Panasonic CS-E12GKEW, Service Manual

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12.2.2.3. Freeze Prevention Control
1. When indoor heat exchanger temperature is lower than 0
°
C continuously for 6 minutes, compressor will stop operating.
2. Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 13
°
C.
3. At the same time, indoor fan speed in20 rpm compared to its normal operation.
4. If indoor heat exchanger temperature is higher than 13
°
C for 5 minutes, the fan speed will return to its normal operation.
12.2.3. Protection Control For Heating Operation
12.2.3.1. Intake Air Temperature Control
Compressor will operate at Max freq. if either one of the below conditions occur:
1. When the indoor intake air temperature is 30
°
C or above.
12.2.3.2. Outdoor Air Temperature Control
The Max current value is regulated in accordance to the outdoor air temperature as shown in the below figures.
12.2.3.3. Overload Protection Control
The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown in below figures.