Owner's Manual
Page 11
Install fresh batteries when the REPLACE BATT warning begins flashing. Batteries provide backup power to remove thermostat from wallplate. Turn thermostat over, insert fresh AA alkaline ... 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. Battery replacement Pull at bottom to the display during power interruptions. M29422 PRO TH3110D / TH3210D M29421 Batteries are optional (for more than a month. Replace batteries...
Install fresh batteries when the REPLACE BATT warning begins flashing. Batteries provide backup power to remove thermostat from wallplate. Turn thermostat over, insert fresh AA alkaline ... 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. Battery replacement Pull at bottom to the display during power interruptions. M29422 PRO TH3110D / TH3210D M29421 Batteries are optional (for more than a month. Replace batteries...
Owner's Manual
Page 12
... power switch at heating & cooling system is on. • Make sure furnace door is closed securely. • Make sure fresh AA alkaline batteries are correctly installed (see page 5). does not respond • Set system switch to respond. 69-1776EFS-01 10 Most problems can be corrected quickly and easily. ENGLISH Operating...
... power switch at heating & cooling system is on. • Make sure furnace door is closed securely. • Make sure fresh AA alkaline batteries are correctly installed (see page 5). does not respond • Set system switch to respond. 69-1776EFS-01 10 Most problems can be corrected quickly and easily. ENGLISH Operating...