Review Battery Tips - Honeywell RTH5100 Operating Instructions Manual

1. Replace the batteries as soon as Replace Batt
flashes in the display. The Replace Battery
indicator flashes in the display two months before
the batteries run down completely.
2. Always use fresh AAA alkaline batteries.
Non-alkaline batteries do not last as long and can
leak, causing thermostat damage.
3. Although the thermostat has a Replace Battery
indicator, replace the batteries once a year to
prevent the thermostat and heating/cooling system
from shutting down due to lack of battery power.
NOTE: Replacing the batteries once a year also helps
prevent battery leakage that can damage the
thermostat.
4. As a precaution, replace the batteries when leaving
your home for more than a month to prevent your
heating/cooling system from shutting down if the
batteries run down completely.

Review Battery Tips

13 69-1722