Power Supply Insufficient Or Instantaneous Failure; U2" Power Supply Insufficient Or Instantaneous Failure - Daikin VRV - WII Service Manual

Troubleshooting by Indication on the Remote Controller
2.39 "U2"

Power Supply Insufficient or Instantaneous Failure

U2
Remote
Controller
Display
Applicable RWEYQ60, 72, 84MTJU
Models
Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage.
Malfunction
Detection
Malfunction When the capacitor above only has a voltage of 190V or less.
Decision
Conditions
Supposed
Causes
210
Abnormal power supply voltage
Instantaneous power failure
Open phase
Faulty inverter PCB
Faulty control PCB
Faulty compressor
Faulty wiring in the main circuit
Faulty connection of signal line
SiUS30-604
Troubleshooting