H3 error in Gree air conditioner

If your Gree air conditioner is displaying an H3 error, this is because it is trying to protect the compressor from overloading.

There are various components in an air conditioner that allow the unit to function properly, and these components may wear out over time.

The “H3” error code displayed by Gree air conditioners is meant to protect the compressor within the unit from excessive wear and tear and overload. Regular maintenance activities can help you prevent this error from appearing again.

Wear and tear on air conditioners

Air conditioners are built from different components, like compressors, refrigerant lines, fans and fan motors, coils and more, that all need to work together in order for the air conditioner to take in hot air, remove the excess heat and moisture from it, and release cooler air back into your space.

Even if you do not use your air conditioner often, it is inevitable that the components within your unit will wear out over time.

Regular maintenance will help minimise the effect of this wear and tear, but the older your air conditioner gets, the more its components may need to be replaced.

H3 error in Gree air conditioner

Gree air conditioners and their components are no exception to this rule and over time, you may notice more and more error codes appearing on the control panel related to the wear and tear of your unit.

The “H3” error code in Gree air conditioners is the perfect example of this, as this error code is an indication that the “Compressor overload protection” mode has been activated on your air conditioning unit.

This happens when the overload switch has been triggered successively in less than three seconds every time while the air conditioner is switched on or on standby mode.

This error code is displayed because the unit will not be able to operate while it appears, and this protects the compressor from being overloaded.

Compressor issues are quite common when it comes to most air conditioners and there are a few different compressor maintenance activities that you can complete to make sure that your compressor does not get overloaded in the future, such as:

  • Ensuring that your air conditioner has a sufficient electrical power supply
  • Regularly cleaning your air filters so that your compressor does not have to work harder than it should
  • Ensuring that the refrigerant levels are correct so that your compressor does not overheat from working too hard

You need to contact a heating, ventilation, and air conditioning (HVAC) technician who can find and fix the problem with your compressor and clear the error code from the system. In addition to that, following these steps can prevent a H3 error in the future.

How to ensure that your Gree air conditioner has sufficient power

If you have noticed that the compressor on your Gree air conditioner is continuously shorting out, this may be because it is not getting a sufficient power supply from your electrical grid.

If you are savvy, you may be able to detect and fix this short yourself with the help of an electric multi-meter.

However, if you are unsure, you can also inspect the wires to help you decide whether you need to call an electrician to fix the problem to get rid of the H3 error code, or not.

Faulty wiring can cause your Gree air conditioner’s compressor to short out. In this case, you should look for any loose, cut, or corroded wires that lead to or that are near the compressor.

How to keep your Gree air conditioner air filters clean

The air filters in your Gree air conditioner are designed to catch any dirt and debris in the air inside your home before these particles can enter the air conditioner and clog up its components.

However, over time, this captured dirt and debris can build up and this could be blocking the airflow into your air conditioner.

When there is insufficient airflow, the compressor needs to work harder to cool down the same amount of air and this could be what is overloading it and causing the H3 error code.

In order to prevent this, you need to clean your air filters every two to three weeks using a vacuum, or a soft brush and lukewarm water.

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How to check the refrigerant levels on your Gree air conditioner

Traditionally, you would need a professional to come and check the refrigerant levels in your air conditioner and to top up the refrigerant if needed.

However, you can inspect your unit for any leaks yourself if you suspect that this has caused the H3 error, because a low refrigerant level will make your compressor overwork, and it may even overheat.

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