Napoleon Pellet Stove Problem - Cracked Firebox
My Napoleon NPS40 pellet stove is less than 5 years old and it recently developed a hairline crack in the steel plate of the firebox. The crack is about 3 inches long and runs along the left side of the pellet tube. I am wondering if I can just use some furnace cement to fill this crack or does the stove need to be repaired by a welding process. Not sure how/why the crack developed.
Thanks for any suggestions.