U2" Power Supply Insufficient Or Instantaneous Failure - Daikin VRV III-S RXYMQ36 48PVJU Service Manual

SiUS34-907
U2
3.37 " " Power Supply Insufficient or Instantaneous Failure
U2
Remote
Controller
Display
Applicable RXYMQ36 · 48PVJU
Models
Method of
Detection of voltage of main circuit capacitor built in the inverter and power supply voltage.
Malfunction
Detection
Malfunction
When the voltage aforementioned is not less than 780V or not more than 320V, or when the
Decision current-limiting voltage does not reach 200V or more or exceeds 740V
Conditions
 Power supply insufficient
Supposed
 Instantaneous power failure
Causes
 Open phase
 Defect of outdoor control PCB
 Main circuit wiring defect
 Faulty compressor
 Faulty fan motor
 Faulty connection of signal cable
Troubleshooting
Troubleshooting by Indication on the Remote Controller
175