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13 Protection Control
13.1. Restart Control (Time Delay Safety Control)
• When the thermo-off temperature (temperature which compressor stops to operate) is reached, the compressor stops for 3
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 on again within the period.
• This phenomenon is to balance the pressure inside the refrigerant cycle.
13.2. Freeze Prevention Control
• After compressor starts operation for 4 minutes, the outdoor unit will stop its operation if indoor pipe temperature falls below 2ºC
for 6 minutes.
• After 3 minutes stops, compressor restarts operation if indoor pipe temperature is 3ºC or more.
• This phenomenon is to protect the indoor heat exchanger from freezing and to prevent higher volume of refrigerant in liquid from
returning to the compressor.
13.3. Dew Form Prevention Control
• During Cooling Operation, dew form prevention control activates if:
• Indoor temperature falls between 24ºC and 30ºC.
• Compressor and thermostat is ON.
• Indoor fan speed is Low speed.
• Setting temperature is less than 25ºC.
• During dew form prevention control, the louver is fixed at 30º.
• Fan speed and angle of horizontal louver (vertical airflow angle) will be adjusted accordingly in this control.
- Fan speed will be increased slowly if the unit is in quiet mode but no change in normal cooling mode.
- The angle of horizontal louver will be changed as below figure.
Note:
A = Normal operation angle of rotation
B = Dew prevention angle of rotation
Horizontal Louver Angle
During dew prevention, the horizontal louver angle in Auto-control are as below figure.
During dew prevention, the horizontal louver angle in Manual are as below figure.
Operation Mode Airflow direction auto-control Airflow direction manual control
Cooling, Soft Dry A 3 ~ 27 3, 11, 19, 27
B11 ~ 19 11, 14, 17, 19
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