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HomeRepair HelpDanby Microwave RepairDanby Microwave exhaust fan not working Repair
Danby Microwave exhaust fan not working
Is your Danby microwave exhaust fan not working? If the microwave fan is not working or the vent is not pulling air, start with the door switch, which may not signal the control board that the door is closed. Test the door switch, including the primary or secondary micro switch, for continuity and replace any switch that fails. Next, check the exhaust fan motor. The fan blades should turn freely by hand; if the motor has incoming power but will not run, or lacks continuity, replace it. A defective thermostat can also prevent the fan from starting, so test it for continuity. Then inspect the grille for grease or other obstructions and replace it if damaged. If the motor is not receiving power, the control module may be faulty, although it is less common. Enter your Danby microwave model number to find the exact replacement part for your appliance. Any repair requiring removal of the outer cabinet must be handled carefully because the high-voltage capacitor can store a lethal charge even after the microwave is unplugged. Proper capacitor discharge is required before interior work, and a qualified technician may be needed if you are not familiar with that procedure.
01 - Danby 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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Top Solution
02 - Danby 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 - Danby 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 - Danby 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 - Danby 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 - Danby 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 Danby microwave exhaust fan not working?
How do I test a Danby microwave exhaust fan motor?
Can a door switch or thermostat keep the microwave exhaust fan from working?
Should I replace the Danby microwave control module if the exhaust fan does not work?
How do I find the correct Danby microwave exhaust fan part?
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