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Operating Manual
14
ENGLISH
NOTE: Batteries are optional (serving as backup power) only if your
thermostat is connected to 24 VAC.
I
nstall two fresh AAA batteries when the low-battery icon
flashes on the screen. The icon appears for 60 days before the
batteries are depleted.
Replace batteries once a year, or when you will be away for
more than a month.
Most settings are stored in non-volatile (permanent) memory.
Only the clock and the day must be set if the thermostat was
without AC power or batteries.
NOTE: The low-battery icon will not appear when the batteries are
depleted if the thermostat is connected to 24 VAC.
Battery replacement
Set the System switch to Off before removing the
batteries. Otherwise, the heating/cooling system could
remain activated even when batteries are removed.