Atwood furnace fuel/air mixture too rich
My furnace is blowing smoke and the exhaust is full of soot after only a couple nights use. It's brand new. The intake air on these is forced air by the blower so I'm assuming rather than adjusting ai...
Forum Discussion
pnichols wrote:dougrainer wrote:
1. There is NO air/mixture adjustment
2. You state black soot. That means you have a inlet fresh air restriction which is usually a Mud dauber nest or insect nests. Don't care if you state new, the insects can get inside on day 1 or on the Dealers lot.
3. The furnace will have to be pulled to verify the problem. IF insect nests, NO WARRANTY from the OEM or Atwood. If this happened at the dealer, then you would have to go back thru him. Doug
Hmmm ... can't the OP just take the outside furnace cover off and run something flexible back and forth in the burner tube to clean out any insect stuff?
I've looked at my Atwood furnace and it seems easy enough to do. I actually did this to my hot water heater burn tube to clean it out after black smoke dirted up the outside of our RV above the hot water heater burner vent outlet. It was easy to do.
No, the Water Heater is just a short tube. The furnace has various chambers with sharp turns. Plus, the odds are the problem is close to his burner, which can only be serviced or checked by pulling the RV unless he has a model with an outside access door and the valve/burner can be pulled, but not likely he has that model on a new RV. Doug
