Indoor Unit Pcb Abnormality - Daikin F-Series Service Manual

SiEN12-710A
4.2

Indoor Unit PCB Abnormality

A1
Remote Control
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
" Faulty indoor unit PCB
Causes " Faulty connector connection
Troubleshooting
Note: Connector Nos. vary depending on models.
Wall Mounted Type
Duct Connected Type
Service Diagnosis
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
Terminal strip~Control PCB
Troubleshooting
Correct connections.
Replace PCBs.
(R7130)
109