Actron Air Conditioner ESP Error Codes

0 Cooling Mode

1 Heating Mode

2 Heating compessor run lime >20mins

3 Hleating Defrost

4 Low speed (flashes every 30 seconds) Over Heat or Anti Freeze protection mode (reduced capacity mode)

5 Heating Mode - indoor coil pre-heat

6 E6 Fault discharge temperature

7 E7 Fault outdoor coil sensor (open or closed circuit)

8 E8 Fault outdoor discharge sensor (open or closed circuit)

9 E9 High or low pressure - phase error (3 phase models only)

E2 Fault indoor coil out sensor

E3 Fault room sensor(s) (open or closed circuit)

E4 Fault indoor coil sensor (open or closed circuit)

E5 Communication fault

1 Heating Mode

2 Heating Mode after 20 minutes of compressor run time

3 Heating Mode de-ice cicle

5 Heating Mode indoor coil pre-heat after defrost

7 E7 Fault outdoor coil sensor (open circuit)

8 E8 Fault outdoor coil sensor (closed circuit)

9 E9 Fault high or low pressure tripped (some models have discharge sensor, which will also give the same fault code)

E5 Communication error between outdoor and indoor