Power Supply Voltage Abnormality - Daikin SkyAir RZQ-P Series Service Manual

Troubleshooting by Indication on the Remote Controller

3.38 Power Supply Voltage Abnormality

U2
Remote
Controller
Display
Applicable RZR, RZQ
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 abnormal voltage of main circuit capacitor built in the inverter and abnormal power
Conditions supply voltage are detected
 Power supply insufficient
Supposed
 Instantaneous power failure
Causes
 Defective outdoor unit fan motor
 Defective outdoor control PCB (A1P)
 Defective main circuit wiring
136
SiUS28-902_B
Service Diagnosis