Signal Transmission Error (Between Indoor Unit And Outdoor Unit) - Daikin FTXS20K2V1B Service Manual
Inverter pair wall mounted type k-series
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Also See for FTXS20K2V1B:
- Service manual (131 pages) ,
- Operation manual (44 pages) ,
- Installation manual (18 pages)
Table of Contents
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SiBE041134
4.8
Signal Transmission Error (between Indoor Unit and
Outdoor Unit)
U4
Remote
Controller
Display
Method of
The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is
checked whether it is normal.
Malfunction
Detection
Malfunction
The data sent from the outdoor unit cannot be received normally, or the content of the data is
Decision
abnormal.
Conditions
Supposed
Causes
Service Diagnosis
Reduction of power supply voltage
Wiring error
Breaking of the connection wires between the indoor and outdoor units (wire No. 3)
Defective outdoor unit PCB
Defective indoor unit PCB
Disturbed power supply waveform
Troubleshooting
77
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Troubleshooting
