Samsung Microwave Fan Won T Turn Off

I have a samsung smh9207st over the range microwave.

Samsung microwave fan won t turn off.

The control panel does not turn on nor does the light inside the microwave but you can hear a humming noise. My samsung microwave won t turn off just the fan not the hi my samsung microwave won t turn off just the fan not the heat unless i leave the door open or unplug. If it stops when the door is opened it means the switch is shutting off the power as it should be but the control board is not sending the correct shut off signals when it does have power or one of the door switches has. Microwave model me21k7010ds fan turns itself on randomly random messages flash on the input screen turnable off turntable on press ok etc and beeping for no reason.

What is the solution. Both the exhaust fan and light run even after the door is opened and the set time is up. On several models of microwaves the thermostat is super sensitive causing the exhaust to run longer than needed. This microwave model me21f707mjt recently started running whenever the door is closed.

I tested this by putting a cup of water in the microwave only to find out that the oven is heating. The internal cooling fan which helps keep the electronics cool and the convection fan which is visible at the back of the oven and circulates heated air for more thorough cooking. When it senses heat it turns on the exhaust fan. This morning all of a sudden it won t turn off.

My oven fan won t turn off 01 oven control board the oven control board has relays that regulate power to the bake broil and fan circuits according to the user settings and sensor input. The exhaust fan thermostat is usually the failed component. 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 microwave only continues to run with the door closed and won t stop no matter how much you slam the stop button then it is most likely a control board issue.