Overload Protection Control; Low Temperature Compressor Oil Return Control; Cold Draught Prevention Control; Deice Operation - Panasonic CS-RZ25VKRW Service Manual

16.3.3

Overload Protection Control


The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown
below.

If the heat exchanger temperature exceeds 60°C, compressor will stop.
16.3.4

Low Temperature Compressor Oil Return Control


In heating operation, if the outdoor temperature falls below -10°C (RZ25 ~ 35VK), -8°C (RZ42 ~ 80VK) when
compressor starts, the compressor frequency will be regulated up to 600 seconds.
16.3.5

Cold Draught Prevention Control


When indoor pipe temperature is low, cold draught operation starts where indoor fan speed will be reduced.
16.3.6

Deice Operation


When outdoor pipe temperature and outdoor air temperature is low, deice operation start where indoor fan motor
and outdoor fan motor stop and operation LED blinks.
OFF
60°C
Frequency Reduce
55°C
Frequency Limited
49°C
Free
Indoor Heat
Exchanger Temp.
113
52°C
46°C