When it senses heat it turns on the exhaust fan.
Whirlpool over the range microwave fan won t turn off.
The light under the unit won t turn off or go to dim mode.
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.
Clicking off returns the fan to high.
Fan running during cooktop usage.
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Learn to troubleshoot and repair your microwave.
I got a new bulb and the issue is the same.
Everything else on the unit works find.
It may also automatically come on and cycle on and off to cool the microwave oven s controls while the cooktop below is being used.
Last night the exhaust vent fan decided to no turn off after use.
I have a whirlpool over the range microwave.
The microwave oven s cooling fan on some models which is separate from the vent fan automatically comes on during microwave oven operation to cool the microwave oven.
If your microwave oven doesn t shut off until the door is opened you may have a problem with the control board.
If a microwave won t turn off you may have a problem with the door interlock switch or the smart board.
Turning off this fan reduces noise from the microwave but may in turn lead to higher internal temperatures.
The control board sometimes referred to as the smart board powers the relays that control the various functions of the microwave.
When clicking the high low off button high and low settings appear to work.
How old is it.
Whirlpool over the range microwaves vent hot air into the range hood using an automatic fan cooling the microwave and its internal parts.
I have a whirlpool over the range microwave with exhaust vent fan.
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.