Actron is one of the companies that is considered a contender to be ranked as one of the best air conditioner manufacturing companies. They offered products of high quality with minimal maintenance required. However, faults and issues can occur at any point. Actron will display an error code which is a direct indication of the causes leading to the error. All you need is to know what that specific error code is telling you.
As many error codes can be displayed on Actron air conditioners, we have gathered and organized all the error codes in one place along with their possible causes and solutions. If the error can be taken down as a DIY task, just do it. But if it involves electronics, harnesses, and compact components, it is better to take the services of a professional who can help you out without putting the unit at risk of getting damaged or broken completely.
Actron Air Conditioner ESP Unit Error Codes
Outdoor CPU, Wall Controller
Actron Air Conditioner Error Code 0
Causes:
This is an indication that the air conditioner is working in cooling mode and sometimes can occur when/if:
- The air conditioner is malfunctioning while it’s in cooling mode.
Solutions:
- Try switching air conditioner modes and energizing them.
- Turn OFF the air conditioner for a few seconds and then turn it ON again after a few seconds.
- If still getting the error, call company customer support for further guidance on the issue.
Actron Air Conditioner Error Code 1
Causes:
- This code is either an indication that the air conditioner is operating in heating mode or it is not working smoothly while heating.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code 0”.
Actron Air Conditioner Error Code 2
Causes:
- This error is reported by AC when the heating compressor is taking more run time than the normal limit of 20 minutes.
Solutions:
- Restart the air conditioner after turning it OFF for a few seconds. Energize it multiple times.
- Try changing the temperature on the air conditioner to see if the error goes away.
- Contact an air conditioner technician to check the pressure valve, intake valve, gasket, and seal for any issues. Repair or replace either of the components as required.
Actron Air Conditioner Error Code 3
Causes:
- This is not an error but an indication that the air conditioner has started the defrost process during the heating mode.
Solutions:
- Mostly, the error will be tackled by the air conditioner itself once the defrost process has been completed.
- Turn OFF the air conditioner and then turn it ON again after a few seconds.
- Check the main PCB (Printed Circuit Board) or Control Board of the air conditioner for any malfunctioning. Replace the PCB if needed.
- Contact a professional technician or a local engineer to check the heating and defrost-related components such as the evaporator, cooling coils, and condenser.
Actron Air Conditioner Error Code 4
Causes:
- This error is reported by the Actron air conditioner when it has entered the anti-freeze protection mode also known as a reduced capacity mode.
- The air conditioner or some of its components are overheating.
Solutions:
- Restart the air conditioner after turning it OFF for about 3-5 minutes. This will allow the AC to cool down before it starts operating again.
- Make sure that the air conditioner fan is spinning. Increase AC fan speed to the maximum.
- Contact the company’s customer support or call a local technician for further guidance and assistance in inspecting the heating components of the AC.
Actron Air Conditioner Error Code 5
Causes:
- This error is an indication that the coils of the indoor unit are heating a lot or pre-heating while the AC is running in heating mode.
- Coils are partially or completely covered with dirt and debris build-up.
- The evaporator is covered with dirt.
- Fans and filters of the air conditioner are clogged due to dirt or some foreign item.
Solutions:
- Switch OFF the air conditioner and then turn it ON again after 3-5 minutes.
- Do a general cleaning to remove dirt and debris from the coils.
- Clean the evaporator to remove dust so that outside air can keep it cool.
- Clean the filters and remove foreign items that have stuck in the fan. Move the fan manually until it starts spinning smoothly.
Actron Air Conditioner Error Code 6, E6
Causes:
- This error is reported when the discharge temperature sensor of the air conditioner is malfunctioning.
- There is an open or short circuit in the discharge temperature sensor or it is completely broken.
Solutions:
- Check the resistance of the sensor and ensure it is of compatible strength. If the sensor is weak, replace it.
- Call a technician to visit your house and check the sensor for any open or short circuits. Replace the sensor if it’s broken.
- Check the wiring and connection between the main PCB and the sensor. Repair the wires and connectors if loose or broken.
- If still getting the error, check the main PCB for any faults. Replace the PCB if it’s defective.
