Microwave exhaust fan won't turn off. If the noise sounds more like grinding it may be the stirrer or exhaust fan motor. Ive replaced both thermostats on the bottom panel of the unit but the fan still runs continuously. This is over the stove model is Spacemaker XL1800. The fan will not be able to be shut off in this situation until the temperature of the oven. Microwave vent fan stuck on. When the ability of the thermostat to sense heat fails the fan is no longer under control.
The light can be turned on and off I even tried playing with the switch but nothing worked. The exhaust fan on your microwave is the same fan that cools the magnetron when you are cooking. When this occurs the vent cannot be. I think a relay on the control board has stuck causing the fan to run all the time. Vent Wont Turn Off – Over-the-Range Microwave – Product Help Whirlpool. What Causes Microwave FanVent To Not Turn Off.
Now it wont shut off. Had some water splash where it typically shouldnt in the microwave while boiling the water boiling water in a small pot with a spout and now the exhaust fan on my microwave will not shut off. This is completely normal.
You can see a parts diagram or order parts at. If you are cooking on the cooktop it can sense the heat and the fan wont turn off until the thermostat cools. For a while you might not be able to physically or manually turn your vent fan off. Hello I understand the concern and the exhaust fan of the microwave when too much heat is rising from the cooktop which could result in it being damaged will automatically turn on to prevent possible damage. The fan will not go off until your microwave records a cooler temperature closer to normal. The fan will not be able to be shut off in this situation until the temperature of the oven. The fan on my GE Microwave will not turn off and is stuck on. There is a hook or latch on the microwave door which activates the door switch located.