Heating Mode Operation - Panasonic CS-A75KE Service Manual

S-A75KE CU-A75KE / CS-A95KE CU-A95KE / CS-A125KE CU-A125KE
8.3.

Heating Mode Operation

Heating in operation according to Remote Control setting.
Time Delay Safety Control
• When the compressor is stopped by Remote Control, it restarts after 3 minutes when the Remote Control is turned ON.
• When the setting temperature is reached during heating operation, the compressor stops and it will not start for 4 minutes.
30 minutes Time Save Control
• The compressor will start automatically if it has stopped for 30 minutes even if the room temperature is between the compressor
ON temperature and OFF temperature.
Overload Protection Control
• If the temperature of the indoor heat exchanger rises to 51°C, Outdoor Fan stops.
The Outdoor Fan restarts when the indoor heat exchanger temperature falls to 49°C.
• If the indoor heat exchanger becomes 65°C or more, the compressor will stop and restart automatically.
(Time Delay Safety Control - 4 minutes waiting).
Compressor Reverse Rotation Protection Control
• If the compressor is operating continuously for 5 minutes or longer and temperature difference between intake air and indoor
heat exchanger is 5°C or less for 2 minutes, compressor will stop and restart automatically.
(Time Delay Safety Control is valid).
s T = Indoor heat exchanger temperature - intake air temperature.
This is to protect reverse rotation of the compressor when there is a instantaneous power failure.
4-way Valve Control
• 4-way valve always ON during Heating operation. (Except Deicing operation)
• When the unit is switched to "OFF" during Heating operation, 4-way valve stay at Heating position for 5 minutes.
Outdoor Fan Motor Control
• When compressor stops (reaches room temperature), outdoor fan will operate for 30 seconds.
(30 seconds Forced Operation).
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