Panasonic WH-SHF09F3E5 Service Manual page 116

16.5.30 Indoor Water Inlet Temperature Sensor Abnormality (F37)
Malfunction Decision Conditions:
During startup and operation of heating, the temperatures detected by the indoor water inlet temperature sensor
are used to determine sensor error.
Malfunction Caused:
1 Faulty connector connection.
2 Faulty sensor.
3 Faulty indoor unit PCB (main).
Abnormality Judgment:
Continue for 5 seconds.
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