Power Supply Voltage Abnormality - Daikin SkyAir GQI-Eco Series Service Manual

SiBE281013

4.31 Power Supply Voltage Abnormality

U2
Remote
Controller
Display
Applicable RZQG
Models
Method of Error The error is detected according to the voltage of main circuit capacitor built in the inverter and
power supply voltage.
Detection
Error Decision When the voltage of main circuit capacitor built in the inverter and power supply voltage drop or
when the power failure of several tens of ms or more is generated.
Conditions
Supposed
Causes
Service Diagnosis
Drop in power supply voltage
Defective outdoor fan motor
Instantaneous power failure
Defective outdoor unit inverter PCB
Main circuit parts damaged
Troubleshooting by Remote Controller
151