Carrier Split AC Error Codes

E7 Carrier Split AC E7 on a Carrier AC indicates a mode conflict — typically on multi-zone systems … P1 Carrier Split AC P1 on a Carrier AC means the high-pressure switch on the refrigerant line has … P4 Carrier Split AC P4 on a Carrier AC means the discharge pipe temperature sensor has detected … E5 Carrier Split AC E5 on a Carrier AC means the outdoor ambient temperature thermistor has a … E6 Carrier Split AC E6 on a Carrier AC means the refrigerant circuit pressure has exceeded the safe … F6 Carrier Split AC F6 on a Carrier AC means the drain pump motor or the drainage float switch has … 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 … E3 Carrier Split AC E3 on a Carrier AC means the discharge pipe temperature — the hot gas line … E4 Carrier Split AC E4 on a Carrier AC means the indoor evaporator coil temperature has dropped to … 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 … HC Carrier Split AC HC on a Carrier AC means the inverter drive has detected an overcurrent …