01-29
5. ANTI FREEZING PROTECTION <Cooling / Dry mode>
The compressor frequency is decrease on Cooling and Dry mode when the indoor heat exchanger
temperature sensor detects the temperature lower than Temperature .
Then, the anti-freezing protection is released when it becomes higher than Temperature .
(Table 12 : Anti-freezing Protection Operation / Release Temperature)
Outdoor temperature
Over than 10°C *1
or 12°C
*2
Less than 10°C *1
or 12°C *2
*1. When the temperature rises.
*2. When the temperature drops.
4°C
7°C
13°C
Temperature Temperature
4. PRESSURE OVER RISE PROTECTION <Cooling mode>
When the outdoor unit heat-exchange temperature rises to temperature or greater,
the compressor is stopped and trouble display is performed.
After 3 minutes ST, release of protection.
3. LOW PRESSURE PROTECTION CONTROL <Cooling mode>
When the pressure sensor detected value is 0.68MPaG or less continues for 1minute,
the compressor frequency -8rps.
<After the compressor start-up and 10 minutes has passed>
<After the frequency of the compressor -8rps and 1 minute has passed>
When the detected value becomes more than 0.78MPaG,
this protection is released.
<After the compressor start-up and 1 minute has passed>
The detected value of pressure sensor is 0.02MPaG or less,
continues for 5 minutes, the compressor is stopped.
When the pressure sensor detected value is 0.68MPaG or less,
continues for 1 minute, the compressor continues frequency
-8rps every 1 minute until the detected value becomes
more than 0.68MPaG.
0.78MPaG
0.68MPaG
0.02MPaG
Release of protection
Hold
Compressor stop
-8rps every 1 minute
Pressure
(When continues for 5 minutes)
(Fig 18 : Low pressure protection control)
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