First, locate the battery cover on the back of the thermostat.

Honeywell thermostat rth2310b battery replacement. How to reset honeywell thermostat after replacing batteries. Put the new batteries in the compartment and slide the protective plate over them. Honeywell thermostat 5.2 models rth2300b and rth221b can be a challenge to open, to access the batteries.

9 images about honeywell rth221b1000 wiring diagram : The following are famous models and series of honeywell thermostats and how to replace the batteries in each of them: Locate the batteries by removing the battery compartment tray or cover or by removing.

Watch this video and you will kno. This icon will flash for 120 days, then the thermostat will cut power to the heating/cooling unit. Honeywell programmable thermostat rth2310 installation guide rth2310.

Backlit display is easy to read. Then, use a phillips screwdriver to remove the two screws that secure the cover in place. How to change battery in honeywell thermostat rth2310b :

Remove the older 3 batteries and replace them with 3 new aaa batteries. All honeywell thermostats that have batteries store the batteries in the control panel. Push the battery cover closed.

Honeywell thermostat battery replacement | how to change batteries. Open the front cover by pulling the front cover out gently. 3.7 battery replacement indicator an icon appears when the batteries need replacement.