GE Microwave Fan Won’t Turn Off: 8 Easy Ways To Fix It Now

A microwave is an essential appliance in any kitchen for reheating and even cooking your food. When they’re not working properly, it can cause a serious inconvenience!

GE microwaves are famous for their efficiency and reliability; however, like any appliance, they sometimes malfunction. A common problem experienced by GE users is a fan that simply won’t stop running.

If this is something you’re facing, you might be concerned about whether or not you can still operate your appliance. Luckily, this problem isn’t anything serious to worry about and is pretty simple to solve.

Here is a complete guide with everything you need to know to get your microwave running smoothly again.

Why Won’t Your GE Microwave Fan Turn Off?

Before trying to solve the fan problem, here are some potential issues that might have caused it in the first place.

1. Overusing the Microwave

When you use your microwave for extended periods, the internal components, including the magnetron and other heating elements, generate a lot of heat to perform the necessary functions.

To prevent the microwave from overheating, the fan will automatically activate to cool the unit down to a safe temperature. If you’ve been using the microwave extensively, the fan may stay on to maintain a safe operating temperature, which might seem concerning.

2. Lack of Ventilation

Adequate ventilation in your kitchen is crucial for your microwave to run efficiently and safely. If your kitchen lacks proper airflow, the microwave may become too hot, triggering the fan to run for extended periods.

This can also happen if your microwave is placed in a particularly hot area, such as next to the stovetop, or if there is no gap between the appliance and the wall, trapping the heat.

You’ll need to ensure that your kitchen has sufficient ventilation, such as open windows, exhaust fans, or range hoods, to help dissipate the heat and maintain a comfortable temperature; otherwise, you might end up with a continuously running fan.

3. Faulty Thermostat

The thermostat in your microwave monitors the internal temperature and signals the fan to turn on or off accordingly. If the thermostat becomes faulty or misaligned, it may detect inaccurate temperatures, causing the fan to stay on even when it’s not necessary.

You can inspect the thermostat for any visible damage or misalignment and refer to the user manual or contact a professional technician for further guidance.

4. Clogged Air or Grease Filters

Microwave air and grease filters help prevent airborne particles and grease from entering the internal components and creating unwanted odors and a build-up in the exhaust fan.

Over time, these filters can become clogged with debris, reducing airflow and causing the microwave to run less efficiently and even overheat.

As a result, the fan may continue to run to dissipate excess heat. Regularly cleaning or replacing the filters can improve ventilation and prevent the fan from staying on constantly.

5. Malfunctioning Damper Assembly

The damper assembly is the component that regulates the airflow between the microwave and the outside environment. If the damper assembly becomes stuck or malfunctions, it can disrupt the normal operation of the fan.

You’ll need to inspect the damper assembly for any obstructions, damage, or signs of wear in order to determine whether this is the problem. If necessary, consult your user manual or seek assistance from an appliance repair technician to replace the damper assembly.

6. Malfunctioning Fan Motor

Another potential culprit is the fan motor itself. A malfunctioning fan motor can cause the fan to remain stuck in the “on” position, and therefore the fan won’t turn off.

This can happen due to motor failure or even something as simple as a faulty connection. Carefully examine the fan motor for any visible signs of damage or a loose connection; if needed, contact an appliance expert to repair or replace the motor.

7. Control Board Issues

The control board in your microwave serves as the central hub for managing various functions, including fan operation, which means that it can also contribute to this particular issue.

If the control board has a software glitch or some kind of electrical malfunction, there may be a disruption in the communication between the two components, causing the fan to stay on continuously.

If all other troubleshooting steps have been exhausted, consider consulting a technician to test the control board and diagnose the issue.

How To Fix A GE Microwave Fan That Won’t Turn Off?

Now that you understand what might be causing your microwave fan to run continuously, you can start taking the necessary steps to get it sorted out and back to normal.

1. Restart the Microwave

First, remember that a simple restart can sometimes resolve minor software glitches or temporary issues.

