Error Code EC 56

Indoor Unit

Evap coil outlet temp T2B fail. Interchangeable with EH 65

Solution: TS05-ODU & TS22

Error Code EC 54

Outdoor Unit

Compressor discharge temp sensor TP fail

Solution: TS05-ODU & TS22

Error Code EC 53

Outdoor Unit

Outdoor air temp T4 fail

Solution: TS05-ODU & TS22

Error Code EC 52

Outdoor Unit

Outdoor coil temp T3 fail

Solution: TS05-ODU & TS22

Error Code EC 51

Outdoor Unit

Outdoor unit EEPROM Malfunction

Solution: TS01-ODU & TS16

Error Code EC 50

Outdoor Unit

Open or Short Circuit of Temperature Sensor T3, T4, T5

Error Code EC 07

Outdoor Unit

Outdoor fan speed is operating out of range

Solution: TS04-ODU & TS19