Inverter Pcb Abnormality - Daikin VRV II-Q RQYQ8-48PY1B Service Manual

Troubleshooting by Remote Controller

2.20 Inverter PCB Abnormality

L1
Remote
Controller
Display
Applicable RQYQ-PY1B
Models
Method of Error
Detection
Error Decision
Conditions
Supposed
Causes
134
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.
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
Defective outdoor unit PCB (A1P)
•
IPM failure
•
Current sensor failure
•
Defective drive circuit
SiBE341027
Service Diagnosis