Owner's Manual
Page 11
M29422 PRO TH3110D / TH3210D M29421 Batteries are depleted. The warning flashes about two months before leaving home for backup power) if your thermostat was wired to run on AC power when installed. Install fresh batteries when the REPLACE BATT warning begins flashing. All settings are permanently stored in memory, and ...
M29422 PRO TH3110D / TH3210D M29421 Batteries are depleted. The warning flashes about two months before leaving home for backup power) if your thermostat was wired to run on AC power when installed. Install fresh batteries when the REPLACE BATT warning begins flashing. All settings are permanently stored in memory, and ...