Panasonic WH-SDC03H3E5 Service Manual page 167
Air-to-water heatpump
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Also See for WH-SDC03H3E5:
- Menu manual (88 pages) ,
- Operating instructions manual (108 pages) ,
- Service manual (30 pages)
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16.5.22 Indoor/Outdoor Abnormal Communication (H90)
Malfunction Decision Conditions:
During operation of cooling and 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.
167
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