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Fujitsu mini-split heat pump troubleshooting Guide

Is your Fujitsu mini-split not heating? If so, this post is just for you. Mini-split air conditioning units can cool and heat your home. The heating and cooling combo allows you to keep your home cool in summer and warm in winter.

Fujitsu mini-split air conditioners are known for their efficiency and durability. However, just like any other home appliance, they can encounter an issue now and then.

In this post, we will look at some of the most common issues with Fujitsu mini split AC and their solutions.

As always we recommend getting a trained professional to perform any repairs on your Senville or other HVAC units.  If you would like to be connected to a local service provider please CALL FOR QUOTE: 1.855.920.1857 Or Request a service quote online here.

Or visit our state-by-state directory to find a list of mini-split HVAC companies in your area. 

My Fujitsu mini-split is not heating — How to fix the issue?

In case your mini-split unit is not blowing hot air or heating, probably iced-over coils are to blame. When there’s not enough refrigerant in the air conditioner, ice may form on the coils. The issue of low refrigerant is not something you can resolve on your own. You need to refill the refrigerant, a task that is best left to experts. Get in touch with a certified HVAC technician in your area. He or she will refill the refrigerant, which in turn will resolve the issue of your mini-split not heating.

CALL FOR QUOTE: 1.855.920.1857

Or Request a Service Quote Online

My Fujitsu mini-split is not cooling — How to fix the issue?

A low refrigerant level can also prevent your mini-split unit from adequately cooling your home. But it’s not the only cause. Other issues can also impact your AC’s cooling capacity, some of which are very simple and can be easily resolved by you. For this reason, before you send an SOS to your local AC repair expert, first try the DIY solutions listed below.

Check the thermostat to ensure it is set to cool. If the thermostat is not set to cool, your air conditioner will not cool. Once you have set it to cool, wait for a couple of minutes. If the Fujitsu still doesn’t blow cool air, move on to the next DIY solution.

Clean the air filter. The air filter is a vital component of the indoor unit of your mini split. It ensures the components inside the indoor unit remain clean, which is very essential for an AC’s smooth functioning.

The air filter catches dirt, dust, and other airborne particles and prevents them from reaching other components inside the indoor unit. However, if the air filter is not cleaned regularly, a lot of dust and other airborne particles can collect in its pores, which in turn can block the air flow. In the worst case scenario, a blocked air filter can cause the mini split to shut down completely.

Thankfully, cleaning the air filter is easy and quick. You can do it in less than 5 minutes. Here’s what you need to do:

  • Turn the AC off
  • Remove the air filter (It is located in or around the indoor unit)
  • Clean the air filter and wait until it dries out
  • Insert the air filter back and power on the AC

Clean the condenser unit. While this is something you can do yourself, if you are not comfortable about cleaning the condenser unit yourself, it would be best to call the experts.

For your Fujitsu mini-split unit to work efficiently, both the indoor and outdoor units must be in tip-top shape. A blocked condenser unit can make it harder for your AC to cool. It may even cause your mini-split unit to shut down.

To understand how a blocked condenser unit can impact your unit’s cooling ability, it’s important to first understand how a mini split unit works. In simpler terms, the indoor unit absorbs heat from air inside your room and transports it to the outdoor unit. The outdoor unit — also known as the condenser — condenses this hot air into cool air.

If the condenser is blocked, the hot air will not get properly condensed into cool air. For this very reason, it is important that your outdoor unit has enough room to breathe. Remove any weed or dust around it. Next, carefully vacuum the condenser coil using a brush attachment. Alternately, you can gently rinse it with a hose.

After you’ve cleaned the outdoor unit, check whether or not your Fujitsu mini-split is working efficiently. If it is still not working properly, you should call the expert. They will inspect your Fujitsu mini-split and do the needful.

My Fujitsu is giving off a strange smell — What should I do?

A smelling mini split air conditioner means something is wrong. Shared below are some of the most common smells and what they imply.

Vinegar – If your Fujitsu smells like vinegar or is giving off a sweet odor, it probably means that it is losing refrigerant. Contact your local HVAC technician to get the refrigerant filled.

Mildew, Musty, or Sour – Mildew, musty, or sour smell points toward a mold problem. You probably need to get the condensate drain rinsed. Your local AC repair service should be able to do this.

Fish – If your Fujitsu mini-split smells like fish, chances are there’s a leakage or some electrical issue. Ask your local repair expert to give your unit a thorough inspection.

CALL FOR QUOTE: 1.855.920.1857

My Fujitsu mini-split is dripping water — How to resolve the issue?

In case your Fujitsu mini-split air conditioning unit is dripping water, it means there’s some issue with the condensate drain. Most probably, it is clogged with mold, which in turn causes the water to back up and spill. Your local AC repair expert should be able to fix the problem.