  
CONNECTION  
C - R  
CU-C9DKU  
2R135126A  
0.938 Ω  
CU-C12DKU  
2P19S126C-1A  
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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CS-C9DKU CU-C9DKU / 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  
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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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CS-C9DKU CU-C9DKU / 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.  
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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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CS-C9DKU CU-C9DKU / 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  
S Hi  
Hi  
Me  
1250  
1160  
920  
840  
750  
750  
710  
-
1310  
1280  
1080  
960  
900  
850  
820  
-
H Lo  
C Lo  
Lo-  
S Lo  
SS Lo  
Q S Hi  
Q Hi  
Q Me  
QH Lo  
Q Lo  
-
-
1060  
820  
-
1180  
980  
-
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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CS-C9DKU CU-C9DKU / 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.  
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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  
2. Level gauge  
5. Spanner  
6. Pipe cutter  
9. Gas leak detector  
10. Measuring tape  
13. Multimeter  
14. Torque wrench  
13.3 lbf.ft  
31.0 lbf.ft  
40.6 lbf.ft  
3. Electric drill, hole core drill 7. Reamer  
(ø2 3/4”)  
4. Hexagonal wrench (5/32”) 8. Knife  
11. Thermometer  
12. Megameter  
15. Vacuum pump  
16. Gauge manifold  
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.  
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 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 UL listed or CSA approved AWG16 wire (or heavier wire) and connect tightly for indoor/outdoor 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, abnormal 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 installation, 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  
10.4. Indoor/Outdoor Unit  
Installation Diagram  
Applicable piping kit  
CZ-3F5, 7AEN (C9DK)  
CZ-4F5,7, 10AN (C12DK)  
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.  
This illustration is for explanation purposes only.  
The indoor unit will actually face a different way.  
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.  
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10.5. Indoor unit  
10.5.1. SELECT THE BEST LOCATION  
(Refer to “Select the best location”  
section)  
10.5.3. TO DRILL A HOLE IN THE WALL  
AND INSTALL A SLEEVE OF  
PIPING  
1. Insert the piping sleeve to the hole.  
10.5.2. HOW TO FIX INSTALLATION  
PLATE  
2. Fix the bushing to the sleeve.  
3. Cut the sleeve until it extrudes about 19/32” from the wall.  
The mounting wall is strong and solid enough to prevent it from  
the vibration.  
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.  
Secure the cable onto the control board with the holder  
(clamper).  
10.5.5. INDOOR UNIT ELECTRICAL  
WIRING  
1. Remove the control board metal cover.  
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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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.  
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.  
10.6. Outdoor unit  
4. Pull the lower section of the front grille towards you to  
remove the front grille.  
10.6.1. SELECT THE BEST LOCATION  
(Refer to “Select the best location”  
section)  
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.  
10.6.2. INSTALL THE OUTDOOR UNIT  
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.  
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.  
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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  
CS-C12DK  
3/8” (31.0 lbf.ft)  
1/2” (40.6 lbf.ft)  
1/4” (13.3 lbf.ft)  
1/4” (13.3 lbf.ft)  
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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4. Fix the conduit connectors to the conduit holes with lock-  
nuts, then secure them against the side panel.  
10.6.5. OUTDOOR UNIT ELECTRICAL  
WIRING  
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).  
1. Remove Top Panel.  
8. After completing wiring connection, reattach the control  
board cover and the top panel to the original position with  
the screws.  
2. Remove Control Board Cover (Metal & Resin).  
3. Remove Plugs.  
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 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 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  
(With valve cap)  
(With valve cap)  
(With cap)  
Evacuation  
(Installation and  
Re-installation)  
Close  
(Counter-Clockwise)  
Close  
(Clockwise)  
Open  
(Push-pin)  
Operation  
Open  
Open  
Close  
(With valve cap)  
(With valve cap)  
(With cap)  
Pumping down  
(Transferring)  
Close  
(Clockwise)  
Open  
(Counter-Clockwise)  
Open  
(Connected manifold  
gauge)  
Evacuation  
(Servicing)  
Open  
Open  
Open  
Open  
Open  
With vacuum pump  
Gas charging  
(Servicing)  
Open  
(With charging cylinder)  
Pressure check  
(Servicing)  
Open  
(Connected manifold  
gauge)  
Open  
Open  
Open  
Open  
Gas releasing  
(Servicing)  
Open  
(Connected manifold  
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.  
