Exhaust Fan On Microwave Won T Shut Off

Microwave has automatic fan ignition setting pre programmed to keep the unit components from over heating. When it senses heat it turns on the exhaust fan. If pushing the stop button does not turn off your microwave try opening the door while it is still.

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When the microwave gets hot the thermostat closes.

Exhaust fan on microwave won t shut off.

On several models of microwaves the thermostat is super sensitive causing the exhaust to run longer than needed. You might think that your microwave is still on because you can hear it running but what you are hearing. When it cools down enough it will shut off. If you are cooking on the cooktop it can sense the heat and the fan won t turn off until the thermostat cools.

Thus turning the fan on will keep the electronic control board from getting too hot. Fridgidaire microwave will not turn off check the fan. It cannot be turned off manually. The microwave has a base thermostat which is a safety device.

It will come to help keep the controls cool inside the microwave control panel. The exhaust fan will turn on automatically during heavy use of the surface burners on the cook top if the fan thermostat senses too mush heat. The exhaust fan thermostat is usually the failed component.