If you are facing errors on the Aermec air conditioning system, you shouldn’t panic because this is an indication of a specific issue in the system. Below is a detailed list of all error codes that can occur on the Aermec air conditioner.
We have mentioned the causes along with the best suitable solutions to take these errors down. Most of the error codes can be taken down as a DIY project but you should always contact a professional HVAC engineer or a technician when required.
Aermec air conditioner error code E2
Causes:
- The system has initiated the anti-freeze protection mode.
Solutions:
- Turn OFF the air conditioner. Restart it again after 3-5 minutes or until the icing melts.
- Check the fan for any issues. Make sure that the fan is running smoothly and at a high speed.
- Do a thorough cleaning of the system to remove dirt buildup covering the coils and components.
- If the error remains, seek the help of a local technician to check and inspect further to remove the error.
Aermec air conditioner error code E4
Causes:
- The system has entered high-temperature protection against the compressor.
- The air conditioner has been continuously used for too long in extreme temperatures.
Solutions:
- Turn OFF of the air conditioner for 5-15 minutes for rest. Restart it again to see if the error goes away.
- Check voltages and ensure a stable and consistent supply.
- Check the power supply and main PCB. Replace either of the components if malfunctioning.
- Inspect the compressor wire harness and the compressor itself. Do repairs as needed.
Aermec air conditioner error code E5
Causes:
- This error only occurs in some specific models when the protection from overcharging is activated.
Solutions:
- Turn OFF the changing switch if it is full or at 100% level.
- Unplug the charging cord from the system.
- Check the main PCB and do a replacement if it is malfunctioning.
Aermec air conditioner error code E6
Causes:
- The indoor and outdoor units of the air conditioner are unable to communicate with each other.
- Different components within a single unit have some issues in their communication.
- There are some issues with the wiring and connections between the indoor and the outdoor unit.
- The main PCB of either of the units is not working properly.
Solutions:
- Check the communication wire between the indoor unit, outdoor unit, and different components of the system. Repair or replace the wires if they are broken, loose, or damaged.
- Check for any malfunctions in the main PCB of either the indoor unit or the outdoor unit. Repair or replace the board if it is faulty.
Aermec air conditioner error code F0
Causes:
- This is a coolant gas collection error and indicates a low level of refrigerant.
Solutions:
- Contact an HVAC engineer to check the coolant gas level and do the refill if it is less than required.
- Look through the system and repair if there are any leaks in the coolant gas piping.
Aermec air conditioner error code F1
Causes:
- The internal air temperature probe/sensor is defective.
- Short circuit in internal air temperature probe.
Solutions:
- Check the resistance coefficient of the sensor with the help of the meter. If it is weak or not compatible, replace it with the stronger one.
- Check for any issues in the wiring and connections between the main PCB and the sensor. Repair or replace the wires if they are broken, loose, or damaged.
- Contact a professional technician to check for any open or short circuits in the sensor. Repair or replace the defective parts as needed.
- If the error remains, check the main PCB as it can be defective and need replacement.
Aermec air conditioner error code F2
Causes:
- The probe/sensor on the evaporator is malfunctioning.
- Short circuits in the evaporator probe.
Solutions:
- Try the same solutions as suggested for the Aermec air conditioner “Error Code F1”.
Aermec air conditioner error code F3
Causes:
- The temperature sensor for the external environment of the system is malfunctioning.
- There is an open or short circuit in the temperature sensor for the external environment.
Solutions:
- Try the same solutions as suggested for the Aermec air conditioner “Error Code F1”.
Aermec air conditioner error code F4
Causes:
- The temperature sensor for the external compressor is not functioning properly.
- The temperature sensor for the external compressor is subjected to an open or short circuit.
Solutions:
- Try the same solutions as suggested for the Aermec air conditioner “Error Code F1”.
Aermec air conditioner error code F5
Causes:
- There are some issues with the functioning of the discharge sensor of the outdoor unit.
- The discharge sensor of the outdoor unit has an open or short circuit.
Solutions:
- Try the same solutions as suggested for the Aermec air conditioner “Error Code F1”.
Aermec air conditioner error code H3
Causes:
- The system has initiated the compressor protection mode from overloading.
- There is clogged-up dirt or debris in the condenser coils, condenser, evaporator, blower, or other related components.
