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The display light and audio prompting (beep)
only work when the thermostat is on the wall
and 24 VAC power is present to the thermo-
stat. These features will not work on battery
power alone. See OPERATING YOUR
THERMOSTAT.
9. The display is flashing BAT. What does
this mean?
The 9 volt battery installed in the thermostat
is low and should be replaced with a fresh 9
volt Energizer
®
alkaline battery. See OPER-
ATING YOUR THERMOSTAT.
10. Why won’t the system turn on, even
though the thermostat display is func-
tioning normally?
Either the compressor lockout feature is in
operation or the thermostat is not currently
calling for heat or cool. Wait about 5 minutes
for the compressor lockout to expire. If the
system is still not running, read the following
cautionary statement. Then, if conditions
permit, use the or buttons to
move the temperature above or below the
setpoint temperature. See OPERATING
YOUR THERMOSTAT.
If the outside temperature is below 50°F,
DO NOT use the button to move the
temperature below the setpoint tempera-
ture. Property damage may result due to
compressor slugging.
11. Why doesn’t the temperature change at
the time I programmed?
There may be a number of causes for this
situation. The following are primary rea-
sons.
CAUTION
!