Replacing Your Batteries
Not all thermostat models require batteries. If your thermostat has batteries, a low battery warning flashes on the home screen for approximately 30 days.
NOTE: If the batteries are not replaced when the Low Battery warning is flashing, the LO batt screen will display continuously and the thermostat will not operate until the batteries are replaced.
M19963
NOTE: Although the thermostat has a low battery indicator, replace the batteries once each year to prevent leakage and to prevent the thermostat and heating/cooling system from shutting down due to lack of battery power in the thermostat.
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