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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 starts operation, indoor fan will increase fan speed gradually for 
deodorizing purpose. 
3  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. 
 
 
 
12.4.3  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. 
12.4.4  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. 
 
12.5  Outdoor Fan Speed Control 
•  There is only one speed for outdoor fan motor. (Applicable for CU-C9KK, CU-C12KK and CU-C18KK) 
•  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-C24KK and CU-C28KK). 
•  For Cooling and Soft Dry operation, when outdoor temperature reaches to 31°C (Hi-speed), 29°C (Lo-speed). 
(Applicable for CU-C24KK and CU-C28KK). 
•  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. 
 
12.6  Vertical Airflow Direction Control 
12.6.1 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 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-C9KK and CS-C12KK 
 
 
 
 
 
 
 
 
 
 
 
 
 
Upper limit for cooling mode 
and soft dry mode/11° 
22° 
Closing 
position  
/ 135° 
Swing up and down 
Lower limit for cooling mode and 
soft dry mode/33° 
Horizontal