- The air conditioner has been continuously operating for too long.
Solutions:
- If the issue is using the air conditioner for too long, turn OFF the air conditioner for 5-15 minutes or more to let it cool down. Restart it again to see if the error goes away.
- Clean the evaporator, coils, blowers, and all other related components of the air conditioner thoroughly to remove any clogged-up dirt or dust.
- Check for any leakage of gas from the air conditioner. Contact a professional engineer to repair the leaks and fill the gas to a certain level.
- If the error persists, check the evaporator and condenser for malfunctioning with the help of a technician. Repair or replace them if they are defective.
Aermec air conditioner error code H4
Causes:
- This is a system fault error and can occur due to multiple reasons.
- The fuse is blown.
- Circuit breakers have tripped.
- PCBs are malfunctioning.
Solutions:
- Replace the fuses if they are blown away.
- Reset the circuit breakers if they are tripped.
- Replace PCB if they are defective.
- Contact the Aermec technical or customer support department for guidance or for an engineer to inspect the system and make repairs.
Aermec air conditioner error code H5
Causes:
- The IPM module’s high-temperature protection has been initiated.
- The connections and wiring in the IPM module are broken or loose.
- The power supply to the IPM sensor is not enough and stable.
- The main PCB of the air conditioner is malfunctioning.
Solutions:
- Restart the air conditioner after turning it OFF for a few minutes.
- Check the IPM sensor and make sure that it is perfectly and tightly positioned in the right way.
- Check the wires and connections of the IPM sensor. Repair or replace the defective or loose connections and wires as needed.
- Check the power and voltage by using the meter. Make sure that stable and consistent voltage is being supplied to the system.
- Inspect the main PCB or control board. Repair or replace it if it malfunctions.
Aermec air conditioner error code HC
Causes:
- The system has started the PFC protection mode.
- There are loose or broken wires and connections in the PFC.
- The power supply to the main unit is not enough and stable.
- The main PCB is not working well.
Solutions:
- Turn ON the air conditioner after keeping it OFF to rest for a few minutes.
- Check for any loose or broken wires and connections in the PFC sensor. Repair the defective areas as required.
- Make sure that the PFC sensor is perfectly tightened and adjusted in the right way.
- Check the power and voltage with the help of the meter. If it is not stable, make sure stable and enough voltage is being supplied.
- Check the main PCB for any malfunctions. Repair or replace it if it is faulty.
- If the error remains, contact the technician to check the unit for any issues and to remove the error.
Aermec air conditioner error code L9
Causes:
- The power supply protection is running on the system.
- The power supply is defective.
Solutions:
- Check voltages, power cord, and wire harness for issues. Do repairs and fixes as needed.
- Check the main PCB of both units for malfunctioning. Replace the component if it is defective.
- Inspect the power supply for any defects. Repair or replace it as suggested by the technician.
Aermec air conditioner error code PH
Causes:
- The DC bus-bar voltage protection mode has been activated.
- The DC bus-bar voltage being supplied is too high than the required maximum limit.
Solutions:
If the power is not stable from the company itself, unplug the switch and inform the power company about the abnormal voltages. Don’t turn the air conditioner ON until the voltage comes back within its normal stable range.
- Check the input voltage and ensure the stable and normal supply of voltage to the system.
- Check the mainboard for any issues. Repair or replace the main PCB if it is defective.
- Check the compressor with the help of a technician as it can be faulty and need repair or replacement as per its condition.
Aermec air conditioner error code PL
Causes:
- The DC bus-bar low voltage protection mode has been initiated.
- The voltage supply to the system is lower than its minimum required limit.
Solutions:
- Check the voltage with the help of a meter and ensure a consistent voltage supply.
- Check the power cord and ensure it is properly plugged into the wall receptor.
- The mainboard can be faulty. Replace the board if it’s defective.
- Check the power supply and do repairs if it is malfunctioning.
Aermec air conditioner error code U7
Causes:
- The 4-way valve is malfunctioning or completely failed.
Solutions:
- Check the 4-way valve and if it is broken, defective, or malfunctioning, seek professional help to do the repairs.
- Check the wire harness of the valve and repair damaged wires.
- Inspect the main PCB and replace it if it is faulty.