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).  
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  
8. Mount the valve caps onto the 2-way and 3-way valves.  
vacuum pump.  
Be sure to check for gas leakage.  
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.  
Caution  
If gauge needle does not move from 0 cmHg to -76  
cmHg in step (3) above, take the following measures:  
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.  
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.  
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.  
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11.2. Pumping down  
Procedure:  
1. Confirm that both the 2-way and 3-way valves are set to  
the opened position.  
6. Operate the air conditioner at the cooling cycle and  
stop it when the gauge indicates 0 PSI (0 kg/cm2G).  
Remove the valve stem caps and confirm that the valve  
stems are in the opened position.  
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.  
Be sure to use a hexagonal wrench to operate the valve  
stems.  
(Simply press the pumping down button if it is  
equipped.)  
2. Operate the unit for 10 to 15 minutes.  
So that the unit can be operated.  
3. Stop operation and wait for 3 minutes, then connect the  
charge set to the service port of the 3-way valve.  
7. Immediately set the 3-way valve to the closed position.  
Connect the charge hose with the push pin to the Gas  
service port.  
Do this quickly so that the gauge ends up indicating 14.5  
PSI (1 kg/cm2G) to 43.5 PSI (3 kg/cm2G).  
4. Air purging of the charge hose.  
8. Use refrigerant reclaiming equipment to collect  
refrigerant from indoor unit and pipes.  
Open the low-pressure valve on the charge set slightly  
to purge air from the charge hose.  
9. Disconnect the charge set, and mount the 2-way and 3-  
way valve’s stem caps and the service port caps.  
5. Set the 2-way valve to the closed position.  
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.  
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).  
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  
9. Mount the valve caps onto the 2-way and 3-way valves.  
vacuum pump.  
BE SURE TO USE REFRIGERANT RECLAIMING  
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.  
EQUIPMENT  
REFRIGERANT.  
WHILE  
DISCHARGING  
THE  
Purge the air from charge set’s centre hose.  
Be sure to check for gas leakage.  
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.  
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:  
BE SURE TO TAKE THIS PROCEDURE IN ORDER TO  
AVOID GAS LEAKAGE.  
If the leaks stop when the piping connections are  
tightened further, continue working from step 3.  
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/cm2).  
If the leaks do not stop when the connections are  
retightened, repair the location of the leak.  
48  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
11.4. Balance refrigerant of the 2-way, 3-way valves  
(Lack of refrigerant in the refrigeration cycle)  
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/cm2G) 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/cm2G), discharge the refrigerant until the  
gauge indicates 7.25 PSI (0.5 km/cm2G) to 14.5 PSI (1  
kg/cm2G). If this is the case, it will not be necessary to  
apply a evacuation.  
Discharge the refrigerant gradually; if it is discharged  
too suddenly, the refrigeration oil will also be  
discharged.  
5. Turn on refrigerant reclaiming equipment.  
49  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
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.  
50  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
11.6. Gas charging  
(After Evacuation)  
Procedure:  
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.  
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.  
4. Immediately disconnect the charge hose from the 3-  
way valve’s service port.  
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).  
Stopping partway will allow the refrigerant to be  
discharged.  
3. Open the valve (Low side) on the charge set and charge  
the system with liquid refrigerant.  
If the system has been charged with liquid refrigerant  
while operating the air conditioner, turn off the air  
conditioner before disconnecting the hose.  
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)  
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.  
51  
CS-C9DKU CU-C9DKU / 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  
Fig. 3  
Remove the 2 caps and 2 screws at the bottom of the  
Front Grille.(Fig.1)  
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)  
Fig. 2  
Remove the Front Grille Complete. (Fig.2)  
52  
CS-C9DKU CU-C9DKU / 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)  
Fig. 4  
Remove AC-Wht connector from the PCB. (Fig.6)  
Remove the indicator complete screw, and then remove  
the Indicator Complete.(Fig.4)  
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)  
53  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
12.3. Indoor Fan Motor and Cross Flow Fan Removal Procedures  
Remove Control Board cover  
Fig. 9  
Fig. 7  
Remove the cross flow fan bushing from the chassis.  
