Fujitsu Air Conditioner Problems: 7 Common Issues (Must Read)

On a hot summer day, it’s pretty frustrating if your air conditioner stops working.

But, before you lose your cool, keep in mind that complications and problems can arise regardless of the brand and there are things you can do to get your air conditioner back up and running.


If you find yourself in such a situation with your Fujitsu AC, continue reading below.

Fujitsu Air Conditioner Problems: 7 Common Issues (Must Read)

Here are 7 common problems with Fujitsu air conditioners, along with their causes and solutions.

This is not to say that if you buy a Fujitsu air conditioner, you will have these problems.

These are the most commonly experienced problems.

Not too dissimilar to other air conditioner brands

Fujitsu AC not cooling

From time to time, Fujitsu air conditioners can stop cooling the air they blow out

If your Fujitsu Air Conditioner is not cooling, it’s likely to be a clogged air filter or defective thermostat.

However, you don’t need to worry, as reading the causes and solutions below might help you solve the issue.

Possible solution(s):


If your Fujitsu air conditioner is blowing hot air, the thermostat may have been set to “heat” by mistake. If this is the case, it’s a simple remedy that you can do on your own.

Simply turn the thermostat to “cool” and observe if the air conditioner starts to blow cool air once more.

Check the thermostat and make sure it is set to “cool” and at the proper temperature. If it needs new batteries, replace them.

Dirty Filter

A dirty air filter can lead to a dirty evaporator coil, even though air filters have nothing to do with air temperature.

There may not be enough free airflow to allow for efficient cooling operation if the evaporator coil becomes blocked with dust and debris.

Debris build-up from a filthy air filter can cause frozen evaporator coils.

Although you may believe that “frozen” equals “cold,” the frozen coils actually obstruct the flow of cool air, causing warm air to flow from the running engine instead.

Depending on the environment, filter type, and home, air filter change should be done every 30-60 days by the owner.

Setting a monthly reminder to check the condition of your air filter is recommended.

Fujitsu AC won’t power on

If your Fujitsu air conditioner is not turning on it’s likely to be a tripped circuit breaker.

Before you call a technician check if there is a blown fuse or a tripped breaker, If the fuse is found to be burnt out, replace the burned-out fuse and reset the circuit breaker to fix the error.

Possible solution(s):

  • When it comes to an unresponsive AC, the problem is usually a loose power cable or a tripped circuit breaker. So, make sure the power cable and the circuit breaker switch are both in place, and your AC might start to work. If this doesn’t help, reset the AC using the GFCI on the power cable.
  • If the quick fixes mentioned above don’t seem to work, the problem may be of a more serious nature, as the components could be faulty. However, you will need to call a professional to deal with this matter.

Fujitsu AC not blowing air

If your Fujitsu air conditioner turns on but doesn’t blow out any air, it’s likely to be a clogged air filter or defective thermostat.

Possible solution(s):

  • Remove the filers with care and gently clean them, removing any dust on the filters.
  • If the AC fan blades are not able to rotate, the AC won’t be able to blow out air. Debris and a broken fan axle are two common reasons behind this issue. To check if your AC fan is in working condition, open the unit and remove any debris inside the fan while fixing the loose axle. 
  • If the fan blades appear to be in working condition already, chances are the AC’s fan motor is broken. To test it, open the unit and turn the fan manually. If the fan rotates with resistance, you will need to replace the motor. 

Fujitsu AC produces an unpleasant smell

Rarely this happens, but Fujitsu AC producing an unpleasant smell is typically caused by mold or refrigerant leak. 

A refrigerant leak is likely if your mini-split smells like fish, or vinegar or has a sweet odor. A lack of chilled air is another tell-tale sign that you don’t have enough refrigerant.

If you’re dealing with this issue, it’s best to use some of the solutions mentioned below as soon as possible.

Possible solution(s):

  • If your AC has been spreading an unpleasant smell, it could be due to the presence of mold. After all, the humid internal environment of an AC is the perfect place for mold to grow. You will need to contact a professional to get rid of the mold for you.
  • If mold isn’t a problem and your AC is still spreading a bad smell, your York AC might have an issue with its components. Overheated parts can easily spread a burning smell. Additionally, a gas leak can produce the smell of rotten eggs. To fix faulty components, call in a professional.

