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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.
To correct this, remove the thermostat from
the wall and disconnect the battery. Wait
about two minutes, then re-connect the bat-
tery. The thermostat will revert to the factory
preset program until you reprogram the
thermostat. If you don’t want to reprogram
the thermostat immediately, press
SYSTEM
HEAT - OFF - COOL - AUTO
until OFF is displayed and replace the ther-
mostat on the wall. Then press
SYSTEM
HEAT - OFF - COOL - AUTO
until
HEAT, COOL, etc. is displayed, and press
a cooling temperature of 82°F until you re-
enter 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 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-