What Should I Do With My Great Lake Auto Draw Off If I Am Having Trouble Customizing My Efficiency Setting?

In order to customize the efficiency setting, the LCY mode must be set to 0. From the home screen on the Stack Temperature module, press and hold SET for 4 seconds. The efficiency setting will appear. From there, give the SET button another quick tap to toggle to the LCY mode. Change the LCY mode to 0. Then, quick tap SET to return to the efficiency setting.