Actron Air Conditioner Error Code 7, E7
Causes:
- This error occurs when the coil sensor of the outdoor unit is faulty.
- An open or short circuit has occurred on the coil sensor of the Actron air conditioner outdoor unit.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code 6, E6”.
Actron Air Conditioner Error Code 8, E8
Causes:
- This error is reported when the discharge sensor of the outdoor unit is malfunctioning.
- There is an open or short circuit in the discharge sensor of the outdoor unit.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code 6, E6”.
Actron Air Conditioner Error Code 9, E9
Causes:
This error is reported in the Actron Air Conditioner models equipped with 3 Phase scenarios.
- There is too high or too low pressure in the air conditioner unit.
- Some malfunctioning or issues with the phase and related aspects of AC.
Solutions:
- Turn OFF the air conditioner for 10-15 seconds and then turn it ON again. Energize it multiple times to see if the error goes down.
- Check the harness for any pinched wire or loose connectors. Fix wiring and connections as needed.
- Contact a professional technician or an engineer to check the main PCB for any faults. Replace the PCB if needed.
Actron Air Conditioner Error Code E2
Causes:
- This error occurs when the coil out sensor of the outdoor unit is at fault.
- Open or short circuit in the coil out sensor of the indoor air conditioner unit.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code 6, E6”.
Actron Air Conditioner Error Code E3
Causes:
- This error pops up on the air conditioner display when either of the room sensors is faulty.
- Open, closed, or short circuit in the room sensor of the air conditioner.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code 6, E6”.
Actron Air Conditioner Error Code E4
Causes:
- This error is reported by the Actron air conditioner when the coil sensor of the indoor unit is not working properly.
- An open, closed, or short circuit in the indoor coil sensor.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code 6, E6”.
Actron Air Conditioner Error Code E5
Causes:
- This error is telling you that the indoor and outdoor units of the AC are unable to communicate with each other.
- The communication wire between the units is pinched, loose, or broken.
- The main PCB of either the indoor or outdoor unit is faulty.
Solutions:
- Restart the air conditioner after turning it OFF for about 10-15 seconds.
- Call an electrician to check the communication wiring between the indoor and outdoor units for any damages or issues. Repair or replace wires and connectors as needed.
- Check the main PCB for any malfunction. Replace the PCB if it is faulty.
Actron Air Conditioner Indoor Board Error Codes
Actron Air Conditioner Error Code E1
Causes:
- This error occurs on the Actron air conditioner when the auxiliary sensor is not functioning.
- Occurrence of an open or short circuit in the auxiliary sensor of the air conditioner.
Solutions:
- Check the resistance of the sensor. Replace the sensor if it’s weak while making sure that the new sensor is suitable for the system.
- Check the sensor for an open or short circuit. Replace the sensor if faulty.
- Check the wiring and connections between the main PCB and the sensor. Fix broken wires and loose connections.
- Call a technician to check the main PCB for any malfunction. Replace the PCB if it’s faulty.
Actron Air Conditioner Error Code E2
Causes:
- This error is reported when the indoor coil sensor is not operating.
- An open or short circuit in the indoor coil sensor of the air conditioner.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code E1”.
Actron Air Conditioner Error Code E3
Causes:
This error is triggered due to two main reasons.
- Air conditioner detects overcurrent or undercurrent situations.
- AC has activated protection mode against over or undercurrent.
Solutions:
- Restart the air conditioner after turning it OFF for 5-10 seconds.
- Check the supply voltages in the air conditioner using a meter. Make sure that they are enough as required and consistent as well.
- Remove any foreign items if stuck in the indoor fan. Manually spin the fan until it starts turning smoothly.
- Contact a local electrician to inspect electrical components including the power supply, power line, phases, switch, and sockets.
Actron Air Conditioner Error Code E4
Causes:
- This error is reported when the DIP switch is not in place.
- Wrong DIP settings in the Actron air conditioner.
Solutions:
- Adjust the DIP switch as a DIY task using your finger, fingernails, or any other small and compatible tool.
- Call a local technician to correct the DIP switch settings on the circuit board.
Actron Air Conditioner Error Code E5
Causes:
- This error occurs when indoor and outdoor units of Actron air conditioners are unable to communicate with each other.
