37MGRA EC 55 (ODU IPM module temperature sensor malfunction diagnosis and solution)

37MGRA Diagnostic Codes

Diagnostic codes covered

EC 55

Description: If the sampling voltage is 0V or 5V, the LED displays the failure code. Recommended parts to prepare: IPM module PCB Connection wires Sensors Outdoor main PCB

Troubleshooting workflow

EC 55 (ODU IPM module temperature sensor malfunction diagnosis and solution) workflow
EC55 (ODU IPM module temperature sensor malfunction 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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