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8. Why doesn’t the display light come on
when I press a button? Why don’t I hear
a beep when I press a button?
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 BATTERY. 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 caution-
ary statement at right. If conditions permit,
use the or buttons to move the
temperature above or below the setpoint
temperature. See OPERATING YOUR
THERMOSTAT.