104.3 First power up sequence and configurationTo power up the thermostat you have to put the batteries inside. Then thermostat will display following sequence:1243Remove the protection foil and insert2xAA batteries by removing frontcover....then thermostat will display thesoftware version.After that, thermostat willautomatically power up and it willdisplay all icons...When thermostat is succesfullypowered up, main screen will bedisplayed.