I have an older Quadrafire Santa Fe, 2004, with a vacuum switch that works some of the time but not all. Some times it works on start up, some times I have to hand feed, then once it is burning it will keep feeding. Some times hitting the reset but will kick it in, then other times not. I'm sure it is the switch because if I jumper around it all is well. The stove is clean, the vent is clean. I replace door gasket and exhaust blower gasket. Don't know what else to do.
Carl
Carl