You will probably find two of them there.

How to open honeywell thermostat to change battery. How to reset honeywell thermostat after replacing batteries. How to change honeywell thermostat battery step 1: Remove the old batteries and replace them with new ones.

All honeywell thermostats that have batteries store the batteries in the control panel. Hold on the upper and lower side of the faceplate. Remove the wall plate from the device.

The thermostat comes with a sliding battery compartment and you do not have to open the cover from the base plate to replace the battery. Replace them with new ones. Replace batt air conditioner if central air thermostat not working.

How to change battery in honeywell thermostat cool on but not working ac. How to fix a honeywell thermostat that isn’t working disconnect all of the cables from the thermostat. Locate the batteries by removing the battery compartment tray or cover or by removing.

Put the thermostat in the ‘off’ position and remove the batteries. Turn it over to access the battery compartment. Gently pull the thermostat’s bottom and remove the unit from its wall plate.

Remove the bad battery from the thermostat by unscrewing all the screws holding it. Before you change the battery, make sure that your thermostat is turned off. Depress the tab to open the battery compartment.