I have a 2002 Castile Pellet Stove. It was having over heating problems and also blowing fuses. Since it was so old, I just decided to replace a bunch of stuff and see what happened. I had replaced the vacuum switch not long ago. So I replaced the combustion blower, exhaust fan, thermocouple, igniter, 3 snap disks. Seems to have fixed whatever the problem was and is running fine except for when the call light comes on, i have to push the reset button....then works fine. So of course, this doesn't work for me if the call light comes on in middle of night! The problem seems to be intermittent and I have a memory of this problem happening to me last winter also. Having a hard time finding an explanation for EXACTLY what the reset button DOES or puts into motion so i can pinpoint the problem. Replace the control box?? Thanks for any help! Pam