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• The current fan speed will change to freeze prevention speed after 70 seconds compressor on. The fan speed will be increased
according to the indoor pipe temperature the figure below.
• Restart control (Time Delay Safety Control) will be applied in this control if the recovery time is too short.
13.6. 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 TIMER indicator 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 minutes or more.
- Operation mode change.
• The unit could be ON by pressing OFF/ON button at remote control but the TIMER LED will continue blinking.
• TIMER LED blinking will be reset if:
- Indoor intake temperature - Indoor piping temperature >5°C for 1 minutes or more.
- Power supply reset.
13.7. 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 60 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.
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