- The communication wire between the two units is damaged or broken.
- The main PCB of the AC is malfunctioning.
Solutions:
- Try the same solutions as suggested for the “Error Code E5” on Actron air conditioner ESP units.
Actron Air Conditioner Error Code E6
Causes:
- This error is reported by the air conditioner when the indoor fan is not operating at full capacity or is completely blocked.
Solutions:
- Check and ensure that the AC breaker hasn’t been tripped.
- Check the evaporator, refrigerant lines, and coils for icing. Let the ice melt if there is any.
- Clean the air filters to remove dust and debris build-up which may be causing the clogging.
- Contact an electrician as this could be an issue with the electrical components of the fan itself.
Actron Air Conditioner Error Code E7
Causes:
- This error occurs when a 3rd Party voltage control is selected on the ID (Inside Diameter) and the input voltages are less than 0.1V.
Solutions:
- Check the voltages and if they are fine, restart the air conditioner after turning it OFF for a few seconds.
- Correct the input voltage supply. Call a technician if you are not much familiar with this.
Actron Air Conditioner Outdoor Board Error Codes
Actron Air Conditioner Error Code E11
Causes:
- This is a Probe 1 configuration error which can occur if there are some issues with the programming of the AC.
- Indoor and outdoor units or any two components of the AC are not configured correctly.
Solutions:
- In most cases, the system will take down this error by itself but if it doesn’t, restarts the AC after turning it OFF for about 10-15 minutes.
- If still getting the error, contact an air conditioner engineer or preferably an operator from Actron itself to inspect the issue and reprogram the system if needed.
Actron Air Conditioner Error Code E12
Causes:
- This error is triggered when the temperature inside the air conditioner is exceeding its normal limits.
Solutions:
- Turn OFF the air conditioner until it cools down properly and then turn it ON again.
- Try changing the running temperature on AC.
- Ensure that proper and consistent voltages are being supplied to the air conditioner.
- Clean coils, evaporators, condensers, and all such components as dirt covering can also increase the temperature.
- Check and ensure that wiring and connectors are fine and in place.
- Make sure that the radiator is fine and installed in its intended position.
- Check the main PCB for any malfunction. Replace the PCB if needed.
Actron Air Conditioner Error Code E13
Causes:
- This is a Probe 3 error that occurs due to corruption or issues in AC configuration or setup.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code E11”.
Actron Air Conditioner Error Code E14
Causes:
- This error indicates some issues with the Probe 4 configuration or step-up.
Solutions:
- Tru the same solutions as suggested for the Actron air conditioner “Error Code E11”.
Actron Air Conditioner Error Code E15
Causes:
This error is reported by Actron air conditioner because of two main reasons:
- The discharge temperature of outdoor units is getting out of range.
- The compressor is experiencing high pressure.
Solutions:
- Restart the air conditioner after turning it OFF and letting it cool down properly.
- Check and make sure that the wiring and connections between different components of the air conditioner are fine and in place.
- Ensure that the compressor resistance and ground resistance are correct.
- If still getting the error, call a technician to inspect the compressor, main PCB, and related components for any faults. Repair or replace components as needed.
Actron Air Conditioner Error Code E16, E17
Causes:
- This error is reported by the Actron air conditioner when the OD coil sensor is malfunctioning.
- The temperature inside the air conditioner is getting out of range.
Solutions:
Depending upon the cause of the error in your air conditioner:
- Try the same solutions as suggested for the Actron air conditioner “Error Code E1”.
- Try the same solutions as suggested for the Actron air conditioner “Error Code E12”.
Actron Air Conditioner Error Code E18
Causes:
- This error is reported when the outdoor coil sensor is not working properly.
- An open or short circuit in the coil sensor of the outdoor unit.
- The temperature is exceeding its normal high limit.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code E1”.
- Turn OFF the air conditioner and let it rest for a few minutes and then turn it ON again. Keeping up shut for 10-15 minutes would be sufficient.
Actron Air Conditioner Error Code E19
Causes:
- This is a Probe 9 error which indicates some issues in AC configuration or setup.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code E11”.
Actron Air Conditioner Error Code E20
Causes:
- This error is reported when the air temperature sensor malfunctions.
