I went and turned the furnace on Thursday and set the thermostat at 40, I have the RV winterized so this was just for precaution it was supposed to get down in the teens the LP gauge showed 2/3 tank e...
Were you plugged into shore power? If not the battery may be discharged enough that the flow of air will not allow the sail switch to engage. When the sail switch does not connect, the gas valve that allows propane to flow to the burner will shut off.