If you recently came across an E8 error code in your air conditioner, it’s most likely connected to a fan speed malfunction.

When the air conditioner’s fan is being slowed down for a long period of time, it will show an E8 error code. This usually happens with split-mini AC systems.

However, the good news is that you can sometimes fix it all by yourself – in just a few minutes.

Let’s dive deeper into the most common causes of E8 errors and quick solutions.

4 Common Causes of E8 Error Code [with Solutions]

Clogged filters

Dirty air filters are probably the most common reason why AC started displaying an E8 error code.

As mentioned earlier, the E8 error is caused by the fan being slowed down. Nothing slows down fans more than dirty and clogged air filters.

Not only does it decrease the overall efficiency, but it also overheats the whole unit much faster.

You should clean the filters at this moment and wash them in the sink with hot water while rinsing them. Wait for them to dry before assembling them again.

Wiring issues

Wrong wiring or faulty installation will have a huge impact on how your air conditioner performs.

The biggest issue here is that this problem can quickly trigger compressor issues leading to a more expensive repair.

A lot of times it might be that your thermostat isn’t working properly, so make sure to check out the step-by-step thermostat wiring guide and proceed from there.

Faulty motor

The motor is the most essential part of your air conditioner, and when the fan starts malfunctioning, it will display an E8 error.

The biggest issue here is that there are a ton of factors that can cause impact faulty motors such as voltage problems, water leakage, compressor, and others.

In my opinion, you should seek technician assistance immediately as you don’t want your problems to expand to other vital parts of your unit.

High humidity

When extremely high temperatures arrive, the humidity will rise and it can impact your AC’s performance.

Your unit will overheat trying to achieve the selected temperature on the thermostat and it won’t be able to keep it – the compressor will have to be overwhelmed because of this.

This usually triggers short cycling issues as well.

If this is the case, you don’t have to worry about it as it will go when the temperature drops.

BONUS Tip: Reset your unit

It happens more often than you think, but sometimes E8 error codes will simply disappear after resetting your air conditioner.

Plug it off and wait 30 minutes before plugging it back on again.

I highly recommend that you take a look at proven ways to reset any air conditioner that are healthy for your unit and won’t cause any blockages or disturbances.

And feel free to check out more mini-split AC options here.

Hey there! I am Benas, the founder and content editor at Home Caprice. Thanks for reading the article. I hope you were able to find what you were looking for. I and my team are here to simplify heating and cooling for everyone. Please have a look at the About page for more details about our website and feel free to check out our editorial process.