Panasonic WH-SDF07C3E5 Service Manual page 91

Indoor & outdoor unit air-to-water heatpump
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17.5.6. Indoor-Control Panel Communication Abnormality (H76)
Malfunction Decision Conditions:
During standby and operation of heating, indoor-control panel error occur.
Malfunction Caused:
1. Faulty connector connection.
2. Faulty control panel.
3. Faulty indoor unit PCB.
91

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