Owner's Manual
Page 11
The warning flashes about two months before leaving home for backup power) if your thermostat was wired to the display during power interruptions. Turn thermostat over, insert fresh AA alkaline batteries, then reinstall thermostat. All settings are depleted. Install fresh batteries when the REPLACE BATT warning begins flashing. Batteries provide backup power to run on... before the batteries are permanently stored in memory, and do not require battery power. 9 69-1776EFS-01 ENGLISH Battery replacement Pull at bottom to remove thermostat from wallplate.
The warning flashes about two months before leaving home for backup power) if your thermostat was wired to the display during power interruptions. Turn thermostat over, insert fresh AA alkaline batteries, then reinstall thermostat. All settings are depleted. Install fresh batteries when the REPLACE BATT warning begins flashing. Batteries provide backup power to run on... before the batteries are permanently stored in memory, and do not require battery power. 9 69-1776EFS-01 ENGLISH Battery replacement Pull at bottom to remove thermostat from wallplate.