4.What happens if the electricity goes off or is manually shut off?
If you have not installed a 9 volt alkaline battery, the display will go blank and the program will be lost in approximately one minute. When electric-
ity is restored, the thermostat will maintain a heating temperature of 64°F and a cooling tem- perature of 82°F until you reenter your program. Setpoint temperature will not be displayed.
If a fresh 9 volt Energizer® alkaline battery is installed, the program will be maintained for about one week with no 24 VAC power present to the thermostat. See OPERATING YOUR THERMOSTAT.
5.Why can’t I program the thermostat in the AUTO mode?
The thermostat can only be programmed in the HEAT and COOL modes. See PROGRAMMING YOUR THERMOSTAT.
6. What can cause the thermostat display to freeze or go blank?
A completely blank display may indicate that power has been lost to the thermostat and the backup battery is also dead. However, if there is power to the thermostat and the display is blank or frozen, static discharge is probably the cause.
During periods of low humidity (especially during cold weather), you may feel or see a spark discharge when you touch the thermostat. This may cause the program to be lost or the thermo- stat to display incorrectly. To correct this, remove the thermostat from the wall and disconnect the battery. Wait about one minute, then
thermostat immediately, press SYSTEM until
OFF is displayed and replace the thermostat on
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