First of all, your furnace should not have a pilot. Suburban furnaces have been electronic ignitions since at least the early 80s. Secondly, the air flow past the flame and through the heat exchanger is a special balanced system The inlet and the outlet are close to each other, so that any change in air flow on the inlet is balanced on the outlet, so the flow past the flame is always the same, regardless of if the coach is going down the road, or stationary. Hopefully Suburban will tell them NO, as this would missbalance the system.
If it is having trouble staying lit, I would suspect 1 of 2 things. Most common cause of furnace problems is mud spiders building nests in the inlet. However in your case, I would think there may be a clog in the outlet, causing the air flow to not move as intended over the flame. The second possibility would be that the boiler is rusted and no longer burning correctly. Propane has a lot of moister in it, so it tends to cause the boiler to rust. I've had to take my boiler out and take a hacksaw to the slots, to clean the rust out, as the clog up. The symptom was that I was not getting fuel near the sensor that tells it the flame is OK, so it would shut off. Once I cleaned the boiler, it works fine.
IRV2
