press RUN to start the normal program
PRGM
function. See PROGRAMMING YOUR THERMOSTAT.
4.What happens if the electricity goes off or is manually shut off?
If you have not installed 3 “AA” alkaline batteries, the display will go blank and the program will be lost in approximately one minute. When electricity is restored, the clock will reset itself to 12:00 PM (noon) and
the thermostat will maintain a heating tem- perature of 64°F and a cooling temperature of 82°F until you reenter your program. Setpoint temperature will not be displayed.
If fresh “AA” Energizer® alkaline batteries are installed, the program will be main-
tained for about one year with no 24 VAC power present to the thermostat. See OP-
ERATING YOUR THERMOSTAT.
5.Why is the fan running constantly, re- gardless of system operation?
You have programmed the fan to run con- tinuously during this program period. To
override the programmed fan, press FAN
ON - AUTO
until FAN AUTO is displayed. To change the programming, 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 batteries are also dead. However, if there is power to the thermostat
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