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press
RUN
PRGM
to start the normal program
function. See PROGRAMMING YOUR
THERMOSTAT.
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 five seconds. When
electricity is restored, the thermostat will
maintain a heating temperature of 64°F and
a cooling temperature of 82°F until you
reenter your program. Setpoint tempera-
ture 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 OPERAT-
ING 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 PRO-
GRAMMING 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. How-
ever, if there is power to the thermostat and
the display is blank or frozen, static dis-
charge 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 ther-
mostat. This may cause the program to be
lost or the thermostat to display incorrectly.