I hope u did not leave it on for 4 hours on 5. If you read the manual it states only use 4/5 for about 20 min. I have never had the need to run mine higher than 3 and it will cook me out of the houseI have a brand new BIG E SP1000.. It was fired up once and it workd GREAT. I left it on for about 4 hrs.. Two days later, I went to start it up, and it worked for about a minute, then nothing. I checked the board and the fuse was blown. I bought a new fuse installed it. Same thing works for about 30 seconds and it blows. I noticed it blows when the auger heat level comes on. I have it on level 5..Do I return the stove and buy another brand??? It is BRAND NEW. I bought it at Riches in Lynnwood, WA.. Do I return the stove????