It s not actually activating the magnetron as nothing warms up.
Frigidaire microwave fan runs when door is closed.
The only way for the fan motor to run is for both the primary interlock switch i e.
My microwave same model after 2 years runs as soon as i close the door intermittently.
The microwave works when cook time is entered but will not shut off until door is opened.
I was actually looking for an answer here.
Fridgidare microwave fmv152kma fan continues to run when door is shut and cook time is completed.
No table movement no heat and no counter timing display.
A functioning door switch provides power to other components of the microwave and should interrupt power when the door is open.
In this case the microwave is indeed stuck in the on position even if nothing is actually being cooked.
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.
A malfunctioning circuit board may cause the control panel to run the light to turn on the fan to function and the turntable to rotate all signs that the microwave is working but the food may not be actually heating up.
The problem is the primary interlock switch is supposed to be open when the door is opened which would effectively remove the 120vac from the cooling fan.
Fridgidare microwave fmv152kma fan continues to run when door.