I have a 2007 Jayco Bunkhouse. The air and furnace stopped working. The furnace will cycle on approximately every 65 minutes. It will run if the propane is on, otherwise it will shut off. It will cycle in this fashion even with no thermostat. Air conditioner will not turn on at all. Also the fuse-able link blows the fuse immediately when hooked to the battery. Power has two cables to the battery one fused and one without a fuse. I am not sure where the fused cable terminates.