My pellet stove (2008 New Englander 25PDVC) is shutting itself down and the bottom auger stops. When I take the bottom auger motor off and hook it up it still turns but not when attached to the auger. I had to order a new vacuum switch and have circumvented the current one so that it still runs and it was doing fine for about a week. I also ordered a combustion blower because it was making a lot of noise. anyone have any idea why it would turn itself off? The first time it happened I made sure to clean everything. Then it ran for about an hour or two and shut down again.