Atwood Furnace, Hydroflame,
Thanks for posting the results. I see you have your problem solved.
If you use the search option on the top blue bar, and type in Atwood, or Hydroflame, you will get a lot of info on the furnace. The Atwoods are a very common furnace and used in many Rv's large and small.
I have also spent considerable time solving my furnace problems, that ended up being poor contact at the circuit board plug.
It is nice to have a good warm unit now that winter is approaching!
The furnace should be serviced every year. Many posts give tips on this.