Hmmm. No 12VDC and no 120VAC? But the clock on the microwave is on 120vac power, so you must be getting some power into the coach. And that rules out the transfer switch as well.
I think you need to check the circuits more carefully and determine just what works and what does not. Clearly some thing are working.
What about the batteries? Are the house batteries charged up? Have you located the converter/charger yet? Often it will have a regular 120vac power cord and you could plug it into an extension form the house if the internal power isn't yet working.
What does the generator do, besides not start? More detailed symptoms?
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL