Signal Transmission Error (Between Indoor Unit And Outdoor Unit) - Daikin FLKS25BAVMB Service Manual
Inverter pair floor / ceiling suspended dual type
flk(x)s-ba series
Hide thumbs
Also See for FLKS25BAVMB:
- Service manual (232 pages) ,
- Technical data manual (16 pages) ,
- Operation manual (32 pages)
Table of Contents
Advertisement
Troubleshooting
4.8
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
Conditions
abnormal.
Supposed
Causes
74
Power supply voltage is not as specified.
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
SiBE05-722EE
Service Diagnosis
Hide quick links:
Advertisement
Table of Contents
Troubleshooting
