Troubleshooting Detail - Daikin FTX25JVEA9 Service Manual

Troubleshooting - Split Type Indoor Unit
1.5

Troubleshooting Detail

1.5.1 Faulty PCB
A1
Remote
Controller
Display
Indoor Unit LED
Display
Method of Evaluation of zero-cross detection of power supply by indoor unit.
Malfunction
Detection
Malfunction When there is no zero-cross detection in approximately 10 continuous seconds.
Decision
Conditions
"
Supposed
"
Causes
Troubleshooting
Note: Connector Nos. vary depending on models.
Control connector......S35 and S26
232
Faulty indoor unit PCB
Faulty connector connection
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Connector connection check
(note).
Is it normal?
YES
NO
Si18-201
Correct connections.
Replace PCBs (1) and/or (2), (3).
(MF001)
Service Diagnosis