I just recently installed an Englander pah pellet stove in my basement garage. I have a thermostat hooked to it, it has been burning excellent but the fire went out on me 2 times so far. I have my thermo set at 67 deg. and my stove turned down to 2-2 and it seems to be just barely idling most of the day. Today I got home from work and the fire was out but I had a handful of fresh pellets laying in the pot. Any ideas whats going on here? Is my thermo too low and the fire is eventually going out? too much buildup of ashes? It burns for 2 days then it seems to go out. This is my first pellet stove so im trying to find the sweet spot.