32Leperchaun
Member
- Joined
- Feb 10, 2025
- Posts
- 10
I have a new to me, 2015 Leprechaun with a Dometic controlled, Atwood furnace. After it was not working from the git-go, a local repair guy suggested it might be the sail switch. Upon installing a new one, the furnace seemed to work fine, then off we go to our first trip. Just returned from that first camping trip and initially, the symptoms were: blower kicks on, then furnace would ignite and stay on for 5-10 minutes then shut down, now only the blower will come on...no furnace, then it shuts down. I checked the pc board and the indicator light was blinking once every 3 seconds or so, indicating limit switch / air flow issue. I watched a Youtube video where a guy pulled out the furnace with ignitor electrodes. He showed how you could hit the reset, get the blower going, then observe if the electrodes were igniting. Mine did not spark. they were a bit corroded, so I sanded them clean and still...no spark. The Youtube guy stated at this point, it could be the board or the part that had the electrodes. Any way to determine which would fix this? I see evidence that suggests this circuit board has been, at minimum, unscrewed and possibly replaced. Based on what I read, that because many of these boards are cheaply produced in china, that this one might have "gone bad"?