Sorry, I put a new control board in my Atwood furnace
this morning. Cheap repair at 90$ plus the 18$ for a new regulator to check the one I got. What I can't get over is the local "RV applicance repairman" [read thief] who came out last week, fiddled and fussed, told me six different stories to see which one would impress me, didn't have a manometer with him, and took the shirt from my back for the "diagnostic" (those are sarcastic quotation marks!) and the promise that he'd get me a price on a replacement furnace
. After another week of going blind over Atwood PDFs, I finally found a good sequenced troubleshooting protocol on Mark's RV site and discovered that for my particular symptom this feller had it down to dirty or obstructed squirrel cage fan or exhaust pipe, LP regulator, or furnace
control board. I had already eliminated dust, dirt, bondo, insulation batte, mud dobber nests, and mystical influences in the squirrel cage and the exhaust port so I got down to waiting for Brown with my mail order fixes. So today's all good except maybe my anolog crapometer is reading a bit high. Happens. This is totally OT so you may consider it a useless digression.