Actron Air Conditioners Error Codes

ActronAir ESP Error Codes

Outdoor CPUWall ControllerFault/Function
0-Cooling Mode
1-Heating Mode
2-Heating compressor run time >20mins
3-Heating Defrost
4LOW speed flashes every 30sOver Heat or Anti-Freeze Protection mode (Reduced Capacity Mode)
5-Heating mode - indoor coil pre-heat
6E6Fault discharge temperature
7E7Fault outdoor coil sensor (open or closed circuit)
8E8Fault outdoor discharge sensor (open or closed circuit)
9E9High or Low Pressure/Phase error (3 phase models only)
-E2Fault indoor coil out sensor
-E3Fault room sensor(s) (open or closed circuit)
-E4Fault indoor coil sensor (open or closed circuit)
E5Communication Fault

ActronAir M Series Error Codes

OUTDOOR CPUAM24 Wall ControlAM7 Wall ControlFault/Function
0--Cooling Mode
1--Heating Mode
2--Heating Mode after 20 minutes of compressor run time. Defrost Standby.
3--Heating Mode De-ice cycle
5--Heating Mode Indoor coil pre-heat after defrost
7E7E7Fault: Outdoor coil sensor (open circuit)
8E7E7Fault: Outdoor coil sensor (closed circuit)
9E9E9Fault: High or Low pressure tripped (Note: Some models have discharge sensor, which will also give the same fault code.)
-E5E5Communication error between outdoor and indoor.

ActronAir C Series Error Codes

OUTDOOR CPUC7 Wall ControlFault/Function
0Cooling Mode
1Heating Mode
2Heating Mode after 20 minutes of compressor run time. Defrost Standby.
3Heating Mode De-ice cycle
5Heating Mode Indoor coil pre-heat after defrost
7E7Fault: Outdoor coil sensor open circuit
8E7Fault: Outdoor coil sensor short circuit
9E9Fault: High or Low pressure tripped (Note: Some models have discharge sensor, which will also give the same fault code.)
-E5Communication error between outdoor and indoor.

ActronAir AECSN AEC7N Error Codes

OUTDOOR CPU24 Hour (AECSN) Wall Control7 Day (AEC7N) Wall ControlFault/Function
0--Cooling Mode
1--Heating Mode
2--Heating Mode after 20 minutes of compressor run time. Defrost Standby.
3--Heating Mode De-ice cycle
5--Heating Mode Indoor coil pre-heat after defrost
77E1Fault: Outdoor coil sensor open circuit
87E1Fault: Outdoor coil sensor closed circuit
99 (heat/cool flash)E2Fault: High or Low pressure tripped (Note: Some models have discharge sensor, which will also give the same fault code.)
--E5Communication error between outdoor and indoor.