Aux air conditioner fault codes

Display modeFault source
E1Plastic temp sensor is abnormal.
PG motor feedback is abnormal
E2Copper temp sensor is abnormal (outdoor)
E3Copper temp sensor is abnormal (indoor)
E4PG motor feedback is abnormal
E6Over-current oprotection
Timing light twinkles 4 times in every 8 secondsPG motor feedback is abnormal
Timing light twinkles 1 times in every 8 secondsPlastic temp sensor is abnormal
PG motor feedback is abnormal
Timing light twinkles 2 times in every 8 secondsCopper temp sensor is abnormal (indoor)
Plastic temp sensor is abnormal
Timing light twinkles 1 times in every 1 secondsCopper temp sensor is abnormal (indoor)
Timing light twinkles 1 times in every 1 secondsCopper temp sensor is abnormal (outdoor)
Timing light twinkles 3 times in every 8 secondsCopper temp sensor is abnormal
Timing light twinkles 6 times in every 8 secondsOver-current oprotection
Timing light twinkles 8 times in every 8 secondsCopper temp sensor is abnormal