djs_net said:OK, the leaf blower trick isn't going to happen right now (long story). I did take the exhaust pipe/combustion blower off and cleaned it up real good with a brush, vacuum and ended up using the leaf blower to BLOW from the bottom of the chimney piping upwards. A little ash got in the house but mostly it seemed to clear out the exhaust vent very well. At this point I find it hard to believe that it's so plugged that it's tripping the air switch, but it's STILL shutting down with a #2 error. If it is the exhaust that's causing the error, I'm thinking it's somehow blocked at the cap. This doesn't make sense to me since the install was so recent.
I don't see any option at this point except to call the installer and pay to have him go on my roof and check the exhaust (again). This sucks.
You still have the area from the combustion blower cavity all the way to the firebox, this path would end at the areas above and below the heat exchanger tubes on both the right and left side of the firebox.