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3. When batteries are running low, a REPL
BAT message flashes for one to two
months before batteries run out com-
pletely. Replace batteries as soon as pos-
sible after message flashes.
MPORTANT
Although thermostat has a low battery
indicator, replace batteries yearly to
prevent leakage and thermostat and
heating/cooling system from shutting
down due to lack of thermostat battery
power.
4. If you insert new batteries within 20 to 30
seconds of removing old batteries, the
system retains current time and day. If the
display is blank, batteries are dead or
installed incorrectly. You must reset time
and day. See Setting the Clock section.
As a precaution, when leaving home for longer
than a month, change
batteries before leaving to
prevent system shutting
down due to lack of power.
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