Daikin FTX25JVEA9 Service Manual page 257

Troubleshooting - Split Type Indoor Unit
1.5.10 Signal Transmission Error (Between Indoor Unit and Remote
Controller)
U5
Remote
Controller
Display
Indoor Unit LED A
Display
Note: No LED Display on FTK(X)25/35 J Series.
Method of The data received from the indoor unit in indoor unit-remote controller signal transmission is
checked whether it is normal.
Malfunction
Detection
Malfunction When the data sent from the outdoor unit cannot be received normally, or when the content of
Decision the data is abnormal.
Conditions
"
Supposed
"
Causes
"
"
244
5 3
B
Faulty outdoor unit PCB.
Faulty indoor unit PCB.
Faulty remote controller cable.
Faulty remote controller.
Si18-201
Service Diagnosis