Furnace Issue

[jaybird]

Morning All- went to turn on furnace today in my 2014 Mountainier and no go. It has been working just fine until today. Besides confirming I have propane, after that I have no clue where to turn next. Any thoughts would be greatly appreciated.

[L0veless]

first what is it doing?
here is kind of a sequence
thermostat sends signal to heater,
heater turns on fan, sail switch senses air movement
heater ignites, thermal switch senses heat and continues heating.
so if your not getting ignition probably sail switch
if you get ignition then shuts down after 5-10 seconds or so probably thermal switch
after 3 cycles unit shuts down and you have to pull fuse for 10 seconds and let it reset.
hope this helps

[L0veless]

also try your connections at the circuit board and there should be a sequence of lights on the board to help diagnose.

[jaybird]

Fuse is good. Does not start up at all. Could I have done any damage with water when I washed the RV the other day

[DQDick]

Yes, the newer furnaces allow water to enter the furnace and short out the board. Take the cover off and see if there is water in there. After a rain with strong wind mine would short the board out everytime and I'd have to take a hair dryer and dry it out. Since I put butal tape around the edges I have had no further issues.