Honeywell Thermostat Reset: Simple Tricks for Quick Troubleshooting in 2024

1. If your home thermostat is mains powered, isolate the circuit via the circuit breaker to avoid exposure to live wiring. (Once the power is off, the thermostat may still be on as some models have a battery backup. Some models have a battery door that you can slide up to remove the batteries. For others, the batteries are installed in the back of the faceplate).
2. Carefully slide/pull the thermostat off the base plate, making sure not to damage the pins or clips. In some models, this is accomplished by pulling from the bottom of the device.
3. Take note of the model at the back and find the corresponding instructions below.
4. Reposition the thermostat back onto the base plate.

Performing a Factory Reset:

1. Press the Menu icon.
2. Scroll down to “Thermostat Information.”
3. Write down the four-digit code under “Date Code.”
4. Then, press the “back” arrow and scroll to “Installer Options.”
5. It will ask for a password. Enter the Date Code you just wrote down.
6. Select “Reset” and then “Factory Reset.”

Performing a WiFi Reset:

1. Press the Menu icon.
2. Scroll to “WiFi” and press on it.
3. Choose “Change Network.”
4. Pick the new WiFi network and enter the password.

Performing a Schedule Reset:

1. Press the Menu icon.
2. Scroll to “Thermostat Information.”
3. Record the “Date Code.”
4. Press the “back” arrow, and scroll to “Installer Options.”
5. Enter the Date Code for the password.
6. Select “Reset” and then “Schedule Reset.”

Performing a HomeKit Reset: 

1. Press the Menu icon.
2. Scroll to “Thermostat Information.”
3. Note down the “Date Code.”
4. Press the “back” arrow, and scroll to “Installer Options.”
5. Enter the Date Code as the password.
6. Select “Reset” and then pick the option titled “HomeKit.”

Performing a Factory/Schedule/HomeKit Reset

1. Power on the device
2. Press or hold down the menu button until the menu options come up
3. Press the left or right arrow keys until you get to the option: “Reset”
4. Touch on “Select” to confirm
5. Then, select the type of reset: “Factory”, “Schedule” or “HomeKit”
6. Press on “Select” to confirm the rest type
7. A confirmation screen will pop up, asking “Are you Sure.” Confirm your decision by touching on “Yes.”

1. Simply press the Menu and “Plus” buttons at the same time and hold them down for about five seconds.
2. This action will display the ISU (Advanced Setup Options) on the thermostat's screen.
3. Once you're in the ISU menu, use the Plus and Minus buttons to scroll through the various options until you find “Restore Defaults.”
4. Press on “Select” to confirm and this option will reset all of your thermostat settings back to factory defaults.
5. To reset your schedule, continue scrolling to the right, and you'll find “Reset Schedule.”

Factory Reset

1. Press and hold the Weather/Cloud button for 5-10 seconds.
2. Wait for the menu button to appear.
3. Scroll to “Factory Reset” and select it.
4. Choose “OK”, followed by “YES”.

Wi-Fi Reset

1. Press and hold the “Cloud” icon.
2. Scroll to the Wi-Fi option and select it.
3. Scroll to the Setup option and select it.

HomeKit Reset

1. Press and hold the “Cloud” icon.
2. Scroll to the HomeKit Reset option and select it.

Performing a Factory Reset

1. Press the “Menu” button.
2. Scroll down and select “Preferences.”
3. Scroll down further and choose “Restore Factory Settings.”
4. Press “YES” to confirm, and you're done.

Carrying out a Wi-Fi Reset

1. Select “Menu.”
2. Choose “Wi-Fi Setup.”
3. Follow the on-screen instructions to complete the reset.

Resetting the Schedule

1. Press the “Menu” icon.
2. Select “Preferences”.
3. Choose “Restore Default Schedule”.

Factory Reset

1. Ensure your thermostat is “On” 
2. Press on “System” 
3. Then, press and hold the center black buttons for 5 seconds
4. Choose “Reset Factory Settings”

Wi-Fi Reset

1. Disconnect the router's faceplate
2. Briefly unplug the wireless router 
3. Reconnect the power and faceplate
4. Press “System” on the thermostat 
5. Hold the middle buttons to access a new screen 
6. Set the left number to “0900”, and the right to “0”, then press “Done”
7. On your computer, choose “Thermostat Wi-Fi”
8. Connect to your home network

Schedule Reset

1. Tap on “System” on the thermostat.
2. Press and hold the blank box in the center
3. After a new screen pops up, change the left number to “0165” and the right to “1”, then press “Done” 

Factory Reset:

1. Press “Menu”.
2. Choose “Dealer Information”.
3. Note down the date code at the bottom.
4. Select “Done”.
5. Enter “Installer Options”.
6. Input the date code.
7. Choose “Reset to Default”.
8. Press “Yes”.

Wi-Fi Reset

1. Press “Menu”.
2. Scroll to “Wi-Fi Setup” using the Down arrow.
3. Select “Wi-Fi Setup”.
4. The Wi-Fi reset is now complete.

Schedule Reset

1. Press “Menu”.
2. Scroll to “Preferences” using the Down arrow.
3. Select “Preferences”.
4. Scroll to “Default Schedule” using the Down arrow.
5. Select “Default Schedule”.
6. The schedule reset is now done!

Factory Reset

1. Turn on the thermostat.
2. Press and hold the “Fan” and “Up” arrow buttons together.
3. After 5-10 seconds, release when the display changes.
4. Press the 4th button from the left until “90” appears.
5. Use the “Up” arrow to change the digit to “1”.
6. Press “Done” to complete the reset.

Wi-Fi Reset

1. Hold the “Fan” and “Up” arrow buttons on the thermostat.
2. Wait for the display to change.
3. Press buttons until “39” appears on the left side.
4. Use the “Down” arrow to change “1” to “0”.
5. Press “Done” to complete the Wi-Fi setup.
6. On a mobile device, access “Device Settings” and choose the thermostat's Wi-Fi network.
7. Connect and then open the Honeywell Thermostat Wi-Fi page using the IP address.
8. Select your home Wi-Fi network and press “Connect”.
9. A “Connection Success” message confirms completion.

Schedule Reset

1. Press and hold the “Up” arrow and “Fan” buttons.
2. Change the number on the left to “85”.
3. Change the number on the right to “1”.