How do I reset my old Honeywell thermostat?

How do I reset my old Honeywell thermostat?

Reset to Factory Default Settings

1. Check if your thermostat is on (it should be on).
2. Select ‘System’.
3. Select the center black buttons and press and hold them and wait for 5 seconds.
4. Select ‘Restore Factory Settings’.
5. The reset to factory default settings is complete.

How do I reset my Honeywell thermostat without battery?

To manually reset a thermostat, first turn off your thermostat using the power control switch. Then, turn off the breaker on your electrical panel. Wait about a minute, and then turn both back on. This should give the system time to reset.

How do you change the battery in a old Honeywell thermostat?

To change the batteries on a Honeywell thermostat:

1. Turn the power off at the circuit breakers.
2. Remove the battery compartment from the baseplate.
3. Remove the old batteries.
4. Replace the batteries.
5. Replace the battery compartment to the baseplate.
6. Turn the power on at the circuit breakers.

Why my Honeywell thermostat is not working?

A Honeywell thermostat may be malfunctioning generally, and this is the cause of its inability to hold temperature. If your screen is blank and unresponsive, or flashing, it may mean your thermostat’s batteries are dying. Dirt or debris within the thermostat can also cause problems.

Do old Honeywell thermostats have batteries?

Not all Honeywell thermostats require batteries. But some do, usually the ones with an LED display. All the thermostats that require batteries need 2 or more alkaline AA or AAA types.

Where is the battery in my Honeywell thermostat?

The battery compartment on a Honeywell thermostat is located on the side of the device. To remove it, first push the tab on the top of the thermostat. Then pull it to remove the compartment — it should slide right out.