Learn how to install or replace the batteries in the CentraLite 3156105 thermostat.
What you'll need:
- Xfinity Home
- CentraLite 3156105 Thermostat
- Four AA batteries
Do you need a battery?
Make sure you have batteries before you proceed. Visit your nearest retail store that sells batteries or click the button below to order your replacement battery kit.
Call us at 1-800-XFINITY if you receive a low battery alert within 30 days of device installation.
How to install the battery
Before proceeding, make sure that your system is disarmed. Working on devices while the system is armed can generate false alarms.
Did you know? Before replacing the batteries in your thermostat, your furnace must be turned off and the thermostat should be removed from the wall.
Help protect our environment: Please properly recycle your discarded batteries. For your convenience, batteries are accepted for recycling at various locations. Check call2recycle.org or call 1-800-8-BATTERY (1-800-8-228-8379) to find a recycling location near you.
Is this your thermostat? Make sure that your thermostat looks like the one in the image below. If it does, you're in the right place to find out how to install a battery in your thermostat.
- Release the snaps holding the thermostat cover in place by gripping the top middle of the cover and pulling it away from the thermostat.
- Remove the cover completely from the thermostat. The battery compartment is at the bottom of the thermostat.
- Take a look: If batteries are already present, remove them by using your fingertip to gently pull one end of each battery up until that battery is loose and you can pull it free from the slot.
- Insert four AA batteries into the compartment with the negative (-) ends of the batteries facing the battery spring contact.
- When all four batteries are in place and facing the correct direction in the slots, the screen on the thermostat will light up.
- If you're replacing the battery, confirm that the low battery alert has resolved and the thermostat appears on your list of connected devices in your touchscreen, Subscriber Portal, or the Xfinity Home app.
- If you're replacing the battery, confirm that the low battery alert has resolved and the thermostat appears on your list of connected devices in your touchscreen, Subscriber Portal, or the Xfinity Home app.
- Place the front cover over the thermostat, making sure that the xfinity logo is located on the bottom-right side of the thermostat.
- Then, press the cover down onto the thermostat until it snaps into place.
- Then, press the cover down onto the thermostat until it snaps into place.
Additional information
Visit our Online Support Center to find common solutions.
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