I have a Breckwell Big E Pellet stove that I am having issues with it lighting. It I hooked up to a thermostat and when it is running seems to run good. Once the room reaches temps turn it turn off but then it is hit or miss if it will light again. When I come to the stove the burn pot is empty and the #3 light is flashing. I have replaced the proof of fire thermo disc and the supply air fan. Verified it is getting the call from the thermostat. When push the on/off button stove will ignore and run good till room reached temperature. Did the complete cleaning and still having issues. Any idea why would cause the stove to trip out and not light?