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12.6 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 2.5°C or less for continuous 2 minutes, compressor will stop and restart
automatically.
Time Delay Safety Control is activated before the compressor restart.
This is to prevent compressor from rotate reversely when there is an instantaneous power failure.
If this condition happens continuously for 5 times within 50 minutes, unit will turns off with POWER LED blinks.
The 5 times counter can be reset when either one of the following condition happen:
- Unit is OFF by remote control or AUTO OFF/ON button.
- Indoor intake temperature - indoor piping temperature >5°C for 1 minute or more.
The unit could be ON by pressing OFF/ON button at remote control but the POWER LED will continue blinking.
POWER LED blinking will be reset if:
- Indoor intake temperature – Indoor piping temperature >5°C for 1 minute.
- Power supply reset.
12.7 Dew Prevention control
To prevent dew formation at indoor unit discharge area.
This control will be activated if:
- Cooling mode.
- Remote Control setting temperature is less than 25°C.
- Fan speed is at CLo.
- Room temperature is constant (±1°C) for 30 minutes.
- Compressor is continuously running.
Fan speed will be adjusted accordingly in this control.
- Fan speed will be increased slowly.
Dew prevention stop condition
- Remote control setting temperature is more than 25°C.
- Fan speed is not set to CLo.
12.8 Odor Cut Control
To reduce the odor released from the unit.
- Start Condition
- AUTO FAN Speed is selected during COOL operation.
- During freeze prevention control and timer preliminary operation, this control is not applicable.
- Control content
- Depends on compressor conditions:
1. Compressor OFF → Compressor ON.
The indoor unit fan stops temporarily and then starts to blow at minimum airflow for 30 seconds.
2. Compressor ON → Compressor OFF.
The indoor unit fan stops for 90 seconds and then blows at minimum airflow for 20 seconds.
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