Troubleshooting by Indication on the Remote Controller
194
3.49
L1
Inverter PCB Abnormality
Remote Controller Display
L1
Applicable Models
VRVIII Series
Method of Error Detection
Error is detected based on the current value during
waveform output before starting compressor.
Error is detected based on the value from current sensor
during synchronous operation when starting the unit.
Error Decision Conditions
Overcurrent flows during waveform output.
Defective current sensor during synchronous operation.
IPM failure.
Supposed Causes
Inverter PCB
z IPM failure
z Current sensor failure
z Drive circuit failure
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