Nov. 2011 - UPDATE

DO NOT HOOK UP A WHITFIELD PELLET STOVE TO A GENERATOR OR DC CONVERTER (Car battery converter to AC) unless they are "pure sine wave".  Yes, they work but when you turn it off and try it the next day... it will not work and you'll get weird lights going on/off. 
After you plug into "real" AC you will have to press the start button a few times to straight out the controller !  A few people have confirmed this as well as my 14 year old unit.

SO until I can find out this problem... no "modified sine wave" converters until I check this problem out.   I tried a UPS into my DC converter but without a "real" ground no UPS will start.  A UPS will smooth out AC current.

If you need to run your stove on non-AC power.  Get a "pure sine wave" converter.  This company sells a 300W version that will work with 200W (aprox) left for a light or whatever.  Go to http://www.theinverterstore.com/