Indoor Unit Pcb Abnormality - Daikin FTXS30HVJU Service Manual

SiUS04-924
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
 Faulty indoor unit PCB
Supposed
 Faulty connector connection
Causes
Troubleshooting
Note: Connector Nos. vary depending on models.
Wall Mounted Type
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution
the connector, or parts damage may occur.
Connector connection check
(note).
Is it normal?
YES
Model Type
Terminal strip~Control PCB
NO
Connector No.
Troubleshooting
Correct connections.
Replace PCB.
(R7130)
73