Specifications

Troubleshooting by Remote Controller SiBE341027
134 Service Diagnosis
2.20 Inverter PCB Abnormality
Remote
Controller
Display
L1
Applicable
Models
RQYQ-PY1B
Method of Error
Detection

Detect error by current value during waveform output before compressor startup.

Detect error by current sensor value during synchronized operation at the time of startup.
Error Decision
Conditions

When over-current is detected at the time of waveform output before operating the
compressor

When the current sensor error during synchronized operation

When overvoltage occurs in IPM
Supposed
Causes

Defective outdoor unit PCB (A1P)
•
IPM failure
•
Current sensor failure
•
Defective drive circuit