we have an Atwood heater in out Fleetwood pop-up.. We have had problems right from the get go with it. I have had constant troubles getting the furnace to “catch” finally I took it into our dealer ( and yes- just AFTER our warranty ran out).

The problem was a faulty propane gas pressure gage. Cost 180.00 to fix. OUCH. why oh why didn’t I take it in before warranty ran out. Argh. The symptoms were the pilot was on and I could here it click- several time trying to light,. Blower was on. Sometimes it would catch. Toward the end- could not get it to catch at all.

I also have troubles with it tripping- seems to get too hot and will shut off in middle of the night.
we had a near fire with ceramic heater with kids/sleeping bag and no way will I use or recommend an electric heater for a pop up or tent. One way to go is with a heated mattress pad or electric blanket ( put blanket under you – heat rises.)