Panasonic WH-TX30B9E8 Service Manual page 34

14.2.5. Flow Adjustment Valve Abnormality (H59)
Malfunction Decision Conditions:
During startup and operation, the valve origin position detected by the water tank flow adjustment valve is used to determine
flow adjustment valve abnormal.
Malfunction Caused:
1. Faulty connector connection.
2. Faulty flow adjustment valve.
3. Faulty water tank unit PCB.
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