Hello everyone. I’m fairly new to the pellet smoker crowd. Just bought an 820 pro a couple months ago and i started having issues with it this week. Started the smoker up on smoke and waited for it to light up. Then turned it up to 250 and all was well. Temps came up fine and I threw my ribs on. Came back about 2 hours later and the smoker was sitting at 140* and the burn pot was completely overflowing with pellets. I had vacuumed out the smoker and burn pot before starting it up so everything was clean. My cousin bought an 820 around the same time as me and he’s having the exact same issue. What causes this?