Protection Control For Heating Operation - Panasonic CS-NZ35YKE Service Manual

15.3 Protection Control for Heating Operation

15.3.1 Intake Air Temperature Control
Compressor will operate at limited freq., if indoor intake air temperature is 30°C or above.
15.3.2 Outdoor Air Temperature Control

The Max current value is regulated when the outdoor air temperature rise above 14°C in order to avoid
compressor overloading.
15.3.3 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.
15.3.4 Cold Draught Prevention Control

When indoor pipe temperature is low, cold draught operation starts where indoor fan speed will be reduced.
15.3.5 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 Deice LED ON.
Current Regulated
14°C
Free Within Max Limit
Outdoor air temperature
OFF
60°C
Frequency Reduce
55°C
Frequency Limited
49°C
Free
Indoor Heat
Exchanger Temp.
91
12°C
52°C
46°C