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HomeRepair HelpGaggenau Microwave RepairGaggenau Microwave exhaust fan not working Repair
Gaggenau Microwave exhaust fan not working
When a Gaggenau microwave exhaust fan is not working, the most likely cause is a defective door switch. The door switch signals the control board that the door is closed, allowing the exhaust fan button to operate. Test each door switch for continuity with a multimeter and replace any switch that fails. Next, check the exhaust fan motor. Remove it and turn the fan blades by hand. If they do not turn freely, replace the motor. If they turn freely, test the motor for incoming power and continuity. A defective thermostat is another common cause because it monitors air temperature and activates the fan when needed. Test it for continuity and replace it if it remains open. If the fan runs but the vent is not pulling air, inspect the grille for grease, debris, or damage. The control module is less likely, but it may be faulty if the fan motor is not receiving power after the motor, wiring, door switch, and micro switch are checked. Enter your Gaggenau microwave model number to find the exact replacement part. If you open the cabinet, remember that the high-voltage capacitor can store a lethal charge even when unplugged and must be properly discharged. Use a qualified technician if you are not familiar with capacitor discharge procedures.
01 - Gaggenau 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 - Gaggenau 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 - Gaggenau 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 - Gaggenau 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 - Gaggenau 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 - Gaggenau 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 Gaggenau microwave exhaust fan not working?
How do I test a Gaggenau microwave fan motor and door switch?
Could the thermostat or grille cause my microwave fan to stop working?
When should I replace the Gaggenau microwave control module for a fan problem?
How do I find the correct Gaggenau microwave exhaust fan part?
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