Power Supply Voltage Abnormality - Daikin RZQG71~140L7V1B Service Manual

ESIE12-06

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
Detection power supply voltage.
Error Decision
When the voltage of main circuit capacitor built in the inverter and power supply voltage drop or
Conditions when the power failure of several tens of ms or more is generated.
Supposed
 Drop in power supply voltage
Causes  Defective outdoor fan motor
 Instantaneous power failure
 Defective outdoor unit inverter PCB
 Main circuit parts damaged
Service Diagnosis
Troubleshooting by Remote Controller
227