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Six Different Error Codes for air conditioners

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     Error codes are a helpful feature in mini split systems as they allow homeowners to quickly identify and address any issues with the system. These codes serve as a warning that something is wrong and if left unaddressed, the problem could lead to system failure. It's important not to ignore error codes, even if the system seems to be functioning properly, as they are an indication that maintenance or repairs are needed. By familiarizing yourself with the codes and their meanings, homeowners can quickly assess the situation and take the necessary steps to fix the problem.

    1. EO – communication fault (indoor/outdoor)
    2. EC – outdoor communication fault
    3. E1 – sensor for room temperature
    4. E2 – coil temperature sensor (indoor)
    5. E3 – coil temperature sensor (outdoor)
    6. E4 – abnormal system
    7. E5 – wrong model configuration
    8. E6 – indoor fan motor
    9. E7 – outdoor sensor for temperature
    10. E8 – temperature sensor for exhaust
    11. E9 – module and drive fault/intelligent power
    12. EF – fan motor module (outdoor)
    13. EA – current sensor fault
    14. EE – EEPROM
    15. EP – temperature switch fault
    16. EU – sensor fault (voltage)
    17. EH – intake temperature sensor
    18. P1 – protection from over or undervoltage
    19. P2 – protection from overcurrent
    20. P4 – exhaust overtemperature protection
    21. P5 – subcooling
    22. P6 – overheating protection (cooling mode)
    23. P7 – overheating protection (heating mode)
    24. P8 – protection for overtemperature and under temperature (outdoor)
    25. P9 – software control (drive protection)
    26. P0 – hardware control (module protection)
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