Actron air fault codes

The table below provides an explanation of error codes that can be displayed by the air conditioners produced by the Australian company ActronAir. In particular, there are tables explaining fault codes for the ESP Unit, as well as for the controllers from the following ranges: the M Series (AM24 and AM7), C Series (C7-1), D Series 24 Hour (AECSN) and 7 Day (AEC7N).

Actron air conditioner ESP Unit Error Fault Codes

Outdoor CPUWall ControllerFault/Function
0-Cooling Mode
1-Heating Mode
2-Heating compressor run time >20mins
3-Heating Defrost
4LOW speed flashes
every 30s
Over 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

Actron air conditioner M Series (AM24 and AM7) Controller Error Fault Codes


OUTDOOR
CPU
AM24 Wall
Control
AM7 Wall
Control
Fault/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
7 E7 E7Fault: Outdoor coil sensor (open circuit)
8 E7 E7Fault: 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.

Actron air conditioner Fault Codes C Series (C7-1) Controller


OUTDOOR
CPU
C7 Wall
Control
Fault/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
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

Actron air D Series 24 Hour (AECSN) and 7 Day (AEC7N) Controller Error Fault Codes

OUTDOOR
CPU
24 Hour
(AECSN) Wall
Control
7 Day
(AEC7N) Wall
Control
Fault/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
9heat/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.

Notes:
– Faults may not be displayed on the wall control until the fault occurs several times.
– Phase error will be indicated by a red light on the 3-phase relay.
– Phase correction must be applied to the incoming supply side.