PARTS OF THE THERMOSTAT
The Back of The Thermostat Body
Turn the thermostat body over. On the back are the 9 volt Energizer® alkaline battery and the option switches.
1.The 9 volt Energizer® alkaline battery pro- vides power to the thermostat when the 24 VAC power is interrupted (for example, when you remove the thermostat from the wall for programming). A fresh battery will maintain the stored program for approximately a week. If power loss is long enough for the program to be lost, the thermostat will automatically
return to the factory programmed tempera- tures (64°F heating and 82°F cooling) when power is restored. You must reprogram the thermostat if this happens.
If the word BATTERY is flashing in the display window, the battery is low and should be replaced with a fresh 9 volt Energizer® alkaline battery. The battery will provide power for all functions except the display light, which works only on 24 VAC power.
Battery | |
W18 |
|
Option switches |
BACK OF THERMOSTAT BODY
6
