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Hitachi Air Conditioning Error Codes

  1. Error Code: 01 Description: Indoor unit coil outlet temperature sensor error
  2. Error Code: 02 Description: Indoor unit coil inlet temperature sensor error
  3. Error Code: 03 Description: Outdoor unit coil outlet temperature sensor error
  4. Error Code: 04 Description: Outdoor unit coil inlet temperature sensor error
  5. Error Code: 05 Description: Outdoor unit ambient temperature sensor error
  6. Error Code: 06 Description: Outdoor unit discharge temperature sensor error
  7. Error Code: 07 Description: Suction temperature sensor error
  8. Error Code: 08 Description: Indoor unit fan motor error
  9. Error Code: 09 Description: Outdoor unit fan motor error
  10. Error Code: 10 Description: Compressor error (overload, lock)
  11. Error Code: 11 Description: High pressure switch error
  12. Error Code: 12 Description: Low pressure switch error
  13. Error Code: 13 Description: Indoor/outdoor communication error
  14. Error Code: 14 Description: EEPROM error (indoor unit PCB, outdoor unit PCB)
  15. Error Code: 15 Description: Inverter error
  16. Error Code: 16 Description: Overcurrent protection
  17. Error Code: 17 Description: Power supply error (voltage, frequency)