Our Serenity pellet stove is about 4 months old with only around 20 bags ran through it. The other day it just quit burning. After about 15-20 minutes of running it stops feeding and the alarm said check hopper and fire pot, both are fine. Manual said 52C sensor bad, I switched wires to spare sensor on blower, same problem. It takes about 2-3 minutes at start up to get pellets to start glowing then feed seems to slow down, it might take 10-12 minutes to get a fire going, seems that’s to long to heat up 52C sensor. Has anyone else had this problem? Are there any air flow adjustments that might help? I’m going to try closing inlet hole a little. I finally got hold of Castle, they’re not sure either, he said maybe controller or auger motor? Any input would be appreciated. Thanks.