Panasonic WH-MDF09C3E8 Service Manual page 83

16.5.5 Water Flow Switch Abnormality (H62)
Malfunction Decision Conditions:
During operation of heating, the water flow detected by the indoor water flow switch is used to determine water
flow error.
Malfunction Caused:
1 Faulty water pump.
2 Water leak in system.
3 Faulty connector connection.
4 Faulty water flow switch.
5 Faulty indoor unit PCB (main).
Abnormality Judgment:
Continue for 10 seconds (but no judgment for 9 minutes after compressor startup/restart).
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