Applicable to inverter air Conditioner Only E8 Indoor fan motor speed out of control E1 In-outdoor unit COMM.checking channel is abnormal E2 Room Temp.sensor checking channel is abnormal E3 pipe TEMP.sensor checking channel is abnormal(T2) E4 pipe TEMP.sensor checking channel is abnormal(T2B) E7 EPPROM Malfuntion EE Water-level alarm Malfuntion Ed Outdoor Malfuntion F3 Indoor twins