Self-Diagnosis Method - Panasonic CS-E9PKEA Service Manual

15.4 Self-diagnosis Method

15.4.1 H11 (Indoor/Outdoor Abnormal Communication)
Malfunction Decision Conditions
•
During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal
transmission is checked whether it is normal.
Malfunction Caused
•
Faulty indoor unit PCB.
•
Faulty outdoor unit PCB.
•
Indoor unit-outdoor unit signal transmission error due to wiring error.
•
Indoor unit-outdoor unit signal transmission error due to breaking of wire in the connection wires between the
indoor and outdoor units.
Troubleshooting
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