Quote:
Originally Posted by ajchadon84
I’m having the same issue and ours is permanent as well. It’s so frustrating!
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If the fan turns on but the furnace makes no attempt to ignite (you can't hear any clicking sound of the igniter sparking) then the issue is pre-ignition. Most common issue is the sail switch. They can go bad but usually they are just dirty. The fan can blow lint into them preventing them from making contact. If you have good access they are easy to check and clean.
If the sail switch is OK then it's possible it's the main control board. A little spendier but fairly easy to swap out.
How old is your trailer? It's also possible that just jiggling the various wire connections on the main board can solve it as well. Those contacts can sometimes need a little help from time to time. I've had this solve the issue on 3 different furnaces.
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Jeff & Sandi (and Teddy - 7lb Schnorkie)
2018 Montana High Country 305RL
2015 RAM 3500 Crew Cab 4x4 DRW
Demco Recon Hitch on RAM Puck Ball