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 wrong wiring.

Indoor unit-outdoor unit signal transmission error due to breaking of wire in the connection wires between the indoor and outdoor units.

Indoor unit-outdoor unit signal transmission error due to disturbed power supply waveform.

Troubleshooting

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Panasonic CS-CE9JKE specifications Self-diagnosis Method, 15.4.1. H11 Indoor/Outdoor Abnormal Communication