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HomeRepair HelpFrigidaire Microwave RepairFrigidaire Microwave exhaust fan not working Repair
Frigidaire Microwave exhaust fan not working
If your Frigidaire microwave exhaust fan is not working, start with the door switch, which may fail to signal the control board that the door is closed and prevent the vent fan from operating. Test the primary, secondary, or monitor door switch for continuity and replace any switch that fails. Next, check the exhaust fan motor. Remove it only if you can do so safely, turn the fan blades by hand, and test the motor for incoming power and continuity. A motor that has power but will not run, or one that does not have continuity, needs replacement. A defective thermostat can also keep the microwave fan from turning on, so test it for continuity. Inspect the grille for grease or other obstructions, and replace it if damaged. If the motor is not receiving power, the control module or wiring may be at fault, although the control module is less common. A failed micro switch can cause the same symptom as a door switch problem. Before opening the cabinet, remember that the high-voltage capacitor stores lethal charge even when unplugged and must be properly discharged. Use a qualified technician if you are not familiar with capacitor discharge procedures. Enter your model number to find the exact Frigidaire replacement part for your microwave.
01 - Frigidaire Microwave Door Switch
A defective door switch may not signal the control board that the door is closed, which can prevent the button that controls the exhaust fan from functioning. To determine if any of the door switches are defective, use a multimeter to test each of the switches for continuity. If any of the door switches do not have continuity, the switch or switches should be replaced.
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02 - Frigidaire Microwave Exhaust Fan Motor
To determine if the fan motor is defective, remove the fan motor from the microwave and try turning the fan blades by hand. If the blades do not turn freely, replace the fan motor. If the fan blades do turn freely, use a multimeter to test the motor for incoming power and for continuity. If the motor has power but won’t run, replace it. If the motor does not have continuity, replace it.
Top Solution
03 - Frigidaire Microwave Thermostat
The thermostat monitors the air temperature and turns on the fan when necessary. If the thermostat is defective, it won’t turn on the exhaust fan at all. Use a multimeter to test the thermostat for continuity. If the thermostat does not have continuity, replace it.
Top Solution
04 - Frigidaire Microwave Grille
A damaged or clogged grille can prevent the air from being properly exhausted when the exhaust fan is turned on. Confirm the grille is free of obstruction and, if the grille is visibly damaged, replace the component with a new one.
Highly Likely
05 - Frigidaire Microwave Control Module
If the microwave exhaust fan is not working, the control module might be defective. However, this is not usually the case. Before replacing the control module, first check the exhaust fan motor and wiring. If the exhaust fan motor is not getting power, the control module might be at fault and require replacement.
Common
06 - Frigidaire Microwave Micro Switch
A defective micro switch may not signal the control board that the door is closed, which can prevent the button that controls the exhaust fan from functioning. To determine if any of the micro switches are defective, use a multimeter to test each of the switches for continuity. If any of the switches do not have continuity, the switch or switches should be replaced.
Common
Frequently Asked Questions
Why is my Frigidaire microwave exhaust fan not working?
How do I test a Frigidaire microwave fan motor and door switch?
Can a thermostat or clogged grille keep the microwave exhaust fan from working?
How do I find the correct Frigidaire microwave exhaust fan part?
Is it safe to open a Frigidaire microwave to repair the exhaust fan?
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