in , , ,

How To Care For A Fujitsu Mini Split Fan

How To Care For A Fujitsu Mini Split Fan

A Fujitsu mini-split requires thorough cleaning of the blower fan in addition to the filters and coils. We can provide you with guidance on how to properly clean your Fujitsu tiny split blower fan.

You first need to have access to the following item on your Fujitsu mini split unit in order to clean the blower fan:

  1. The unit’s front and top side covers should be removed.
  2. Remove the electrical component.
  3. Disconnect the blower fan’s coil.
    4 The bottom cover’s tabs should be unclipped.
  4. The blower wheel must be disconnected from the pan.
  5. Utilize a non-acid cleanser to clean the wheel.
  6. Wash the wheel in warm water, then let it air dry.
  7. Before installing the new wheel, lubricate the fan holder.
  8. Reassemble the remaining components.

Continue reading this post to learn more about how to clean a blower wheel and how to keep your air conditioner functioning properly.

Cleaning A Fujitsu Mini Split Blower Fan

How To Care For A Fujitsu Mini Split Fan

Cleaning the blower wheel on your air conditioner affects both performance and energy efficiency. The blower wheel must always be kept clean because of this. You can maintain the cleanliness of your blower fan by following the procedures below:

1. The Unit’s Front And Top Side Covers Should Be Removed

Disconnect any electrical equipment from the power source before disassembling it. After unplugging it, you can start opening the appliance.

Remove the front and top side covers to disassemble the air conditioner. Start by removing the front cover by unscrewing it.

Remove the inner plastic cover by removing the two screws on the right and one on the left that keep the air filters in place.

By carefully lifting the inner grill corners closest to the wall, you can loosen and remove the top side cover from its fasteners.

2. The Electrical Parts Should Be Removed

The pipe and room temperature thermistor are located in the top right corner of the device. Take out the control box, the three ground screws, and these.

3. Coil Must Be Separated From Blower Fan

Remove two screws from the left and right sides of the unit to separate the coil from the blower fan. The fan motor cover should then be unscrewed. The field wires must also be separated from their terminal block and must not touch any component of the unit.

4. The Bottom Cover Should Be Freed From Its Tabs

To reach the blower wheel, detach the bottom cover from any tabs or mounting brackets. Dismount the draining pan and disconnect the drain line.

5. Remove The Blower Wheel’s Connection To The Pan

Disconnect the blower wheel’s motor. Before replacing the pan, make sure to clean, drain, and dry it.

6. Use An Acid-Free Cleaner To Clean The Wheel

The blower wheel should be cleaned with an alkaline solution. Acid-based solutions are inferior than non-acid solutions because they are more corrosive, harmful to the environment, and unhealthy.

It improves performance by thoroughly cleaning your air conditioner without harming its components.

The coils and blower fan of your air conditioner may both be cleaned with this non-acidic all-purpose cleaner. 1 part solution to 3 parts water is the standard dilution ratio.

7. Let The Wheel Dry After Giving It A Warm Water Rinse

Use warm water to rinse the wheel of the cleaning agent. Use a water hose with a nozzle to rinse the solution successfully while applying only a little pressure.

To help stop the development of mold that could lead to health issues, let the wheel dry.

8. Prior To Replacing The Wheel, Lubricate The Fan Holder

Grease the fan holder with silicon before replacing the wheel. To shield the fan from corrosion and extreme temperatures, this offers insulation and lubrication.

Silicon grease is the ideal lubricant for air conditioning units because it works well in cold temperatures as well.

This food-grade grease has a long history of success in a variety of temperatures as an electrical insulator.

9. Reassemble The Remaining Components

Put all the pieces back together in the reverse order they were taken apart after the wheel is in position. To check how it operates, turn the device on.

How To Fix A Common Fujitsu Mini Split Blower Wheel Problem

How To Care For A Fujitsu Mini Split Fan

Your health will considerably benefit from keeping your AC and its components clean. Maintaining the suggested cleaning regimen is advantageous for both your health and energy conservation. Ensure that your annual schedule includes cleaning your blower wheel.

Here are some early troubleshooting suggestions, nevertheless, if you find that your unit’s fan isn’t working properly:

  • Check the air filter in your appliance. The airflow of a filtering system is reduced by dirt.
  • Ensure that the intake grille for your air system is not blocked. Additionally, make sure the outlet ports are unobstructed.
  • Verify the setting for the room temperature on your thermostat.
  • Examine the space you’re in. Close the windows and doors of the building.

If you want the space to be cold, the windows must be covered and insulated. It ought to keep out outside heat and light. Installing insulation on windows and doors is quite beneficial.

The quantity of people and equipment in a room must also be taken into consideration. An HVAC system with a large CFM capacity is required in rooms that hold a lot of people and heat-emitting devices like computers. The room cannot be adequately cooled if this is not the case.

The airflow of AC units in “ultra quiet” mode may also be reduced.

Guidelines For Operating A Fujitsu Mini Split

How To Care For A Fujitsu Mini Split Fan

Here are some details you don’t want to overlook to help you comprehend how your Fujitsu mini split functions:

1. Performance And Operation

The heat-pump principle is used by the Fujitsu micro split. This implies that cold air is let in when the ambient temperature drops.

You can utilize extra heating devices if the unit’s heat is insufficient. It could take a while for this appliance to finish heating the space.

Additionally, you should be aware that when the heating mode is activated and the outside temperature is low, ice may form in the outdoor unit, reducing efficiency.
But don’t worry, when frost is detected, its auto-defrost feature activates. It takes 7 to 15 minutes to complete the operation.

Even after the heating mode has ended, the auto-defrost continues to function. After some time, you might also observe that the unit’s top portion is still warm. There is no malfunction here. This is brought on by the refrigerant still flowing through the coils.

2. Auto-Restart

After a power outage, your device will restart and begin operating as it did prior to the outage.

When there is a power outage while the timer is in “timer” mode, the timer will reset, and its indicator bulb will flash when the power is restored.

If any adjacent electrical devices or radio transmitters are causing the device to malfunction, shut off the circuit breaker. Resuming use of the device’s remote control requires turning it back on.


In conclusion, cleaning your coils and air filters is crucial, but so is cleaning your blower wheel. You can either use this DIY cleaning and troubleshooting guide we put together for you, or you can ask the HVAC specialists you hired to service your equipment.

How To Care For A Fujitsu Mini Split Fan

What do you think?

Written by HVAC Contributor

Leave a Reply

Your email address will not be published. Required fields are marked *

GIPHY App Key not set. Please check settings

4 Easy Ways To Ventilate An AC Through A Crank Window

4 Easy Ways To Ventilate An AC Through A Crank Window

Ruud vs. Goodman: Which Is Better?

Ruud vs. Goodman: Which Is Better?