(Fig.9)  
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)  
Loosen the fan boss screw at the cross flow fan. (Fig.9)  
Pull down the Discharge Grille Complete. (Fig.7)  
Fig. 10  
Push up the evaporator and remove cross flow fan by  
Fig. 8  
pulling both cross flow fan and fan motor. (Fig.10)  
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)  
54  
CS-C9DKU CU-C9DKU / 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.  
55  
CS-C9DKU CU-C9DKU / 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.  
56  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
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.  
57  
CS-C9DKU CU-C9DKU / 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  
leakage)  
Clogged capillary tube or  
Strainer  
Short circuit in the indoor unit  
Heat radiation deficiency of  
the outdoor 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  
Electric current during operation becomes approximately 20% lower than the normal value.  
The discharge tube of the compressor becomes abnormally hot (normally 154 to 194°F).  
The difference between high pressure and low pressure becomes almost zero.  
Insufficient compressing of a compressor  
Electric current reaches a high level abnormally, and the value exceeds the limit of an  
ammeter. In some cases, a breaker turns off.  
Locked compressor  
The compressor has a humming sound.  
58  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
14 Technical Data  
14.1. Thermostat characteristics  
59  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
14.2. Operation characteristics  
14.2.1. CS-C9DK CU-C9DK  
60  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
61  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
14.2.2. CS-C12DK CU-C12DK  
62  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
63  
CS-C9DKU CU-C9DKU / 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.  
64  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
16 Replacement Parts List (Indoor Unit)  
<Model: CS-C9DKU / CS-C12DKU >  
REF. NO.  
1
PART NAME & DESCRIPTION  
CHASSY COMPLETE  
QTY.  
1
1
1
1
1
1
1
1
1
1
9
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
1
1
1
1
1
CS-C9DKU  
CWD50C1401  
CS-C12DKU  
REMARKS  
0
0
0
0
2
FAN MOTOR, AC15W SINGLE  
CROSS FLOW FAN COMPLETE  
BEARING ASS’Y  
CWA921143  
CWH02C1031  
CWH64K007  
CWH4580304  
CWB30C1745  
CWT25026 (1/4”)  
CWT25005 (3/8”)  
CWH32143  
3
4
5
SCREW - CROSS FLOW FAN  
EVAPORATOR  
6
CWB30C1746  
0
7
FLARE NUT  
8
FLARE NUT  
CWT25007 (1/2”)  
9
INTAKE AIR SENSOR HOLDER  
DISCHARGE GRILLE COMPLETE  
VERTICAL VANE  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
CWE20C2342  
CWE241150  
CWE261066  
CWE261070  
CWA98260  
0
0
CONNECTING BAR  
CONNECTING BAR  
AIR SWING MOTOR DC SINGLE 12V 300OHM  
LEAD WIRE - AIR SWING MOTOR  
CAP - DRAIN TRAY  
0
0
CWA67C3977  
CWH521096  
CWE241173  
CWD932454  
CWH102259B  
CWA28C2226  
CWA743706  
CWA50C2135  
CWH131207  
CWE39C1127  
CWD932429  
CWD932430  
CWH13C1120  
CWH131245  
CWA75C2598  
CWE11C3135  
CWE22C1154  
CWE141073  
CWD001144  
XTN4+16C  
HORIZONTAL VANE  
BACK COVER CHASSIS  
CONTROL BOARD CASING  
TERMINAL BOARD COMPLETE  
ELECTRONIC CONTROLLER - MAIN  
SENSOR COMPLETE  
0
0
0
CWA743707  
CONTROL BOARD FRONT COVER  
INDICATOR COMPLETE  
INDICATOR HOLDER  
0
INDICATOR HOLDER  
CONTROL BOARD FRONT COVER  
CONTROL BOARD FRONT COVER CO.  
