Honeywell 1-Heat/1-Cool Owner's Manual - Page 13

Review Battery Tips 1. Replace the batteries as soon as Replace Battery 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. Nonalkaline batteries do not last as long and can leak, causing damage to the thermostat. 3. Although the thermostat has a Replace Battery indicator, replace the batteries once per year to prevent the thermostat and heating/cooling system from shutting down due to a 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. 69-1713 13