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How Do I Fix Error “E8” on My Air Conditioner?

Error “E8” On Air Conditioner

An air conditioner is undoubtedly the most helpful invention of its time. It provides ultimate comfort and helps us sleep better on hot and humid summer days.

The last thing you want to see is your air conditioner displaying an error code. But malfunctioning in appliances is a part of the game. Regular maintenance is essential to keep your machine working for longer.

One of the most common air conditioner error codes is ” E8,” which occurs due to overheating.

In mini split AC, it can happen due to fan speed malfunction, while in a window unit, a blocked outdoor fan motor assembly can be the culprit. But the question is how to fix it.


It is easy to fix E8 error with simple DIY solutions. The most common way is resetting your AC, as usually a minor glitch in the system also starts displaying this error. Here is a simple way to do it.

  1. Turn off the AC and plug off the power cord from the socket
  2. Wait for 5 minutes
  3. Attach the power cord back to the socket and turn on the AC

Check the machine’s working; if the problem persists, it is better to examine other factors like:

  • Faulty fan motor
  • Wiring
  • Dirty indoor filter

Are you struggling with the E8 error code on your appliance? Read further to know the reasons for the error and easy ways to fix it.

4 Ways To Fix the E8 Code (Split AC)

Ways To Fix The E8 Code (Split Ac)

Split AC has an indoor air handling unit called an evaporator and an outdoor compressor.

Your AC will display the E8 code if any fan malfunctions, as this error indicates overheating. Here are reasons why you can get E8 error and its solutions.

1. Faulty Fan Motor

Faulty Fan Motor

The fan motor is a vital part of your air conditioner as it drives the AC fan that circulates the air. If your AC displays an E8 error, it can be due to a faulty fan motor.

There are several reasons why the fan motor can malfunction, like damage to the capacitor, voltage problems, or water dripping into the windings.

A Faulty fan motor is a common culprit for E8 error and requires immediate attention.


If your AC is turning on intermittently while displaying the E8 error, immediately call a technician to assess your fan motor to find out the cause of its malfunction and offer services for fixing the issue.

2. Clogged Indoor Air Filter

Clogged Indoor Air Filter

Another primary reason for overheating is clogged air filters, which keep dust and dirt out of the unit. Adequate airflow is vital for the optimal performance of your air conditioner.

If the air filters are clogged, it will result in airflow blockage that can cause the machine to overheat.

Once the unit starts heating up, you will get Error 8, indicating the malfunction. Furthermore, the accumulation of debris can also block the motor and exert more pressure on the appliance to do the job.


Keeping your AC clean and maintained for optimal performance is highly recommended. Having regular service can protect your appliance from malfunctioning and overheating.


Never take the overheating problem in your AC lightly, as it can become a fire hazard.

National Fire Protection Association states air conditioners are responsible for over 7,800 house fires yearly.

3. Damged Control Boards

Damged Control Boards

The split air conditioner is more advanced than a window unit. It has several control boards that help you personalize your settings and make it work the way you want.

A split AC has several control boards. If one or more boards malfunction, you can get an E8 error.


Damaged control boards require immediate replacement as it will hamper the air conditioner’s performance and ability to operate as per the instructions.

4. Wiring Problems

Wiring Problems

You should always avail professional services for installing air conditioners at home. If you plan to do it yourself, be extremely careful, as minor wiring problems while installing can result in severe consequences.

It can damage the compressor of your appliance, causing irreplaceable damage.


Always consult a professional for installing your air conditioner. Never try it yourself, as a minor fault can cause significant damage.

How To Fix E8 Error in a Window Unit

Window Ac Unit

Your window AC can also display the E8 error, which means the same as mentioned above, that the machine is overheating.

The most common reason for this error is an accumulation of dirt inside the unit.

Here are a few easy ways to fix it.

  1. Turn off your air conditioner and pull off the power cord.
  2. With the help of a screwdriver, open the frame and check for accumulated dirt.
  3. Clearing out the debris with a wire brush or a leaf blower does the job perfectly well.
  4. Once it is cleared out, place the frame back and screws on.
  5. Power on your AC and check it’s working. If it still shows an error, it is better to consult a professional for advice.


Nothing is more dreadful than your AC displaying an error code. Some faults are more technical and require professional expertise, while others are simple errors you can fix with easy DIY steps.

If you see an E8 code, it means your AC is overheating. Several reasons include faulty fan motors, wiring issues, and dirty air filters. You can look at all these issues to get a better diagnosis; otherwise, get professional help.

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