Without using instruments to know for sure, this is all guesswork.
"Doctor I don't feel well, can you tell me why?"
"Over the telephone?"
About 80% of these -can you tell me why this doesn't....- can be troubleshot using a basic book of RV electrical, heaters, A/C, etc. Is there such a book for sale somewhere?
Three minutes with a voltmeter and ammeter is = to 100,000 words 99,000 of them irrelevant on a forum such as this. I'm not chastising anyone, I am suggesting every owner that has a yearning to do their own repairs, has a responsibility to obtain CHEAP test instruments and learn how to use them. Meaning what they do for a living. From there, experienced hands can fine-tweak troubleshooting techniques and eliminate about 99.9% of the guesswork.
