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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.
(For A9KKD and A12KKD)
(For A18KKD, A24KKD and A28KKD)
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.
12.6 Outdoor Fan Speed Control
• There is only one speed for outdoor fan motor. (Applicable for CU-A9KKD and CU-A12KKD)
• 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-A18KKD, CU-A24KKD and CU-A28KKD).
• For Cooling and Soft Dry operation, when outdoor temperature reaches to 31°C (Hi-speed), 29°C (Lo-speed).
(Applicable for CU-A18KKD, CU-A24KKD and CU-A28KKD).
• For heating operation, when outdoor temperature reaches to 13.5°C (Hi-speed), 15.5°C (Lo-speed). (Applicable
for CU-A18KKD, CU-A24KKD and CU-A28KKD).
• 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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