U2" Power Supply Insufficient Or Instantaneous Failure - Daikin FCQ18PVJU Service Manual

Troubleshooting by Indication on the Remote Controller
U2
3.36 " " Power Supply Insufficient or Instantaneous Failure
U2
Remote
Controller
Display
Applicable
RZQ18~30PVJU
Models
Method of
Detection of voltage of main circuit capacitor built in the inverter and power supply voltage.
Malfunction
Detection
Malfunction When the abnormal voltage of main circuit capacitor built in the inverter and abnormal power
Decision supply voltage are detected.
Conditions
 Power supply insufficient
Supposed
 Instantaneous power failure
Causes
 Defect of outdoor unit fan motor
 Defect of outdoor control P.C.B. (A1P)
131
SiUS28-902_a
Troubleshooting