Signal Transmission Error (Between Indoor Unit And Outdoor Unit) - Daikin Super Multi NX FFQ25B8V1B Service Manual

Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series
5.6 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
abnormal.
Decision
Conditions
Supposed
Causes
316
Defective outdoor unit PCB
Defective indoor unit PCB
Wiring error
Disturbed power supply waveform
Breaking of the connection wires between the indoor and outdoor units (wire No. 3)
SiBE121021_C
Service Diagnosis