Actron AC Error Codes and Troubleshooting

Actron AC Maintenance Dubai

In the usual event that a fault occurs with the Air Conditioner and the microprocessor will diagnose the fault (where possible) and display a fault code on the wall controller. The 7 Day Controller will display a code beginning with E (Eg E2) The 24 Hr Controller will display:

Actron AC Fault Codes:

Actron air conditioner ESP Unit Error Fault Codes

OUTDOOR CPU WALL CONTROLLER FAULT/FUNCTION
0 Cooling Mode
1 Heating Mode
2 Heating compressor run time >20mins
3 Heating Defrost
4 LOW speed flashes 
every 30s
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

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 E7 Fault: Outdoor coil sensor (open circuit)
8 E7 E7 Fault: Outdoor coil sensor (closed circuit)
9 E9 E9 Fault: High or Low pressure tripped (Note: Some models have discharge sensor, which will also give the same fault code.)
  E5 E5 Communication 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
7 7 E1 Fault: Outdoor coil sensor open circuit
8 7 E1 Fault: Outdoor coil sensor closed circuit
9 heat/cool 
flash)
E2 Fault: High or Low pressure tripped (Note: Some models have 
discharge sensor, which will also
give the same fault code.)
E5 Communication 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.
性禁区– Phase correction must be applied to the incoming supply side.

Contact us