
Control Specification SiBE04-624_B
62 Function and Control
2.9 Outdoor Fan Control
1. Fan ON control to cool down the electrical box
The outdoor fan is turned ON when the electrical box temperature is high while the compressor
is OFF.
2. Fan OFF control while defrosting
The outdoor fan is turned OFF while defrosting.
3. Fan OFF delay when stopped
The outdoor fan is turned OFF 60 seconds after the compressor stops.
4. Fan ON/OFF control when operation starts / stops
The outdoor fan is turned ON when the operation starts. The outdoor fan is turned OFF when
the operation stops.
5. Fan ON/OFF control during cooling operation
The rotation speed of the outdoor fan is fixed.
The outdoor fan is turned OFF when the outdoor temperature drops below 0°C.
6. Fan control during heating operation
The rotation speed of the outdoor fan is fixed.
2.10 Liquid Compression Protection Function
Outline In order to obtain the dependability of the compressor, the compressor is stopped according to
the outdoor temperature and the outdoor heat exchanger temperature.
Detail Outdoor temperature and outdoor heat exchanger temperature
Cooling or dry operation
Compressor on
Outdoor temperature < 10°C
Outdoor heat exchanger temperature < 17°C
If all of these are fulfilled for 11 minutes, the compressor stops, the system is reset and restarted
after 3 minutes.
Outdoor temperature only
Cooling or dry operation
Not in forced cooling operation
Outdoor temperature < 0°C
If all of these are fulfilled, the compressor stops, the system resumes operation when the
outdoor temperature rises above 0°C.
Cooling
28 class 800 rpm
42 class 850 rpm
50 class 850 rpm
Heating
28 class 750 rpm
42 class 760 rpm
50 class 810 rpm
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