Operating Manual
10
Battery replacement
Batteries are optional (to provide backup
power) if your thermostat was wired to run
on AC power when installed.
Install fresh batteries immediately when the
RREEPPLLAACCEE BBAATTTTEERRYY
warning begins flashing.The
warning flashes about two months before the
batteries are depleted.
Even if the warning does not appear, you
should replace batteries once a year, or before
leaving home for more than a month.
Batteries provide backup power to the display
during power interruptions.All other settings
are permanently stored in memory, and do not
require battery power.
Press and pull to remove
Insert fresh AA alkaline
batteries, then reinstall
battery holder
Replace Battery
