Momentary Power Failure During Test Operation - Daikin REYQ-XA Service Manual

SiUS371901E

3.50 Momentary Power Failure during Test Operation

L2
Error Code
Applicable
All outdoor unit models
Models
Method of Error Momentary power failure is detected by the PCB.
Detection
Error Decision Judgment is made by AC power frequency detection circuit on the outdoor unit main PCB
Conditions
Supposed
Causes
Troubleshooting
Service Diagnosis
Defective wiring
Defective outdoor unit main PCB
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Error
recurs after
turning OFF the power
and ON again.
YES
Any
disconnection
of connectors, loose
contact or wiring
disconnection in the
transmission wirings to the
outdoor unit main
PCB?
NO
NO
YES
Troubleshooting by Error Code
Temporary problem
Correct any fault.
Replace the outdoor unit
main PCB (A1P).
320