REMOTE CONTROL COMPLETE  
FRONT GRILLE COMPLETE  
INTAKE GRILLE COMPLETE  
GRILLE DOOR  
0
0
0
0
AIR FILTER  
0
SCREW - FRONT GRILLE  
CAP - FRONT GRILLE  
DRAIN HOSE  
CWH521109  
CWH851063  
CWD00C1141  
CWH361067  
CWH82C067  
CWH621046  
SUPER ALLERU BUSTER FILTER  
INSTALLATION PLATE  
BAG COMPLETE - INSTALLATION SCREW  
FULCRUM  
(Note)  
All parts are supplied from PHAAM, Malaysia (Vendor Code: 061).  
“O” marked parts are recommended to be kept in stock.  
65  
CS-C9DKU CU-C9DKU / 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.  
66  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
18 Replacement Parts List (Outdoor Unit)  
<Model: CU-C9DKU / CU-C12DKU>  
REF. NO.  
PART NAME & DESCRIPTION  
CHASSY ASS’Y  
QTY.  
1
CU-C9DKU  
CWD50K2055A  
CU-C12DKU  
REMARKS  
0
1
2
SOUND PROOF MATERIAL  
FAN MOTOR BRACKET  
1
CWG302125  
CWD541030  
CWH551059  
CWA951244  
CWH55406  
3
1
4
SCREW - FAN MOTOR BRACKET  
FAN MOTOR, AC31W SINGLE  
SCREW - FAN MOTOR MOUNT  
PROPELLER FAN ASS’Y  
NUT - PROPELLER FAN  
COMPRESSOR (60HZ, 115V)  
ANTI - VIBRATION BUSHING  
NUT - COMPRESSOR MOUNT  
CONDENSER  
2
5
1
0
0
0
6
3
7
1
CWH03K1006  
CWH56053  
8
1
9
1
2R13S126A6AJ  
CWH50077  
2P19S126C1A  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
3
3
CWH56000  
1
CWB32C1291  
CWB15K1150  
CWB11025  
CWB32C1267  
0
0
CAPILLARY TUBE ASS’Y  
STRAINER  
1
CWB15K1151  
1
-
HOLDER COUPLING  
1
CWH351015A  
CWB021147  
CWB011147  
CWA67C4718  
CWH7041200  
CWH171011  
CWH7080300  
CWH151022A  
CWH102186  
CWA28K1123  
K6A1ALA00001  
2-WAY VALVE (LIQUID)  
3-WAY VALVE (GAS)  
1
0
0
1
CWB011148  
OVERLOAD PROTECTOR  
HOLDER - O.L.P.  
1
CWA67C4719  
1
0
TERMINAL COVER  
1
NUT - TERMINAL COVER  
SOUND PROOF BOARD  
1
1
CWH151023A  
CONTROL BOARD CASING  
TERMINAL BOARD ASS’Y  
ELECTRO MAGNETIC SWITCH  
CAPACITOR - COMPRESSOR  
1
-
1
0
0
0
1
1
XS371356FP-C  
XS371506FP-B  
(35µF, 370VAC)  
(50µF, 370VAC)  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
HOLDER CAPACITOR  
1
1
1
1
1
1
1
1
1
1
1
1
CWH30057  
CWH30060  
CAPACITOR - FAN MOTOR (8.0µF, 230V)  
CABINET SIDE PLATE (L)  
CABINET SIDE PLATE (R)  
CABINET FRONT PLATE  
WIRE NET COMPLETE  
JS231805SPQH  
CWE041044A  
CWE041043A  
CWE06K1036  
CWD04C1010  
CWE031018A  
CWH131088  
CWH13C1065  
CWE161010  
CWF564722  
CWF612765  
0
0
0
0
CWE041073A  
CWD04C1012  
CABINET TOP PLATE  
CONTROL BOARD COVER  
CONTROL BOARD COVER COMP  
HANDLE  
OPERATION INSTRUCTIONS  
INSTALLATION INSTRUCTIONS  
0
0
(Note)  
All parts are supplied from PHAAM, Malaysia (Vendor Code: 061).  
“O” marked parts are recommended to be kept in stock.  
