My PB1100PSC2 failed to complete startup and threw a ErL code. I checked the hopper and found that moisture had come in the corner where there is a flat metal plate that can be removed to allow pellets to fall through a chute for priming. Water had seeped in and saturated the very corner, resulted in saw dust instead of pellets in that area. that material then packed the bottom of the pellet hopper, making it stop feeding pellets when the auger rotated. Simple fix, but a poor design. If it happen again, I will calk it closed to prevent water from getting in. To fix it, I took the inner grate out of the hopper, scooped out the viable pellets and vacuumed the remaining material out of the hopper. Then, because I was too cheap to throw away the rest of the pellets, I used a strong fan above the hopper as I poured the pellets back in, blowing all the loose saw dust away, yet allowing the pellets to fall into the hopper. Hope this helps.