I would definitely call Central Boiler directly. If your dealer isn't helping you they need to know about if if nothing else.

Why isn't your auto-start working?

Your fan should turn on low right away. If your controller goes into medium or high modes, your fan will jump up to higher settings (or it should). You controller won't go into medium mode unless it detects the fire is going, and it won't go into high mode unless your burn pot is at least 800 deg F. This should all be in your manual.

You are probably like me and don't like to be a burden, but you paid too much for this unit to put up with it not working. Mine has been working fine (knock on wood) for 4 years now without any issues at all other than minor stuff like the original aerator melting.

I just recieved a letter from Central Boiler that my dealer is no longer a dealer for them. MMMM-maybe my call to them didn't fall on deaf ears after all. Anyways my M250 is up and running like a top. The fan was the culprit and not covered by warranty. I just picked up 2 tons of somersets yesterday and that should get me through the rest of the year, I hope. Just wandering has anyone ever tried to convert to wood to finish out the season? My cousin has a M175 and he does it every year. He takes the agitator out and measures the water temp and when water begins to cool it kicks on a fan he adapted to fit which blows air to the burn chamber and fires everything up. When the water temp gets hot enough it turns the fan off. Any thoughts? Not that I'm going to do this but it would be perfect for those warmer days when you don't need all those BTU'S from pellets or corn. I know my unit takes 1 bag of pellets a day just to keep the water hot. What do you think?

Very interesting burning wood in warmer temp. When it starts warming up i usually shut my boiler down when i run out of corn/pellets.