Panasonic WH-SDF09C3E5 Service Manual page 105

Air-to-water heatpump
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17.5.10 Indoor-Control Panel Communication Abnormality (H76)
Malfunction Decision Conditions:
During standby and operation of cooling and heating, indoor-control panel error occur.
Malfunction Caused:
4
Faulty connector connection.
5
Faulty control panel.
6
Faulty indoor unit PCB (main).
105

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