67  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
19 Electronic Circuit Diagram  
19.1. Indoor Unit  
SCHEMATIC DIAGRAM 1/4  
ELECTRONIC CONTROL UNIT  
c
b
R55  
1k  
Q01  
Auto  
SW  
C143XKTX  
BZ  
2
e
BZ01  
1
SW01  
R07  
10k  
R11  
1k  
C01  
0.01  
R12  
1k  
R88  
5.1k  
C02  
0.01  
R78  
10k  
CN-SONIC  
1
2
3
R68  
100  
DISPLAY COMPLETE  
IC401  
C24 0.01  
C25 0.01  
1
R13  
R14  
220  
220  
R401 47  
2
C26 0.01  
3
+
C401  
47  
R15  
220  
6.3V  
CN-DISP  
8
7
6
5
4
3
2
1
1
TIMER/AIR SW(ORG)  
D404  
D402  
2
3
POWER(GRN)  
C29  
0.1  
4
R17  
220  
5
POWERFUL(ORG)  
QUIET(ORG)  
ECONOMY(GRN)  
D403  
D405  
D406  
6
R27 220  
7
8
9
c
10  
R73  
3.3k  
C28  
0.01  
C27  
0.01  
C35  
0.01  
b
CN-DISP  
Q09  
e
R31  
1k  
R56  
1k  
R58  
10k  
C22  
0.01  
CN-HA  
R59 1k  
4
3
2
1
JP5  
C23  
0.01  
R60  
10k  
68  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
SCHEMATIC DIAGRAM 2/4  
3XKTX  
C38  
1000p  
R10  
10k  
R18  
D12  
R19  
R20  
D11  
D10  
R21  
R22  
R23  
R24  
R25  
D09  
D08  
D07  
D06  
D05  
64  
63  
62  
61  
60  
59  
58  
57  
56  
55  
54  
53  
52  
51  
50  
49  
P71  
48  
47  
46  
45  
44  
43  
42  
41  
40  
1
2
3
4
5
6
7
8
9
P50  
P51  
TOD  
RY-PWR DRIVE SIGNAL  
STEPPING  
MOTOR  
DRIVE  
AUTO OPERATION  
TEST RUN  
P03  
REMOTE CONTROL  
SOUND  
SIGNAL  
P52  
P53  
P54  
P55  
INTP2  
BUZZER  
POWER CLOCK INPUT  
INTP1  
INTP0  
DISPLAY  
REMOTE-CONTROL  
COMMAND INPUT  
Vss1  
X1  
P56  
P57  
IC01  
R06 24k  
OSC  
X2  
Vss0  
JP2  
IC(VPP) 39  
XT1 38  
10 VDD0  
R75  
C39  
1k  
1k  
P30  
11  
R76  
12 P31  
13 P32  
XT2 37  
R74  
R77  
1k  
1k  
RESET  
36  
RESET  
POWER  
INTAKE AIR TEMP  
PIPE TEMP  
AVDD  
35  
14  
P33  
AVref  
34  
TIMER SHORTEN  
15  
AUTO RESTART  
GROU ND  
P34  
AN10  
33  
16  
P35  
19  
20  
21  
22  
23  
24  
25  
26  
31  
17  
18  
27  
28  
29  
30  
32  
8
1
2
3
4
5
6
7
16  
15  
14  
13  
12  
11  
10  
RY-PWR  
8
5
6
7
8
4
3
2
1
DI  
R09  
10k  
SK  
CS  
1
2
3
4
5
6
7
16  
15  
14  
13  
12  
11  
10  
JX2  
R05  
43  
1/2W  
DO  
GND Vcc  
RS  
C05  
0.1  
16V  
R04  
43  
1/2W  
R/B  
9
9
IC02  
C3EBDG000021  
IC05  
IC06  
B1HBGGF00013  
B1HBGGF00013  
C08  
0.1  
16V  
R33  
15k  
C04  
0.1  
16V  
R30  
20k  
3
1
4
2
5
5
4
4
3
3
2
2
1
1
(PH)  
(RED)  
CN-TH  
CN-STM1  
(ZH5)  
PIPE TEMP. SENSOR  
(20k 3950)  
AIR TEMP. SENSOR  
(15k 3950)  
VERTICAL  
69  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
SCHEMATIC DIAGRAM 3/4  
R 6 6  
R 4 8  
IC04  
IC03  
T01  
REGULATOR  
REGULATOR  
DB01  
5
2
8
~
+
12V  
G
O
5V O  
I
I
13  
C17  
3300  
35V  
C14  
470  
25V  
C11  
100  
