I wouldn't worry about the sensor error right away.
Sometimes that's just caused when the door is opened before steam could
be detected or steam was not detected in the maximum amount of time.
Once it's all working again, if you still get the error regularly, it may be a bad humidity sensor.
If the internal cooling fan IS running when you try to cook AND the oven is not heating, it's probably a failed secondary interlock relay on the control circuit board.
If the internal cooling fan is NOT running when you try to cook AND it's not heating, the bottom door switch is probably the culprit.
Here's is a file on checking and replacing door switches.
We have a sound clip of what a microwave should sound like when the cooling fan and high voltage section are working.
Listen to that very carefully, and listen to yours to see if the cooling fan is working.
When I say internal
cooling fan, I do not mean the hood vent exhaust fan which you can turn
on and off manually.
I'm instead talking
about the internal fan which comes on automatically whenever you
microwave.
There
should be a "mini-manual" (tech sheet) hidden inside the unit
behind the
control panel or hidden on the left side behind the grille, which is
very helpful when troubleshooting, testing, and locating components.
At
our Web site, we have a video
available showing how to remove a typical
over the range control panel assembly in under 5 minutes.
Let me know if I can help you further.
We're
happy to help you with free advice and we'd appreciate your thoughtful
rating of our answer.
I found the wire connector on the bottom door switch was bad. Replaced it and it works once again!!!
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