SiAF332111E Troubleshooting by Error Code
Part 6 Service Diagnosis 265
5.41 Inverter Circuit Abnormality
Applicable
Models
All outdoor unit models
Error Code L1
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.
Error of current sensor during synchronous operation.
IPM failure.
Supposed
Causes
IPM failure
Current sensor failure
Drive circuit failure
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