KitchenAid makes high-quality microwaves that draw on the company’s long experience with manufacturing home appliances. But sometimes machines do break, and when that happens, it helps to know what’s causing the problem and how to repair it.
If your KitchenAid microwave fan is not working, it could be one of many things. Check out our extensive list of possible causes below, and hopefully, you’ll be able to find the culprit and fix it up.
Popular models of KitchenAid microwaves that this guide covers include
KCMG125DBL0
KCMG125DWH0
KCMG125EAL0
KCMG125EBU0
KCMG125ERC0
KCMS135GBL0
KHMC1857WBL1
KHMS2040BBL0
KHMS2040BSS0
KHMS2040BWH0
KHMS2040WBL1
KHMS2040WSS1
KHMS2040WSS3
KHMS2040WWH1
YKHMS2040BS0
YKHMS2040BS1
YKHMS2040BS2
YKHMS2040WB0
YKHMS2040WS0
YKHMS2040WS1
YKHMS2040WW0
One of the biggest causes of a microwave fan not working is a problem with the microwave fan motor.
The exhaust fan on your microwave may not be working because of an issue with the fan motor.
This is how to test a microwave fan motor with a multimeter:
If you have an over-the-range microwave, then you should check that the charcoal filter isn’t clogged up. Over time the filter absorbs all sorts of pollutants and will eventually need to be replaced. As part of regular maintenance, you should replace the filter regularly to ensure your KitchenAid microwave operates at its full capacity.
Here’s how to inspect your charcoal filter:
If your microwave fan isn’t working, it might be because of a clogged grease filter. The grease filter protects the exhaust system clear by trapping oils and fats from the food you heat in the microwave.
Here’s how to inspect your microwave’s grease filter:
Another reason your microwave fan is not working is that it might have a faulty damper assembly. The function of the damper is to prevent exterior air from entering through the microwave fan. It is a flap that is made of either metal or plastic and is usually spring-loaded.
Here’s how to check if your microwave damper assembly is faulty or not:
The role of the thermostat in your microwave is to monitor the air temperature and then turn the fan on if required. When the thermostat stops working, it will prevent the microwave fan from working as well.
Here’s how to check it:
If all else fails, you may need to replace the main control board. But this should be the absolute last fix that you apply to the problem. Before replacing the main control board, you should first check the exhaust fan motor and the wiring that powers it. If the motor is not getting power, then this might be because of a faulty main control board.
Hopefully, this article has helped you to fix your microwave fan and it is now working like new.
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