- An open or short circuit in the air temperature sensor of the air conditioner.
Solutions:
- Restart the air conditioner after turning it OFF for about 10-15 minutes.
- Call a technician to check the main cause behind the temperature rising in the outdoor unit.
- Try the same solutions as suggested for the Actron air conditioner “Error Code E1”.
Actron Air Conditioner Error Code E21
Causes:
- This error is reported when the Multi-Input 1 is getting out of the range or has fluctuations.
Solutions:
- Restart the air conditioner after turning it OFF for a few seconds.
- Using a meter, check the input voltages to ensure they are enough and consistent.
- Contact a technician to check the input voltage converters for any malfunction. Repair or replace as needed.
- Check the wiring and main PCB for any faults. Replace the PCB if needed.
Actron Air Conditioner Error Code E22
Causes:
- This error occurs when the Multi-Input 2 is not stable or exceeds its normal limit.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code E21”.
Actron Air Conditioner Error Code E23
Causes:
- This error indicates some issues with the Fan 1 of the outdoor unit.
- Some foreign object is stuck in between the fan spinning path.
- The fan motor is faulty.
Solutions:
- Restart the air conditioner after turning it OFF for 10-15 seconds.
- Check the wiring and connections between the fan, main PCB, and the power supply. Repair any pinched wires or loose connectors.
- Open the fan cover and remove it if there are some foreign items stuck in it.
- Contact a professional to inspect the fan motor for any defects. Repair or replace the fan motor as needed.
- If still getting the error, check the main PCB for any malfunctioning. Replace the PCB if it’s faulty.
Actron Air Conditioner Error Code E24
Causes:
- This error indicates some issues with the outdoor fan 2 of the AC.
- Some foreign item is stuck in the outdoor fan.
- The fan motor is faulty.
- Main PCB is malfunctioning.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code E23”.
Actron Air Conditioner Error Code E25
Causes:
- This error is reported when the indoor fan of the AC is not working.
- Foreign items are in the indoor fan.
- The fan motor is faulty.
- Main PCB is malfunctioning.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code E21”.
Actron Air Conditioner Error Code E26
Causes:
- This error is reported when the return air temperature sensor is not working.
- An open or short circuit in the return air temperature sensor of the AC.
- The temperature in the outdoor unit is getting out of range.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code E20”.
Actron Air Conditioner Error Code E27
Causes:
- This error is reported when the supply air temperature sensor malfunctions.
- An open or short circuit in the supply air temperature sensor of the air conditioner.
- The temperature in the outdoor unit is getting out of range.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code E20”.
Actron Air Conditioner Error Code E28
Causes:
- This error is displayed on the screen when the fan is under an extreme load.
- Low or wrong voltages are being supplied to the fan motor.
- Foreign objects stuck in fans.
Solutions:
- Remove any foreign item stuck in the fan.
- Check and repair the harness between the fan motor, power supply, and main PCB.
- Using a meter, check the voltages to the fan motor and ensure they are consistent.
- Check the PCB for any faults. Replace the PCB if needed.
Actron Air Conditioner Error Code E29
Causes:
- This error code is an indication of overloading on compressor 1.
- The air conditioner is continuously operating in extreme outside temperatures for a very long time.
- Condenser coils are covered completely with dirt.
- Evaporator, blower, or filters are either clogged or have leakages.
Solutions:
- Turn OFF the air conditioner for about 15-30 minutes until it cools down properly and has an appropriate amount of rest.
- Open the system and remove dirt build-up from the cooling coils and all other components of the AC.
- Make sure there aren’t any leakages or clogging. Clean, repair, and replace components as needed.
- If still getting the error, check the main PCB, evaporator, and compressor for any faults. Repair or replace as the technician suggested.
Actron Air Conditioner Error Code E30
Causes:
- This error indicates too much load because of the same causes as mentioned for the Actron air conditioner “Error Code E29” but for compressor 2.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code E29”.
Actron Air Conditioner Error Code E31
Causes:
- This error indicates low pressure in compressor 1.
- The pressure sensor is malfunctioning.
Solutions:
- Using a pressure meter, check the pressure level in your AC system.
