Microwave runs when door open

This is probably a a bad door switch or door switch mount. Chances are only the fan and light are running when you open it, but better safe than sorry.

Opening the door while cooking (without first hitting the STOP pad) is the primary cause of door switch failure but not the only one.

I have a text file called "doorsw.txt" which helps in diagnosing and repairing door switch problems, and a file called "safety.txt" which is of vital importance.

You can find these files by searching at Yahoo.com (not Google) for this:

microwave display safety.txt

If you still have a problem, please write back with more detail. Be safe!