Exhaust Fan On Microwave Won T Shut Off

When it cools down enough it will shut off.

Exhaust fan on microwave won t shut off.

When the microwave gets hot the thermostat closes. It cannot be turned off manually. Thus turning the fan on will keep the electronic control board from getting too hot. If you are cooking on the cooktop it can sense the heat and the fan won t turn off until the thermostat cools.

You might think that your microwave is still on because you can hear it running but what you are hearing. The microwave has a base thermostat which is a safety device. On several models of microwaves the thermostat is super sensitive causing the exhaust to run longer than needed. Microwave has automatic fan ignition setting pre programmed to keep the unit components from over heating.

Fridgidaire microwave will not turn off check the fan. When it senses heat it turns on the exhaust fan. 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.