37MGRA PC 10 (ODU low AC voltage protection)/ PC 11 (ODU main control board DC bus high voltage protection)/ PC 12 (ODU main control board DC bus high voltage protection /341 MCE error) Diagnosis and Solution

37MGRA Diagnostic Codes

Diagnostic codes covered

PC 10, PC 11, PC 12

Description: Abnormal increases or decreases in voltage are detected by checking the specified voltage detection circuit. Recommended parts to prepare: Power supply wires, IPM module board, Outdoor PCB, Bridge rectifier, PFC circuit or reactor Troubleshooting and repair:

Troubleshooting workflow

PC 10 (ODU low AC voltage protection)/ PC 11 (ODU main control board DC bus high voltage protection)/ PC 12 (ODU main control board DC bus high voltage protection /341 MCE error) Diagnosis and Solution workflow
PC10 (ODU low AC voltage protection)/ PC11 (ODU main control board DC bus high voltage protection)/ PC12 (ODU main control board DC bus high voltage protection /341 MCE error) Diagnosis and Solution workflow

Related diagnostic checks

Workflow source: original 37MGRA-02SM service-manual PDF. Error-code names cross-checked against 37MGRA-04SI.

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