Aircon light blinking is one of the most common problems that people experience with their air conditioners. If your aircon light starts blinking, it can be a little bit confusing and frustrating to try to figure out what is going on. It’s important to remember that there are a few different things that can cause your aircon light to blink, and troubleshooting the problem can be a little bit tricky. In this blog post, we’ll walk you through some of the most common causes of aircon light blinking and how you can fix them.

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Poor Air Circulation

Poor air circulation is when the air in your home isn’t circulating as freely as it should be. This can happen for a number of reasons, but most often it’s due to blockages in your ductwork or vents. When these blockages exist, your air conditioner has to work harder to circulate the air in your home, which can cause a number of problems—including a blinking light. There are a few different ways that you can go about fixing poor air circulation in your home.

The first thing you’ll want to do is check all of your ductwork and vents for any blockages. If you find any, simply remove them and see if that fixes the problem. Sometimes, however, the blockages are too big or too numerous to remove on your own. In these cases, you’ll need to call in a professional aircond technician to help you out.

Refrigerant Leak

Most air conditioners have a light that indicates whether the unit is on or off. However, if this light starts flashing, it usually means there is a problem with the unit. One of the most common reasons for a flashing AC light is a refrigerant leak

Refrigerant is used in air conditioners to cool and dehumidify the air inside your home. If there’s a leak, the unit will no longer be able to properly cool your home. In some cases, a leaking unit will emit a hissing noise. If you notice this, it’s important to shut off the unit and call a professional for repairs

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If you don’t have a refrigerant leak but your AC light is still flashing, there could be another issue with the unit. To troubleshoot this, you’ll need to check the thermostat and make sure it’s set to “cool.” If it is, then you’ll want to check the filters and make sure they’re clean. Clogged or dirty filters can cause a number of problems with your air conditioner, including a flashing light.

Clogged Air Filters

An air filter’s job is to trap dirt, dust, and other pollutants so they don’t enter your home through the ductwork. Over time, the filter becomes clogged with all of the particles it has caught. When this happens, airflow is restricted, which can cause your air conditioner light to blink.

Blinking lights are usually a sign that something is wrong with your appliance. In the case of an air conditioner, it could be caused by a number of different things: a faulty capacitor, low refrigerant levels, or a clogged air filter. Of these three potential causes, a clogged air filter is the most common. That’s because it’s easy to forget to change your air filter regularly. Most filters should be changed every three months or so.

Luckily, changing a clogged air filter is a relatively easy process. Begin by turning off your unit at the thermostat. Then, locate the filters. Filters are typically located either in front of or behind the return-air grille (the metal grate that allows cooled or heated air to enter your home). Once you’ve found the filters, remove them and put in new ones. Once the new filters are in place, turn on your unit at the thermostat and enjoy cool, comfortable indoor temperatures once again.

Poor Maintenance

There are a few different reasons why poor maintenance can cause your air conditioner’s light to blink.

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First of all, if the filter is dirty, it can restrict airflow and cause the unit to overheat. Additionally, if the coils are dirty, they won’t be able to effectively transfer heat, which can also lead to overheating.

Finally, if the thermostat is set too low, the unit will run continuously in an effort to reach the desired temperature, which can also cause it to overheat.

There are a few different things that you can do in order to fix this problem.

  • You’ll want to make sure that you change the air filter on a regular basis – at least once every three months.
  • Additionally, you should clean the coils with a brush or cloth on a monthly basis.
  • You’ll want to check the thermostat setting to make sure that it’s not set too low.

By taking these simple steps, you can help prevent your air conditioner’s light from blinking.

Incorrect Aircond Installation

Incorrect Aircond Installation

There are a few different ways that incorrect installation can cause your air conditioner to blink. First, if the AC unit is not level, the compressor may turn off and on frequently, which will cause the light to blink. Second, if the AC unit is installed too close to a heat source, such as a furnace or hot water heater, the unit will run constantly in an effort to cool down. This can also cause the light to blink.

Fortunately, both of these problems are easy to fix.

Make sure that your AC unit is level. If it’s not, adjust the leveling feet until it is.
Move the AC unit away from any heat sources in your home. Once you’ve done this, the blinking should stop.


If your air conditioner’s light is blinking, it could be caused by a number of different things. Fortunately, most of these problems are easy to fix. In most cases, you can simply change the air filter or clean the coils. However, if the problem persists, you may need to call a professional for assistance.