I have a pleasant hearth ph50cabps that was installed last year and has not had a ton of use until recently. Everything has been working until yesterday the auger stopped turning. Emptied hopper took off auger plate looking for a jam didn't see one but cleaned it out. Checked the vacuum switch and hose both seem fine. I put a small amount of pellets in and the auger motor started and the auger was working properly so I let it run for 10 minutes before shutting it down. I put the auger plate back on filled it half way with pellets and now it won't feed again! Any thoughts?