New to the site here. But having a problem with my furnace. The travel trailer is a Forest River Vibe. 2017 model. We turn on the furnace and sometimes it will fire up but other times no. I did a search on line and YouTube and it gave me pointers what to check. One of the things it would do it act as tho it was going to cycle to start and would stop all together. No fan blowing or nothing. So to make a story short I pulled the unit out. Went through everything using a multimeter. Every thing checked out. I hooked up a battery and watched it cycle through 4 different times.. Never did shut down. Getting spark. Propane solenoids were opening. Forced air thru the propane tube and air was coming out of the burner nozzle. So I'm going to reinstall the unit and hook it back up, the question I am asking I guess is if the blower shuts down after trying to start am I looking at the thermostat on the wall ? Or maybe a short somewhere?