13 Aeronik air conditioner error codes + troubleshooting

Aeronik is leading towards greatness with high-quality air conditioners. They aim to bring products that are not only comforting in terms of providing cooling but integrated with the new and advancing technology coming into the world.

One such feature is their self-diagnosis which troubleshoots the system and displays an error code. We have gathered all the error codes, their causes, and solutions so that you can take down the issues with ease. It is recommended to always seek professional help whenever needed.

Aeronik air conditioner error code E1

Causes:

  1. The compressor discharge pressure is exceeding the normal limit.
  2. The compressor is overheating.
  3. The wrong refrigerant gas is being used in the system.

Solutions:

  1. Check the compressor discharge pressure sensor and ensure it is working fine. Repair or replace the component as needed.
  2. Ensure a consistent supply of voltages to the compressor.
  3. Check the refrigerant type as they differ in thermal physical properties. Ensure the correct type of refrigerant is being used in your system.
  4. Contact an HVAC engineer to inspect the refrigeration system. Improve its design and do maintenance as required.

Aeronik air conditioner error code E2

Causes:

  1. The indoor unit’s heat exchanger is frozen or has icing on it.
  2. Air filters, expansion valve, capillary tube, or the orifice is defective/clogged.
  3. The compressor contactor needs to be fixed or is in bad shape.

Solutions:

  1. Clean the condenser coils and remove icing using a blow dryer, brush, or heat gun. Be gentle because scraping hard can damage the coils or the fins.
  2. Check the unit filters and ensure they are not clogged. Clean if something is causing blockages.
  3. Inspect the expansion valve, orifice, and capillary tube. Repair if they are damaged.
  4. Check the thermostat and ensure the compressor connector is properly connected and in good shape.
  5. Turn OFF the humidifier if it is contentiously running inside the room.

Aeronik air conditioner error code E3

Causes:

  1. The pressure in the discharge of the compressor decreases from the minimum range.

Solutions:

  1. Check the thermostatic expansion valve and repair it if it is broken or clogged.
  2. Inspect the compressor and refrigeration system for any leakages. Repair leaks with the help of an HVAC engineer.
  3. Check the refrigerant level and ensure it is at least the applicable limit.
  4. Run the air fan at full speed and ensure proper airflow to the entire system.
  5. If the error remains, check the compressor as this could be at fault. Repair or replace it as suggested by the technician.

Aeronik air conditioner error code E4

Causes:

  1. The temperature in the discharge pipeline has decreased drastically.
  2. The condensation or evaporator pressure and temperature are high.

Solutions:

  1. Contact an HVAC engineer or technician to check the evaporator pressure and temperature. If it’s abnormal, bring it back to the normal range.
  2. Check the condensing temperature and ensure it is at a normal level.
  3. If the error remains, ask the technician to thoroughly inspect the system and fix issues as required.

Aeronik air conditioner error code E5

Causes:

  1. The compressor current relay has been activated.
  2. The current relay of the compressor is defective or completely failed.

Solutions:

  1. Check the starting capacitor and repair it if it has gone bad.
  2. Check the current relay and ensure it is in good shape. Seek professional help for repairs if defective.
  3. Check the wire harness of the relay and repair it if wires are damaged or connectors are loose.
  4. If the error remains, inspect the compressor current relay and replace it if it is faulty.

Aeronik air conditioner error code E6

Causes:

  1. The indoor and outdoor units of the system are unable to communicate.
  2. The components within the unit have some issues with communication.
  3. Issues with the wiring and connections between the indoor and outdoor units.
  4. The main PCB of the indoor or outdoor unit is faulty.

Solutions:

  1. This can be a one-time glitch. So, restart the AC after keeping it OFF for a few seconds.
  2. Check for any broken, loose, or damaged wire between the units or components within a unit. Repair or replace the damaged wires as needed.
  3. Check the main PCB of both units as it can be defective. Repair or replace it according to the issue.

Aeronik air conditioner error code E8

Causes:

  1. The internal block motor is under too much load than the required limit.
  2. The internal block motor is locked.
  3. There is a low supply of voltage to the motor.

Solutions:

  1. Check for any issues in the wires between the internal block motor and the main PCB. Repair or replace it if it is defective.
  2. Check the resistance coefficient with the meter. Replace it if it is weak or incompatible.
  3. Check the EXV value and do repairs as needed.
  4. Check for any clogging or dirt build-up in the refrigerant line. Clean all the restrictions thoroughly for the smooth running of the gas.

Aeronik air conditioner error code F0

Causes:

  1. The temperature sensor of the air inside the premises, indoor unit heat exchanger, or outdoor unit ambient air is malfunctioning.
  2. The sensor has an open or short circuit.
  3. The wire harness of the sensor is broken or loose.
  4. The freon gas is leaking from the indoor unit pipings.

Solutions:

  1. Take a look at the sensor and ensure it is not bent or displaced from its intended location.
  2. Check the sensor resistance and if it is less than required or not compatible, replace it with a new one.
  3. Check the wire harness and repair any damaged wires or broken connectors.
  4. Check the main PCB of both indoor and outdoor units for any faults. Replace the PCBs if they are malfunctioning.

Aeronik air conditioner error code F1

Causes:

  1. The temperature sensor in the heat exchanger is out of order.
  2. There is an open or short circuit in the temperature sensor in the heat exchanger.
  3. The heat exchanger temperature sensor wire harness is damaged.

Solutions:

  1. Try the exact solutions as suggested for the Aeronik air conditioner “Error Code F0”.

Aeronik air conditioner error code F2

Causes:

  1. The condenser temperature sensor is out of order.
  2. There is an open or short circuit in the condenser temperature sensor.
  3. The condenser temperature sensor wire harness is damaged.

Solutions:

  1. Try the exact solutions as suggested for the Aeronik air conditioner “Error Code F0”.

Aeronik air conditioner error code F3

Causes:

  1. The temperature sensor of the AC is not functioning properly.
  2. There is an open or short circuit in the temperature sensor.
  3. The wire harness is damaged.

Solutions:

  1. Try the exact solutions as suggested for the Aeronik air conditioner “Error Code F0”.

Aeronik air conditioner error code F4

Causes:

  1. The discharge room temperature sensor is malfunctioning.
  2. The sensor is subjected to an open or short circuit.
  3. The wire harness of the sensor is broken.

Solutions:

  1. Try the exact solutions as suggested for the Aeronik air conditioner “Error Code F0”.

Aeronik air conditioner error code H1

Causes:

  1. This is not an error but a warning that the AC system has switched to auto-defrosting mode.
  2. The cooling coils are covered with icing.
  3. Heat exchanger or evaporator components are frozen.

Solutions:

  1. In most cases, the error will be taken down once the icing melts from the coils, evaporator, and heat exchanger.
  2. Switch the fan settings from “Auto” to “ON” and run it at full speed for a few minutes.
  3. Clean the air filters and ensure proper airflow to the system while it’s operating.
  4. If there is still icing on the system, contact an HVAC engineer to inspect the system and make fixes as required.

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