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re-enter 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 24VAC power
present to the thermostat. See OPERAT-
ING YOUR THERMOSTAT.
4. 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.
5. 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
thermostat. This may cause the program to
be lost or the thermostat to display incor-
rectly. To correct this, remove the thermo-
stat from the wall and disconnect the bat-
tery. Wait about two minutes, then re-
connect the battery. The thermostat will
revert to the factory preset program until
you reprogram the thermostat. If you don’t
want to reprogram the thermostat immedi-
ately, press
SYSTEM
SWITCH
until OFF is displayed
and replace the thermostat on the wall.
Then press
SYSTEM
SWITCH
until HEAT, COOL,