Hisense Air Conditioner E5 Error – Causes & Fixes

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Are you struggling to figure out what to do about the E5 error code on your Hisense air conditioner?

This error code can be frustrating, especially when you don’t know what it means or how to fix it. In this article, we will provide you with all the information you need to understand and troubleshoot the E5 code on a Hisense air conditioner.

We will answer the question of what E5 means on a Hisense air conditioner, cover the possible causes of the error code, as well as the steps you can take to fix the issue. So, sit back and relax, and let’s get started on resolving this error code once and for all!

What does E5 mean on a Hisense AC unit?

In brief, if you see an E5 code on your Hisense portable air conditioner, it signifies that the water collection tank has reached its maximum capacity.

But let’s get into the details of what it means when your Hisense air conditioner shows an E5 error.

Most of the Hisense portable air conditioners have a feature of self-evaporation, which implies that the water collected through condensation is reused, and therefore, there is no requirement to empty it. However, in regions where the climate is exceptionally humid, the excess moisture cannot be entirely evaporated, which leads to the gradual filling of the water tank.

When the E5 error code pops up, the machine will stop operating automatically to prevent water overflow. Few of the older models of Hisense do not have the self-evaporating feature, but they can be emptied continuously through a drain hose.

Now that we’ve answered what E5 mean on a Hisense air conditioner, let’s talk about the solutions.

How do I fix the E5 error on my Hisense air conditioner?

A lot of people struggle to find the answer as to how to fix the E5 error code on the air conditioner. There are several options you can try to fix the E5 error on your Hisense air conditioner.

Remove the tank’s condensate

This requires emptying the condensate in the tank. If you’re wondering how to empty the Hisense air conditioner – don’t worry, it’s simple.

Start by switching off your Hisense air con and unplugging it from the wall. Position a shallow vessel below the drain port and open it to allow the condensate to flow into the container.

After no more water is coming out, replace the drain port and power cord, and turn on the device to check if the error code has disappeared.

Verify the hygrometer and thermometer readings

The water tank in your Hisense portable air conditioner is likely to fill up only when the humidity is high. You can double-check this by checking the hygrometer. However, if the issue persists even when the humidity level is low, then your air conditioner may have other issues.

Also, use the thermometer to determine whether it is too chilly to operate your air conditioner. As previously mentioned, low temperatures can cause the portable air conditioner to freeze, leading to the water tank’s rapid filling.

Remove dirt from the drain hose

If you have connected a drain hose to your Hisense portable air conditioner and the E5 code persists, it is possible that the drain hose has become obstructed.

To remove any blockage, unplug the hose and use a wire brush to clean it. Alternatively, you can replace it with a new hose.

Substitute or clean the air filter

Turn off your Hisense air conditioner and examine the air filter located at the rear. If it is covered in debris and dust, remove it and rinse it under running water. After cleaning it, let it dry before reinstalling it.

Switch on the portable air conditioner again and see if the E5 code has reappeared. If it does not, then cleaning the clogged filter was the solution you needed anyway.

Thoroughly cleanse the evaporator coil

If the air filter is not the cause, check the condition of the evaporator coil. If it is dirty, use a compressed air can to remove the dirt. 

The cleaning process can be expedited by using some HVAC or coil cleaner.

Repair the leak and recharge your AC

If none of the above methods work, your air conditioner may need a recharge. Refrain from attempting to do it yourself since the refrigerant is hazardous.

Instead, hire an HVAC technician with the necessary equipment to test the refrigerant level in your air conditioner and detect where the leak is.

After the leak is repaired, the recharge process should take less than an hour.

What to do if I can’t fix the E5 error on my Hisense air con?

If none of the above is working, perhaps it’s time to consider returning the product. Keep in mind that the above methods are not intended for a new device. 

If your newly purchased device shows an E5 error code, the best course of action is to return the product and get a new one. A reliable Hisense portable air conditioner will not malfunction like this initially.

What else could cause Hisense e5 error every day?

Apart from the causes we mentioned above, there are other potential reasons to experience Hisense portable air conditioner E5 every day. 

Here are some additional causes behind the error code E5 on your AC unit. 

Blocked drain hose

Over time, the drain hose can become clogged with dirt, dust, and mold, preventing it from draining the condensate. 

As a result, the water will return to the tank, triggering the E5 error code when the tank is full.

Frozen evaporator coil

Insufficient warm air to warm the evaporator coil can cause it to freeze. This issue can be caused by a dirty air filter, low outside temperature, or too many contaminants on the coil.

When you turn off the air conditioner, the ice melts and the water tank fills up. When you turn the machine back on, the Hisense AC will detect the water level in the tank and display the E5 code.

Low refrigerant level

Under normal conditions, the refrigerant in the compressor and coils remains untouched, and the level does not change. However, it may leak out due to wear, tear, and other factors.

When the refrigerant level drops, the air loses its cooling ability, and the evaporator coil may freeze. As a result, an E5 error code will appear on the panel.

What are some other popular Hisense air conditioner error codes?

There is a wide array of potential Hisense air conditioner error codes you can come across. Some of them include EA, E2, E4, and others. 

The Hisense AC displays error codes in three ways: on the outdoor control board, wire remote controller, and display panel. To check for error codes, hold the Emergency button for 5 seconds while in standby mode. The error code will appear for 10 seconds before the display returns to normal. 

If multiple malfunctions occur, the error codes will alternate. If the AC can save information during a power outage, the error code can be checked in standby mode after power is restored.


We hope that all of this information will help shed some light on the topic of the E5 error code on your portable air conditioner. As you can see, this problem is quite common and not as serious as you may initially think. Follow some of the provided above advice to tackle the solution and enjoy all of the benefits of your air conditioner.