How To Change Battery In Honeywell Wall Thermostat. The following steps are helpful to change the battery in honeywell thermostats. First, go to the honeywell website and find the thermostats page, or do a google search for honeywell thermostat.
This warning appears on the screen as a flashing if you fail to change them when they go dead, you will lose the date and time settings, but the other programmable settings will remain intact. The following steps are helpful to change the battery in honeywell thermostats. How to program honeywell rth2300 thermostat.
To change the thermostat modes:
Pushing down the tab on the top opens the battery compartment. Change your wall thermostat batteries once a year, or when the low battery indicator appears on the digital display. What kind of battery does this unit take? Changing the batteries (t4 & t4r only).