Panasonic CS-A73KR Service Manual page 30

- If use Manual Fan Speed,
operate with setting Fan Speed.
Heating Operating Time Diagram
Deicing Control
Deice starts to prevent frosting at outdoor heat exchanger.
- Normal Deicing
Deice operations detection commences after 30 minutes of
Heating operation starts or 60 minutes after previous deice
operation. If the TRS (Thermal Reed Switch) senses the outdoor
piping temperature drops to -3°C (TRS CLOSE) or less for 50 sec.
continuously during compressor is in operation, deice will start.
at above diagram will
30