If your Dacor microwave exhaust fan is not working, the problem is usually a door switch, exhaust fan motor, or thermostat, followed by a clogged or damaged grille. A defective door switch or micro switch may fail to signal the control board that the door is closed, preventing the fan control from operating. Test each switch for continuity and replace any switch that fails. Next, check the exhaust fan motor: the blades should turn freely by hand, and the motor should have incoming power and continuity. If the motor has power but will not run, replace it. A failed thermostat can also prevent the fan from turning on, while an obstructed grille can keep the microwave vent from pulling air even when the fan runs. If the motor is not receiving power, the control module may be defective, although it is less common. Enter your model number to find the exact replacement part for your Dacor microwave. Any repair that requires opening the outer cabinet must be handled carefully because the high-voltage capacitor stores a lethal charge even after the microwave is unplugged. It must be properly discharged before interior work, and a qualified technician may be needed if you are not familiar with capacitor discharge procedures.
01 - Dacor 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.
Enter model number to search for the required part specific to your product
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.
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.
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.
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.
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.