Dometic Furnace Stopped Working
Hoping there is an easy fix!
My Dometic DFMD35 was working fine for several nights then we had warmer weather for 3 nights and it didnít need to come on. I then had the propane tank filled. The next night it failed to come on. I got the flame signal on my interior control panel, but the blower did not turn on. My first thought was the propane fill may have caused this, but I cannot find anything amiss. I retried the start procedure many times to clear any potential air in the line. My propane water heater works fine, the furnace fuse is good, the furnace off/reset switch behind the furnace outside panel does not fix it.
SoÖI am beginning to think the failure after the propane fill was merely coincidental.
Troubleshooting further, I see a failure light sequence on the internal control board of a light flash every 3 seconds indicating an air flow problem. I am thinking the most probable failure is the sail switch. Iíll be in a spot where I can start to dismantle it in 2 days. We are in a spot now with power and getting by with a small electric heater until I get this fixed.
I thought I would reach out to the forum first to see if I am missing something obvious before starting the disassembly. Any thoughts?
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