Unplug the microwave from the power source, leave it unplugged for a few minutes so the power drains completely, then plug it back in. This can help reset the internal system and potentially restore proper functioning.

While you’re busy, ensure that everything is in place with your power supply and that there are no electrical connection issues.

2. Implement A Cooling Period

If your microwave has been running for an extended period, it might need some time to cool down.

In this case, unplug the appliance, let it remain unplugged and untouched for about 15-30 minutes. This cooling period can help dissipate the excessive heat and may allow the fan to turn off once it reaches a safe temperature.

3. Improve Ventilation in Your Kitchen

As a preventative measure, you should make sure that you prevent excessive heat build-up and ensure that your microwave can operate properly.

For this, it’s crucial to improve the ventilation in your kitchen; make sure that your windows can be opened, and let in some fresh air from time to time. Use exhaust fans or range hoods to remove hot air and move your microwave to a well-ventilated area.

Adequate airflow will help maintain a suitable operating environment and prevent the fan from running excessively.

4. Clean Out the Filters

The next thing you can do is remove the air and grease filters from the microwave and clean them thoroughly. Over time, the filters in your GE microwave can accumulate dirt, grease, and debris, obstructing airflow and causing issues with the fan and even some other problems.

Regularly cleaning or replacing the filters will improve ventilation, prevent overheating, and help restore regular fan operation in the case of an issue. Make sure to always do this according to the manufacturer’s instructions to avoid causing any damage to the filters.

5. Check the Thermostat

If you suspect a more serious issue, inspect the thermostat for any visible damage or misalignment.

It’s important to ensure the thermostat accurately detects the temperature to regulate the fan’s operation effectively. If you suspect you’re dealing with a faulty thermostat, consult the instruction manual or contact a professional for guidance on repairing or replacing this component.

6. Inspect the Damper Assembly

Next, you can take a look at the damper assembly. As mentioned, this component is responsible for airflow regulation, so there’s a strong chance it is the culprit.

Carefully examine the part, looking for any obstructions, damage, or signs of wear. Remove any debris or foreign objects that may prevent the damper from operating correctly; if you notice anything amiss, you might need to call for professional assistance.

7. Check the Fan Motor

You can also inspect the fan motor itself for any visible signs of damage, such as frayed wires or burnt components. Make sure that all the connections are secure and not loose.

If you suspect a faulty fan motor, it’s recommended to consult a professional technician who can assess the motor’s condition and either repair or replace it as necessary since working with electrical components like this can be dangerous.

8. Test the Control Board

If all other troubleshooting steps have been exhausted and the fan still won’t turn off, it’s possible that the control board is experiencing an issue.

Testing the control board should be done by a qualified technician who can diagnose and resolve any control board malfunctions. They will have the necessary equipment and expertise to identify the issue and perform necessary repairs.


Can I fix the fan that won’t turn off on my GE microwave by myself?

Depending on the cause of the problem, some issues can be resolved by following the troubleshooting steps provided in this article.

However, if you are uncertain or uncomfortable performing the repairs yourself, contacting a qualified appliance technician or GE’s customer support is recommended for assistance.

How can I prevent my GE microwave fan from continuously running?

To prevent your microwave’s fan from running continuously, avoid overusing the microwave and allow it to cool down properly between uses.

Ensure that your kitchen has adequate ventilation, regularly clean out the filters, and use the appliance according to the manufacturer’s recommendations.

Why is it important to clean the air and grease filters regularly?

Cleaning the air and grease filters is essential to maintain proper airflow and prevent the fan from running continuously.

Over time, the filters can accumulate dust, debris, and grease, obstructing airflow and reducing your microwave’s efficiency.

What should I do if none of the troubleshooting steps work?

If you have followed all the troubleshooting steps in this article and the fan still won’t turn off, you’ll need professional assistance.

Contact GE customer support or schedule a service appointment with a certified technician to accurately diagnose and repair the issue.

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