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17 69-2093EFS—07
Battery replacement (outdoor air sensor)
M28443
M28444
Replace outdoor sensor batteries when the
REPLACE BATTERY OUTDOOR
warning begins
flashing on the thermostat. The warning
flashes about two months before the
batteries are depleted.
Remove the sensor from the bracket, remove
the cover and install 2 fresh AA lithium
batteries.
After batteries are installed, the sensor will
automatically restore communication with the
wireless network within a few minutes.
Remove sensor
from bracket
Remove cover and
install 2 fresh AA
lithium batteries