Im replying to this topic as I recently found Propane flex hose problems:
Short story: you need to inspect the rubber hose that runs under your seating area slideout to the heater under the dining table couch. Make sure it is not kinking or caught on something, or damaged in any way. make sure there are no screws or sharp objects protruding into this space that the line is supposed to travel freely in. In my unit I had to remove a drawer and remove flexible webbing covering the access hole to inspect the access area under the drawer where the hose is supposed to be able to move freely.
Long story: I recently has issues with my furnace under the dining table not heating as is was supposed to. It would operate, but only when the slidout was in a partially closed position. I inspected the rubber fuel hose that is routed from the driver side storage cabinet up through the floor and into the slidout space. I found the line was kinked around and caught on a screw that penetrated through the floor into the area under the slidout. The hose outer rubber layer was damaged by the kinking and rubbing on the screw, but not leaking yet. When I found it I was seriously shocked by the potenetial danger of fire and explosion this damaged propane hose could have had. I will post photos of what I found when i have more time.
