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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 ther-
mostat. 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 OP-
ERATING 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 min-
utes for the compressor lockout to expire. If
the system is still not running, read the
following cautionary statement on the
next page. Then, if conditions permit,
use the or buttons to move the
temperature above or below the setpoint
temperature. See OPERATING YOUR
THERMOSTAT.