Panasonic WH-SXH09D0E8 Service Manual page 70

Air-to-water heatpump indoor unit outdoor unit
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16.5.24 Outdoor Discharge Pipe Temperature Sensor Abnormality (F40)
Malfunction Decision Conditions:
During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe
temperature sensor are used to determine sensor error.
Malfunction Caused:
1
Faulty connector connection.
2
Faulty sensor.
3
Faulty outdoor unit PCB (main).
Abnormality Judgment:
Continue for 5 seconds.
70

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