Carrier Split AC Error Codes

E1 Carrier Split AC E1 on a Carrier AC means the indoor unit and outdoor unit have lost … E2 Carrier Split AC E2 on a Carrier AC typically indicates a zero-crossing signal error — a problem … F1 Carrier Split AC F1 on a Carrier AC means the indoor ambient temperature sensor (room thermistor) … F2 Carrier Split AC F2 on a Carrier AC means the indoor coil (evaporator pipe) temperature … F3 Carrier Split AC F3 on a Carrier AC means the outdoor ambient temperature sensor (outdoor … F4 Carrier Split AC F4 on a Carrier AC means the outdoor coil (condenser pipe) temperature … F5 Carrier Split AC F5 on a Carrier AC means the outdoor discharge temperature thermistor has a …