Comment from: Politicus
How about a runaway wood stove? My big, Vermont Castings one, which warms me up on cold days when I work on my basement computer started going crazy. I looked at the thermometer attached to the chimney pipe and it was at the top of the scale and the pipe was starting to glow red.
Thank God for the air intake controls!!! Closing them down brought the whole potential disaster to a happy ending, but I did have to open the basement window to cool things down, even though the temp outside is below freezing :)