Panasonic CS-PA7CKE, Service Manual

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Deice operation is to protect the outdoor unit from freezing.
•
Normal Deice Operation
Deicing starts 30 minutes after heating mode operation or 60 minutes after the latest deicing operation.If temperature of
outdoor piping,tested by TRS,falls to -3°C (TRS OFF) or below for continuously 50 seconds,deicing operation starts.
•
Overload Deicing Operation
During heating operation, if the accumulative stopping time of outdoor fan reaches 60 minutes, deicing operation will start
1 minute after compressor starts.
•
Deicing operation ends under conditions below
1. After 12 minutes.
2. Temperature of outdoor unit rises to 4°C.
3. Because of time delay (Td),deicing operation will not end immediately.
•
Once deicing starts, it will not end within 60 seconds.
•
When deicing operation ends, compressor will stop for 30 seconds,and 4-way valve remains at cooling mode operation for
10 seconds.
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