Panasonic WH-MDF09C3E8 Service Manual page 89
Air-to-water heatpump system
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Also See for WH-MDF09C3E8:
- Operating instructions manual (76 pages) ,
- Design handbook (132 pages) ,
- Installation manual (90 pages)
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16.5.11 Indoor/Outdoor Abnormal Communication (H90)
Malfunction Decision Conditions:
During operation of heating, the data received from outdoor unit in indoor unit signal transmission is checked
whether it is normal.
Malfunction Caused:
1
Faulty outdoor unit PCB (main).
2
Faulty indoor unit PCB (main).
3
Indoor-outdoor signal transmission error due to wrong wiring.
4
Indoor-outdoor signal transmission error due to breaking of wire in the connection wires between the indoor
and outdoor units.
5
Indoor-outdoor signal transmission error due to disturbed power supply waveform.
Abnormality Judgment:
Continue for 1 minute after operation.
89
- Quick Links:
- Wh-Mdf12C9E8 (Wh-Mdf12C9E8-1)
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