Panasonic CS-RE18PKR Service Manual page 99

15.5.28 F97 (Compressor Overheating)
Malfunction Decision Conditions

During operation of cooling and heating, when compressor tank temperature data (112°C) is detected by the
compressor tank temperature sensor.
Malfunction Caused

Faulty compressor tank temperature sensor.

2/3 way valve closed.

Refrigerant shortage (refrigerant leakage).

Faulty outdoor unit PCB.

Faulty compressor.
Troubleshooting
99