I have a PVC a 25 pdbc manufactured 2014 it'll go into startup mode I get great flame great everything once it gets past that 20 minutes it goes right to e2 shutting down now it is a used stove and I do have like I think gasket issues just not sure how sensitive those things really are but wondering what I can do and also even when the stove does shut down now that I go to cold the exhaust blower does not turn off I've been told that my board control panel might be shot any help would be great