Quadrafire contour vacuum switch

I do not think it matters which way the go on
The switch is just on /off
So when there is vac the switch is on /no vac. it is off

I agree. I know for sure on my stove that the polarity of the wires to my vacuum switch doesn't matter. When there's vacuum, the switch just connects the two wires together.

Page 20 has the wiring diagram ... http://downloads.hearthnhome.com/installManuals/250_5583.pdf

All are correct, ac powers the stove, so no polarity issue.

Ok sounds like progress. When bypassing the vac switch, the auger turned? This means vac is not being developed in the stove, or its not being sensed. Has the vac sw hose been checked, blown through toward the stove, not the switch? The nipple on the drop tube that the vac hose connects to may be blocked. Air flow through the stove is not adeqjuate, does the exh blower run normally? Are all exh passages clean? Things to think about and check. Bad vac switches are rare, bad new switches, even rarer.....