The use of the function key of the Changdi oven is: when fermenting, the temperature selection is set to 0. The automatic temperature on the machine is about 50 degrees. For your own control just adjust it slightly at about 30 degrees. Then in the function selection set to clockwise 2nd, long as if a dough dough image. The time selection is set to always on. (Because the fermentation time is not necessarily, the need for long fermentation to pay attention to their own time, short fermentation can set the time). Generally in about 10 minutes the oven temperature dropped, you can turn the oven on 32 degrees to keep warm for 5 minutes to raise the oven temperature, half