Fujitsu AC temperature inaccurate

If your Fujitsu AC hasn’t been keeping the temperature maintained at the value you set, it’s likely to be a faulty thermostat.

The good news, this issue can be dealt with if you read the following causes and solutions.

Possible solution(s):

  • The thermostat is responsible for regulating the temperature. If this part is broken, you will not be able to change the temperature and might even harm other components. However, a thermostat can be quite complicated to test and fix, so you’ll need a professional to do the work for you.
  • If the thermostat is working fine, the compressor might be broken and will have to be replaced. Additionally, you can also check for a refrigerant leak.

Fujitsu AC is not responding to the remote control

Fujitsu air conditioner’s remote is not working it’s likely to be an issue with the batteries,

Continue reading the possible causes and solutions to find the fix.

Possible solution(s):

  • The reason behind an unresponsive AC is typically a lack of power in the controller. So, replace the remote control’s batteries and test if it works. 
  • The main control board of the York AC has an infrared receiver to receive the signals coming from the remote control. If this receiver fails to work, your AC will not respond to the remote control. So, if your remote control is in working condition, replace the main control board to fix the issue.

Fujitsu AC produces noise

If your Fujitsu AC is making more noise than normal it’s probably being caused by debris being stuck inside the appliance. 

However, there are several ways you can fix this issue.

Possible solution(s):

  • Typically, the reason behind the noise is debris stuck in the AC. So, open up your AC unit and check for debris in the fan, filter, and other areas, removing it thoroughly. 
  • The fan motors contain lubricated ball bearings. However, over time, this lubrication can decompose, causing the bearings to produce noise when the fan rotates. If that’s the case, replace the motors for your AC fans. 

If your Fujitsu air conditioner is spewing heated air, making hissing or gurgling noises, or has ice on the refrigerant line best to turn it off and call a technician 

Fujitsu AC is Leaking Water Excessively

It’s expected for a Fujitsu AC to produce water through condensation.

However, if you start to notice water puddles and excess water leakages, there’s something wrong with your AC.

Fujitsu AC leaking water excessively is typically caused by a dirty air filter or blocked pipe 

Continue reading to find out what may be wrong and how to fix it. 

Possible solution(s):

  • A dirty air filter will block the flow of air, causing coils inside the AC to freeze when the frozen components thaw, and excess water starts to leak outside the AC. So, open your AC unit and clean your filter thoroughly to reduce water leakage.
  • A PVC pipe known as a drain line is used to move the condensation outside in a drain. However, if this pipe becomes clogged, the water can start to leak elsewhere. Check the drain line for blockages and remove them to fix your AC.

How long do Fujitsu air conditioners last?

Fujitsu air conditioners can last anywhere between 10 to 15 years.

However, considering your use, your AC’s lifespan can vary.

So, it’s best to keep your AC in good condition at all times to add a few years to its life.

Are Fujitsu air conditioners any good?

Fujitsu air conditioners are excellent. Fujitsu is a reputable manufacturer that offers affordable, feature-rich air conditioners. The company provides a wide range of air conditioners for residential use, all of which include the impressive features for which Fujitsu has become well-known.

As a result, Fujitsu is unquestionably a good brand of air conditioner.

What do the reviews say?

We needed a big unit to cool/heat the whole ground floor of our house. We are glad we chose this unit. It’s a powerhouse and reaches the desired temperatures really quick. Functions come in handy, especially since the swing can be adjusted in both ways vertically and horizontally. Happy with the purchase

Where I live it is either very cold in winter or very hot in summer……..The chilly mornings have worked out extremely well with this unit. Grateful for finding this unit.

This is a great unit and really cools quickly and over a large area, then sustains that temperature with any effort. Marvelous!

Pros and cons of Fujitsu air conditioners

Here are some pros and cons of Fujitsu air conditioners. 


  • Broad range of products to choose 
  • Reliable and cost-effective
  • Many different features


  • Tend to be noisy compared to other brands


If you’re looking for an AC unit, Fujitsu is the brand to go with.

However, sooner or later, you will run into some issues.

In that case, the solutions mentioned above will be quite helpful.

So, keep them in your mind and maintain your Fujitsu AC in good condition at all times.

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