☆ 2 times X E1 Indoor / outdoor units communication error times X E2 Zero-crossing signal detection error times X E3 Indoor fan speed has been out of control Indoor room temperature sensor T1 open circuit or short ☆ 5 times X E4 circuit Evaporator coil temperature sensor T2 open circuit or ☆ 6 times X E5 short circuit times X EC Refrigerant leakage detection times O F0 Overload current protection Outdoor ambient temperature sensor T4 open circuit or times O F1 short circuit Condensercoil temperature sensor T3 open circuit or times O F2 short circuit Compressor discharge temperature sensor T5 open 4 times O F3 circuit or short circuit times O F4 Outdoor unit EEPROM parameter error times O F5 Outdoor fan speed has been out of control times ☆ P0 IPM malfunction or IGBT over-strong current protection times ☆ P1 Over voltage or over low voltage protection High temperature protection of compressor top times ☆ P2 diagnosis and solution(only for 9k,12k models) 4 times ☆ P3* Outdoor ambient temperature too low. times ☆ P4 Inverter compressor drive error times ☆ P5 Indoor units mode conflict (multi-zone ONLY) O（light）X（off）☆（flash） *P3 1) In heating mode, when the outdoor temperature is lower than -25 for 1 hour, the indoor unit display error code P3. 2) If the OUTDOOR temperature is higher than -22c for 10 minutes and compressor stop for 1 hour OR outdoor temperature is higher than -5C for 10 minutes, then the unit will return to work. 9.2 Outdoor unit error display(TBD) 9.3 Diagnosis and Solution 9.3.1EEPROM parameter error diagnosis and solution(E0/F4) E0/F4 Error Code Malfunction decision Indoor or outdoor PCB main chip does not receive feedback conditions from EEPROM chip. Supposed causes Installation mistake
☆ 2 times X E1 Indoor / outdoor units communication error times X E2 Zero-crossing signal detection error times X E3 Indoor fan speed has been out of control ☆ 5 times X E4 Indoor room temperature sensor T1 open circuit or short circuit ☆ 6 times X E5 Evaporator coil temperature sensor T2 open circuit or short circuit times X EC Refrigerant leakage detection times O F0 Overload current protection times O F1 Outdoor ambient temperature sensor T4 open circuit or short circuit times O F2 Condensercoil temperature sensor T3 open circuit or short circuit times O F3 Compressor discharge temperature sensor T5 open circuit or short circuit times O F4 Outdoor unit EEPROM parameter error times O F5 Outdoor fan speed has been out of control times ☆ P0 IPM malfunction or IGBT over-strong current protection times ☆ P1 Over voltage or over low voltage protection times ☆ P2 High temperature protection of compressor top diagnosis and solution(only for 9k,12k models) times ☆ P3* Outdoor ambient temperature too low. times ☆ P4 Inverter compressor drive error times ☆ P5 Indoor units mode conflict (multi-zone ONLY) O（light）X（off）☆（flash） *P3 1) In heating mode, when the outdoor temperature is lower than -25 for 1 hour, the indoor unit display error code P3. 2) If the OUTDOOR temperature is higher than -22c for 10 minutes and compressor stop for 1 hour OR outdoor temperature is higher than -5C for 10 minutes, then the unit will return to work. 9.2 Outdoor unit error display(TBD) 9.3 Diagnosis and Solution 9.3.1EEPROM parameter error diagnosis and solution(E0/F4) Error Code E0/F4 Malfunction decision conditions Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip. Supposed causes Installation mistake 4 4
t3_service_manual.docx