- Inspect the stop valve of the system and clean it if it’s clogged. Replace the valve if damaged.
- Check the pressure-detecting sensor for its resistance. Replace the sensor if it’s weak.
- Check the harness between the pressure sensor, coil sensor, and main PCB. Repair wiring and connections that are damaged.
- Ensure a consistent supply of voltages to the system.
- Contact an engineer to check the refrigerant level in your AC. Fill the freon gas if needed.
Actron Air Conditioner Error Code E32
Causes:
- This error indicates low pressure because of the same causes as mentioned for the Actron air conditioner “Error Code E31” but for compressor 2.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code E31”.
Actron Air Conditioner Error Code E33
Causes:
- This error warns about low pressure because of the same causes as mentioned for the Actron air conditioner “Error Code E31” but for compressor 3.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code E31”.
Actron Air Conditioner Error Code E34
Causes:
- This error is triggered when the system detects high pressure in compressor 1.
- The high-pressure protection has been activated by the air conditioner.
Solutions:
- Restart the air conditioner after turning it OFF for about 10-15 seconds.
- Check the stop valve for any clogging or damage. Clean or replace the valve as needed.
- Check the pressure level in your air conditioner unit.
- Check and ensure a fine, consistent, and stable HPS connection in the system.
- Check the pressure sensor for any malfunction. Replace the sensor if needed.
Actron Air Conditioner Error Code E35
Causes:
- This error warns about high pressure because of the same causes as mentioned for the Actron air conditioner “Error Code E34” but for compressor 2.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code E34”.
Actron Air Conditioner Error Code E36
Causes:
- This error is triggered when there is high pressure because of the same causes as mentioned for the Actron air conditioner “Error Code E34” but for compressor 3.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code E34”.
Actron Air Conditioner Error Code E37, E38, E39
Causes:
- This error is reported when compressors 1, 2, and 3 respectively lockout mainly because of low pressure.
The error will only be displayed or require a fix if the compressor trips 3 times within a one-hour limit.
Solutions:
- Check the pressure level and ensure it is just as required.
- Turn OFF the air conditioner and then turn it ON again after about 1-3 minutes.
Actron Air Conditioner Error Code E40, E41, E42
Causes:
- This error is triggered when compressors 1, 2, and 3 respectively lockout mainly because of high pressure.
The error will only be displayed or require a fix if the compressor trips 3 times within 60 minutes limit.
Solutions:
- Try the same solutions as suggested for the Actron air conditioner “Error Code E347, E38, E39”.
Actron Air Conditioner Error Code E43, E44, E45
Causes:
- This error is reported when the discharge temperature sensor 1, discharge temperature 2, and 3, respectively malfunction.
- The discharge temperature is exceeding its normal range.
Solutions:
- Turn OFF the air conditioner for about 10-15 minutes to cool down completely. Turn it ON again and energize it.
- Check the wiring and connections between the discharge temperature sensor and the main PCB for any loose connectors.
- Check the sensor resistance and ensure that it’s working fine. Replace the sensor if it is weak or broken.
- Ensure a consistent supply of voltages to the system.
- Turn the fan ON at full speed.
- Do a thorough cleaning of coils, evaporator, blower, and filters.
- Replace PCB if it’s malfunctioning.
Actron Ducted Systems Error Codes
As all the error codes, their causes, and solutions have been discussed above in a detailed manner, here we will just list out the major error codes that occur in specific Actron AC Controllers of Ducted Systems.
Actron WC-02 Controller Error Codes
- E1 Error Code
- E3 Error Code
- Ee Error Code
Actron NEO Controller Error Codes
- E3 Error Code
- E6 Error Code
- E7 Error Code
- E8 Error Code
- E9 Error Code
- E10 Error Code
Actron QUE Controller Error Codes
- E3 Error Code
- E6 Error Code
- E7 Error Code
- E8 Error Code
- E9 Error Code
- E10 Error Code
Actron L-Series Controller Error Codes
- E3 Error Code
- E6 Error Code
- E7 Error Code
- E8 Error Code
Actron LM7 Controller Error Codes
- E5 Error Code
- E9 Error Code
Actron LR7 Controller Error Codes
- E9 Error Code
- E10 Error Code
