Just curious if anyone who has this stove knows what the C1 - C21 codes mean on the Display. If you press the Auger Delay and the Mode button at the same time for about 3 sec. C-1 displays and I know that the C-2 & C-3 are for the feed rate and C-4 & C-5 is for the draft fan rate, not sure what the others are for. Will appreciate any input you have on this mystery.