Daikin Aurora Series, Service Manual, Page: 244 / 333

Troubleshooting by Error Code SiUS341802E
231 Service Diagnosis
2.44 Inverter PCB Abnormality
Error Code
L1
Applicable
Models
All outdoor unit models
Method of Error
Detection
„
Detect according to current value detected during the output of waveform before compressor
startup
„
Detect according to current value detected with the current sensor during synchronous
operation for startup
Error Decision
Conditions
„
When overcurrent (OCP) flows during the output of waveform
„
When the current sensor error during synchronous operation
„
When IPM error occurs
Supposed
Causes
„
Inverter PCB
„
IPM failure
„
Current sensor failure
„
Drive circuit failure
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