Microwave Oven Fan Won T Shut Off

On several models of microwaves the thermostat is super sensitive causing the exhaust to run longer than needed.

Microwave oven fan won t shut off.

This is over the stove model is spacemaker xl1800. Units over a range or oven may automatically turn on the exhaust system when the area around the microwave becomes too hot. The door switches often referred to as interlock switches provide power to the various components of the microwave. If the light is off the turntable is not rotating and the display counter is done chances are it s not actually on it s just running the fan to cool down.

The exhaust fan thermostat is usually the failed component. There is a hook or latch on the microwave door which activates the door switch located inside the cabinet. A good reliable microwave can be an important part of any modern kitchen. The high limit thermostat sends voltage to the oven fan as the oven heats up.

When it senses heat it turns on the exhaust fan. They are designed to interrupt the power when the door is open. If you ve got a microwave that just won t quit even when the timer goes off you ve certainly got a bit of a problem on your hands. The fan on my ge microwave will not turn off and is stuck on.

I have tried unplugging and allowing it to rest but the fan turned on as soon as i plugged it back in. If you are cooking on the cooktop it can sense the heat and the fan won t turn off until the thermostat cools. If the high limit thermostat is defective it may keep sending voltage to the oven fan after the oven has cooled down. But not a problem that our electricians in laurel can t fix.

If your microwave oven doesn t appear to shut off when the door is open you may have a problem with the door switch. But is your microwave working a little too well. To determine if the high limit thermostat is at fault use a multimeter to test the thermostat for continuity.