my Napolean 1900p was causing me grief for quite a while til one day, after reading another user's post on an entirely different stove and how he was having problems with out of control draft (couldn't shut it down and get the secondaries going). I had secondaries, but not the REALLY GOOD ONES I suspected I should have. So it got me thinking, and I started looking at my draft rod (it seemed really loose and sloppy), and sure as chit, it was almost falling off of the unit! In my model of stove, if you take the ash pan out of the stove and lay down in front of the stove, look up at where the draft control slides in and out, you can see there are two sheet metal 'retainers' that hold the rod in position. The rod has two 'doors' tack welded onto it, one door closes off the primary air and the other closes off the secondary air, which are two seperate 'windows in a channel under the stove.
Both of those tin retainers were almost FALLING OFF! It looked as if whoever was in charge of making sure they were tight on the line in the factory didn't even check them.....the fact that they were loose allowed that draft rod to sag, and even when you had the draft completely closed, the air was going around the doors (there was at LEAST a 1/2" gap around them). So after tightening the sheet metal screws with a 1/4" nut driver, VOILLA....the draft problem was solved! Not only did I get awesome secondaries, I also got WAY longer burn times out of my unit....I mean HOURS AND HOURS longer on an overnight load. I used to have to get up in the middle of the night to reload the stove.......not any more.....
So check where the draft comes into the stove and make sure everything is kosher with the controller.....
It still makes me SICK to think of how much wood I wasted in that stove over the years due to that damm draft rod not being right.....I wonder if I can go after Napoleon for all that lost time cutting, splitting, stacking and WAITING FOR THAT WOOD TO SEASON