Indoor Unit Pcb Abnormality - Daikin FT25CV1A Service Manual

Si01-406
Indoor Unit PCB Abnormality (A1)
4.2
A1
Remote
Controller
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.
Service Diagnosis
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
Model Type
All indoor units
NO
Connector No.
Terminal strip~Control PCB
Troubleshooting
Correct connections.
Replace PCBs.
(R1400)
87