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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.
- EO – communication fault (indoor/outdoor)
- EC – outdoor communication fault
- E1 – sensor for room temperature
- E2 – coil temperature sensor (indoor)
- E3 – coil temperature sensor (outdoor)
- E4 – abnormal system
- E5 – wrong model configuration
- E6 – indoor fan motor
- E7 – outdoor sensor for temperature
- E8 – temperature sensor for exhaust
- E9 – module and drive fault/intelligent power
- EF – fan motor module (outdoor)
- EA – current sensor fault
- EE – EEPROM
- EP – temperature switch fault
- EU – sensor fault (voltage)
- EH – intake temperature sensor
- P1 – protection from over or undervoltage
- P2 – protection from overcurrent
- P4 – exhaust overtemperature protection
- P5 – subcooling
- P6 – overheating protection (cooling mode)
- P7 – overheating protection (heating mode)
- P8 – protection for overtemperature and under temperature (outdoor)
- P9 – software control (drive protection)
- P0 – hardware control (module protection)
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