Indoor Unit Pcb Abnormality - Daikin F-Series Service Manual

Troubleshooting
4.2

Indoor Unit PCB Abnormality

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.
Wall Mounted Type 50 / 60 / 71 class
118
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
NO
Connector No.
Terminal strip~Control PCB (indoor unit)
SiBE04-705
Correct connections.
Replace PCBs.
(R1400)
Service Diagnosis