[Alpine Custom Upgrade]

Originally Posted by MrWonderful

Hello All,

We have a 2021 Keystone Bullet 290BHS with Dometic DFMD0121 furnace. The furnace blower runs for a bit then cycles off. I don't hear any attempt at lighting, have run the stove to check for air pockets in the propane line, and have been told to check the sail switch. I removed everything to pull it out but it seems stuck. Is it siliconed to the wall? Do I need to remove the exterior exhaust bezel to try to scrape it free? I don't want it down for two months at the dealer waiting for the repair mid season.

thanks!

Not sure if your furnace is like a central gas furnace in a house but there may possibly be a "flame sensor" rod that needs to be cleaned with a steel wool pad. It would connect by wire to the main board if so.
On a house unit, if the flame sensor goes bad then the fan stays on but no gas and no ignition. Have you removed power from it and returned power? (turn the breaker off and back on)(reset the board)? Just a thought and trying to help.