Furnace Probs - New 5th Wheel Owners

What you have described is failure to light the furnace! The furnace will try and light, but if no ignition it will turn off. As discussed, the most likely cause is air in the gas lines, since you ran out of propane, and then disconnected the tank. If you have run your stove top since fill up and are sure you have purged all the air, go to the thermostat, and turn everything off, no AC, no reverse cycle, no furnace, completely off. Wait 30 seconds, then turn on furnace, if it still cuts out you have a igniter problem, and will have to call someone to check out the furnace! Good luck!!