Momentary Power Failure During Test Operation - Daikin VRV RXYMQ-A Series Service Manual

SiME332106E

5.40 Momentary Power Failure during Test Operation

Applicable RXYMQ4-6AYFK
Models
L2
Error Code
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  Defective wiring
 Defective outdoor unit main PCB
Causes
Troubleshooting
Part 6 Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Error
recurs after
NO
turning OFF the power
and ON again.
YES
Any
disconnection
of connectors, loose
YES
contact or wiring disconnection
in the transmission wirings to
the outdoor unit main
PCB?
NO
Troubleshooting by Error Code
Temporary problem
Correct any fault.
Replace the outdoor unit
main PCB (A1P).
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