Signal Transmission Error (Between Indoor Unit And Outdoor Unit) - Daikin FVXG25K2V1B Service Manual
Inverter pair floor standing type
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Also See for FVXG25K2V1B:
- Service manual (243 pages) ,
- Operation manual (42 pages) ,
- Installation manual (28 pages)
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Troubleshooting
4.9
Signal Transmission Error (between Indoor Unit and
Outdoor Unit)
U4
Error Code
Method of Error
The data received from the outdoor unit in signal transmission is checked whether it is normal.
Detection
Error Decision
The data sent from the outdoor unit cannot be received normally, or the content of the data is
abnormal.
Conditions
Supposed
Causes
76
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
Short circuit inside the fan motor winding
Defective indoor unit PCB
Disturbed power supply waveform
SiBE061121_A
Service Diagnosis
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- Specifications
- Rxg50K3V1B
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Table of Contents
Troubleshooting
