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Auto Fan Speed during cooling operation:
1 Indoor fan will rotate alternately between off and on as shown in below diagram.
2 At the beginning of each compressor starts operation, indoor fan speed increases gradually for deodorizing
2 At the beginning of each compressor starts operation, indoor fan speed increases gradually for deodorizing
purpose.
3 For the first time the compressor operates, 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.
quickly.
4 During compressor stops, 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 turned off 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 restarts of compressor.
Auto Fan Speed during Soft Dry operation.
o Indoor fan will rotate alternately between off and Lo-.
o At the beginning of each compressor starts operation, indoor fan will increase fan speed gradually for
o At the beginning of each compressor starts operation, indoor fan will increase fan speed gradually for
deodorizing purpose.
o When compressor turned off for 6 minutes, indoor fan will start at Lo- to circulate the air in the room. This is
to obtain the actual reading of intake air temperature.
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Auto Fan Speed during Heating operation.
o Indoor fan will rotate in the range of SLo → Me according to the heat exchanger temperature.
CS-W7NKD, CS-W9NKD, CS-W12NKD
CS-W18NKD, CS-W24NKD
12.5.3 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.
12.5.4 Indoor Fan Motor rpm Abnormal Control
Immediate after the fan motor is started, rpm abnormal control is performed every second.
During fan motor on, if fan motor feedback ≥ 2550 rpm or < 50 rpm continuously for 10 seconds, the fan motor
error counter increased; fan motor is then stopped and restarted. If the fan motor error counter increased to 7,
then air conditioner will stop operation.
then air conditioner will stop operation.
12.6 Outdoor Fan Speed Control
There is only one speed for outdoor fan motor. (Applicable for CU-W7NKD, CU-W9NKD and CU-W12NKD)
There is 2 speeds for outdoor fan motor. Outdoor fan speed can be changed to Hi or Lo according to outdoor
temperature. (Applicable for CU-W18NKD and CU-W24NKD)
For Cooling and Soft Dry operation, when outdoor temperature reaches to 31°C (Hi-speed), 29°C (Lo-speed).
(Applicable for CU-W18NKD and CU-W24NKD)
For heating operation, when outdoor temperature reaches to 13.5°C (Hi-speed), 15.5°C (Lo-speed). (Applicable
for CU-W18NKD and CU-W24NKD)
When 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.
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12.7 Vertical Airflow Direction Control
12.7.1 Auto
Control
(Cooling and Soft Dry Operation condition)
When the vertical airflow direction is set to Auto using the remote control, the louver swings up and down as
shown in the diagram.
When stops operation using the remote control, the discharge vent is reset and stops 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.
For CS-W7NKD, CS-W9NKD, CS-W12NKD
For CS-W18NKD and CS-W24NKD
(Heating Operation condition)
When the piping air temperature reaches 38°C, the louver is changed from upper to lower limit. When the piping
air temperature falls 35°C, the louver is changed from lower to upper limit.
For CS-W7NKD, CS-W9NKD, CS-W12NKD
50°
Closing
position
/ 140°
position
/ 140°
Lower limit for heating mode/65°
Horizontal
Upper limit/15°
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For CS-W18NKD and CS-W24NKD
12.7.2 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.
(Cooling and Soft Dry Operation condition)
For CS-W7NKD, CS-W9NKD and CS-W12NKD
(Cooling and Soft Dry Operation condition)
For CS-W7NKD, CS-W9NKD and CS-W12NKD
For CS-W18NKD and CS-W24NKD
(Heating Operation condition)
For CS-W7NKD, CS-W9NKD and CS-W12NKD
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