The light under the unit won t turn off or go to dim mode.
Microwave light stays on.
A functioning door switch provides power to other components of the microwave and should interrupt power when the door is open.
I have a whirlpool over the range microwave.
Try to open and close the door or drawer.
Retest the unit operation.
The controls light up and the oven accepts input but the timer often runs at double speed.
I tried slamming the door shut but the light still stays on.
One of the most common causes for microwave light bulb not working is that the bulb itself may be burned out.
The components that could stay on when the door is open but the door switch isn t working are the fan motor stirrer motor and interior light.
Turn the home circuit breaker to the unit off for 10 seconds then back on again.
Unplug the microwave wait at least a minute and reconnect the power to cancel demo mode.
Some microwaves have a demo mode that shows off the appliance s features in the showroom without activating the magnetron the part of the oven that generates heat.
Steps to verify issue.
To check whether this is the problem and to solve it you need to first unplug the microwave and then shut off the power to the microwave at the breaker point itself.
The light in my microwave stays on when i close the door.
Sometimes closing the door with a bit more force can help activate the switch.
Do you know the model of your whirlpool microwave.
Make sure nothing is obstructing the door or drawer from closing.
How old is it.