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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
60
- Quick Links:
- Specification
- Indoor Unit
- Error Code Table
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Troubleshooting
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