Problem #2 is a bad door switch or door switch mount.
Problem #1 is a trouble with the control unit / display.
The avergae do-it-yourselfer can replace a door switch if he follows the proper safety and repair advice.
We repair control units on a regular basis for customers nationwide with our guaranteed $39.95 service.
We have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, linked here on Fixya:
http://tinyurl.com/yzjozk
When you get to our site, do a Ctrl-F search for R630.
We also have the entrie service manual for these on our site.
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