Thor Forums

[Kevad]

I recently had to replace my sail switch on a 2018 Thor Freedom Elite Atwood furnace. Initially we thought we had solved the problem of the propane not firing up as there were a bunch of moderately thick strands several inches long of dust blocking the metal arm of the sail switch from fully closing with the air flow and depressing a small button (which is at the base/bottom of a V shaped design of the sail switch) which it’s designed to trigger or tells the propane there is proper air flow and allows it to flow & fire up. If it doesn’t work right it shuts down the fan and turns off completely within about 20 seconds. That little button the metal arm is designed to depress can fail as it’s usually mostly just a plastic part, although I’ve heard many do first try and slightly bent the metal arm to bow somewhat outward so that the air flow has more to push against and thus better depresses that little button or switch built into the sail switch. Now doing that may void your warranties so be careful what you say. However understand this, that sail switch usually costs under $7 and anyone can watch a 5 min You-Tube video and replace it in minutes. It’s very easy to replace as long as you can find the exact part. The paperwork I got with the purchase had the Atwood owners manual and ultimately identified the exact part number, so it can all be done without taking it in for servicing and minimal time/effort involved. However, if you feel uncertain or uncomfortable take it in and let the pros fix it, it’s a fairly simple & quick fix.