I have been running mine on low with the fan speed on high. The other night when the outside temp dropped to 30 I open the feed gate all the way and left the stove on low with the fan still on high, it kept the house nice and warm.
This is my first full year with the stove but I find leaving it on low and running constant kees the house more evenly warmed.
Where is this low setting you are talking about? I know about my 'fan speed' switch (hi\med\lo) on the right side of stove, and I know about the feed gate in the hopper, but I don't know of any other settings.