Specifications

Troubleshooting by Remote Controller SiBE341027
152 Service Diagnosis
2.31 Power Supply Insufficient or Instantaneous Failure
Remote
Controller
Display
U2
Applicable
Models
RQYQ-PY1B
Method of Error
Detection
Detection of voltage of main circuit capacitor built in the inverter PCB and power supply voltage.
Error Decision
Conditions
When the voltage aforementioned is not less than 190V.
Supposed
Causes

Power supply insufficient

Instantaneous power failure

Open phase

Defective inverter PCB

Defective outdoor service monitor PCB

Defective compressor

Defective main circuit wiring

Defective fan motor

Defective connection of signal cable