16V  
~
G
c
D16  
D15  
b
R03  
1.3k  
R57 12k  
R47 12k  
Q02  
C143XKTX  
C07  
0.1  
16V  
c
RY-PWR  
AC-WHT  
R29  
1.6k  
e
L
b
4.7k  
FUSE  
P
T 2A L 250V  
10k  
C03  
0.047  
TEMPERATURE  
FUSE  
ZNR01  
e
c
SSR01  
Q03  
C143XKTX  
b
4.7k  
L01  
125  
1
2
3
H
TO  
OUTDOOR  
10k  
e
R41  
1k  
C16 R44  
0.01 1k  
R32  
150k  
X01  
C19  
0.047  
4.096 MHz  
(47pF X 2)  
CN-FM  
1
2
3
4
5
C-FM  
1.5  
FAN MOTOR  
R50  
100k  
JP3  
R49 1k  
CN-FB  
R36  
1k  
C18  
0.1  
1
2
3
16V  
C12  
0.1  
16V  
Z01  
7.5V  
R51  
10k  
c
JP4  
b
C21  
10  
50V  
Q06  
C2412KTX  
C10  
0.1  
16V  
R53  
10k  
R52  
6.2k  
C36  
c
Q05  
C2412KTX  
C37  
0.01  
e
R79  
10k  
b
R54  
6.2k  
e
C15  
0.01  
R38  
R43  
CN-ION  
4
3
2
1
JX1  
R37  
10k  
R61  
10k  
R62  
C31  
0.01  
D01  
Q08  
c
TEST  
b
1
2
R02  
1k  
R67  
R01  
10k  
Q07  
e
C32  
0.01  
R64  
6.2k  
c
b
R63  
6.2k  
e
70  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
SCHEMATIC DIAGRAM 4/4  
C9DKU/C12DKU  
B
FAN MOTOR  
CAPACITOR  
TO  
POWER  
SUPPLY  
SOURCE  
BR  
COMPRESSOR  
TO  
OUTDOOR  
UNIT  
CAPACITOR  
W
B
B
MAGNETIC RELAY  
GRY  
OUTDOOR UNIT  
TERMINAL  
Y
OVERLOAD  
PROTECTOR  
71  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
72  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
How to use electronic circuit diagram  
TIMER TABLE  
Test Mode  
(When test point  
Short-circuited)  
1 min.  
Name  
Time  
Remarks  
Real Timer  
1 hr.  
10 min.  
1 min.  
10 sec.  
1 sec.  
Time Delay Safety Control  
Forced Operation  
Time Save Control  
Anti-Freezing  
2 min. 58 sec.  
60 sec.  
7 min.  
0 sec.  
0 sec.  
4.2 sec.  
0 sec.  
4 min.  
Auto Mode Judgement  
Soft Dry  
20 sec.  
6 min.  
0 sec.  
OFF  
ON  
Cooling  
36 sec.  
60 sec.  
4 sec.  
7 sec.  
2 sec.  
18 sec.  
4 sec.  
36 sec.  
30 sec.  
0 sec.  
10 min.  
40 sec.  
70 sec.  
20 sec.  
180 sec.  
40 sec.  
360 sec.  
5 min.  
Soft Dry: 10 min. operation  
Deodorizing Control  
Soft Dry  
Comp. Reverse Rotation Detection  
Comp. ON 5 min. and above  
2 min.  
Comp./ Fan Motor Delay Timer  
Powerful Mode Operation  
Random Auto Restart Control  
1.6 sec.  
15 min.  
0 ~ 62 sec.  
0 sec.  
15 sec.  
0 ~ 6.2 sec.  
73  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
19.2. Remote Control  
74  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
19.3. Print Pattern  
Indoor Unit Printed Circuit Board  
75  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
76  
CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU  
Indicator Printed Circuit Board  
77  
[PHAAM] Printed in Malaysia  

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