8
Batteries are optional (to provide backup
power) if your thermostat was wired to run on
AC power when installed. If your thermostat
was not wired to run on AC power, then
batteries are required.
Install fresh batteries immediately when the
low battery icon appears. The icon appears
about two months before the batteries are
depleted.
Even if the low battery icon does not appear,
you should replace batteries once a year, or
before leaving home for more than a month.
If batteries are inserted within two minutes, the
time and day will not have to be reset. All other
settings are permanently stored in memory,
and do not require battery power.
NOTE:
When replacing batteries, alkaline
batteries are recommended.
Battery replacement
Insert fresh alkaline AA
batteries and reinstall
thermostat.
When the low battery
warning appears, press
gently to loosen the
thermostat and then
carefully pull it from the
wall mount.
