QC, haha, yes, I could conceivably be in this parking lot for the rest of my days with present luck and stingy mindset. Fortunately I am maybe a half step ahead of you; depending on how you count. I found an RV repair place 3,3 miles from my present parking space aside a Home Depot. I’m not saying I will fork over my credit card to whatever charge they first estimate for me, and I’m hoping some free or nearly free advice might solve things in a pinch (but more likely my wallet will feel some kind of pinch), but given what I’ve gathered through hard knocks and all y’all responses, this is more mysterious and uneasily diagnosable than originally thought. And yeah, if they fix it so I have heat them a new CO alarm is in tall order (can make do with a $50 screw-in alarm such as for houses, yeah?, or do I need special built-in version?). Anyhow, thank you much for taking the time to try and help (and you have helped). Much appreciated and happy holidays and stay safe!
