i got my digital control going yesterday. i am guessing it does not work like a conventional thermostat, in that the thermostat does not control the temperature. the thermostat tells you what the temp is inside. the heat is controlled by the knob on the front, which controls the amount of time the auger runs. once you install it, you need to calibrate it, by press a microswitch until the thermostat reads the temp you have it set for. like i said, it is a guess on my part. unless the knob controls the speed of the auger, according to the temp, if the temp is cooler, the auger speeds up, if it is cooler, the auger slows down. any thoughts?