Daikin Super Multi Plus E-Series - Troubleshooting for RA Indoor Unit; Indoor Unit PCB Abnormality

Troubleshooting for RA Indoor Unit SiEN18-622
322 Troubleshooting
4. Troubleshooting for RA Indoor Unit
4.1 Indoor Unit PCB Abnormality
Remote Control
Display
A1
Method of
Malfunction
Detection
Evaluation of zero-cross detection of power supply by indoor unit.
Malfunction
Decision
Conditions
When there is no zero-cross detection in approximately 10 continuous seconds.
Supposed
Causes
 Faulty indoor unit PCB
 Faulty connector connection
Troubleshooting
Note: Connector Nos. vary depending on models.
Control connector
(R1400)
Be sure to turn off power switch before connect or disconnect connector, or parts
damage may be occurred.
Connector connection check
(note).
Is it normal?
Correct connections.Replace
Replace PCBs.
YES
NO
Caution
Model Type Connector No.
Wall Mounted Type Terminal strip~Control PCB
Duct Connected Type Terminal strip~Control PCB
Floor / Ceiling Suspended Dual Type S37
Floor Standing Type Control PCB : S7, S201, S203
Power Supply PCB : S8, S202, S204