Luke Button

White Rodgers Thermostat 1F78 Reset. Turn your thermostat back on. Hold the backlight and the menu buttons simultaneously for ten seconds.

White Rodgers 1F78151 70 Series Thermostat, Single Stage
White Rodgers 1F78151 70 Series Thermostat, Single Stage from www.ecomfort.com

Display backlight ( 1:16 ) 4. Furnace power switch to off. Replace the wires, batteries, and cover plate.