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Magic Chef Microwave exhaust fan not working

When your Magic Chef microwave exhaust fan is not working, start with the door switch, which may fail to signal the control board that the door is closed. Test the door switch for continuity and replace it if it fails. Next, check the exhaust fan motor. The fan blades should turn freely by hand, and the motor should have incoming power and continuity. If the motor has power but will not run, or it lacks continuity, replace the motor. A defective thermostat can also keep the microwave fan from turning on, so test it for continuity and replace it if open. If the fan runs but the vent is not pulling air, inspect the grille for clogs or damage. A faulty control module is possible but less common, so check the motor and wiring first. A micro switch can cause the same problem as a door switch and should also be tested. Enter your model number to find the exact Magic Chef replacement part for your microwave. If any repair requires removing the outer cabinet, unplug the microwave first and use proper capacitor discharge procedures. The high-voltage capacitor can store a lethal charge even after unplugging, so cabinet and interior repairs may require a qualified technician.

01 - Magic Chef 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 - Magic Chef 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.
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03 - Magic Chef 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.
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04 - Magic Chef 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.
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Highly Likely

05 - Magic Chef 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.
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Common

06 - Magic Chef 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.
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Common

07 - Magic Chef Microwave Main Control Board

The main control board might be defective. However, this is not usually the case. Before replacing the control board, first check the exhaust fan motor and wiring. If the exhaust fan motor is not getting power, the main control board might be at fault.
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Common

Frequently Asked Questions

Why is my Magic Chef microwave exhaust fan not working?
Why is my microwave fan not working even though the microwave has power?
Why is my microwave vent not pulling air?
How do I find the correct Magic Chef microwave exhaust fan motor or door switch?
Is it safe to repair a Magic Chef microwave exhaust fan myself?