Power Supply Insufficient Or Instantaneous Abnormality - Daikin RXSQ24TAVJU Service Manual

Troubleshooting by Error Code

4.49 Power Supply Insufficient or Instantaneous Abnormality

U2
Error Code
Applicable
All outdoor units
Models
Method of Error The main circuit capacitor voltage of the inverter and the power supply voltage is checked.
Detection
Error Decision The main circuit capacitor of the tested inverter has abnormal voltage or the power supply voltage
Conditions is abnormal.
Supposed
Causes
223
Insufficient power supply
Instantaneous power failure
Defective outdoor fan motor
Defective outdoor unit PCB
SiUS331708EA
Service Diagnosis