37MGRA EH 00/ EH 0A / EC 51 (EEPROM Malfunction Error Diagnosis and Solution)

37MGRA Diagnostic Codes

Diagnostic codes covered

EH 00(EH00), EH 0A(EH0A), EC 51(EC51)

  • EH 00 – IDU EEPROM Malfunction
  • EH 0A – IDU EEPROM Parameter Error
  • EC 51 – ODU EEPROM Parameter Error

Description: Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip. Recommended parts to prepare: Indoor PCB, Outdoor PCB Troubleshooting and repair:

Troubleshooting workflow

EH 00/ EH 0A / EC 51 (EEPROM Malfunction Error Diagnosis and Solution) workflow
EH00/ EH0A / EC51 (EEPROM Malfunction Error Diagnosis and Solution) workflow

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

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