How to Reset a Honeywell Thermostat

Posted by: Mas Broto
How to Reset a Honeywell Thermostat

Are you struggling with the settings on your Honeywell thermostat, or do you simply want to reset with default settings? Well, you’re in luck! Today, we will guide you through the quick steps to program or reset your Honeywell thermostat. It’s a straightforward process that can make a significant difference in how efficiently you manage your home’s heating and cooling.

Why reset?

Well, sometimes your Honeywell thermostat might act up—maybe it’s possessed by a temperature demon or it’s just being finicky. Maybe you’ve just moved in, or you’re updating your Wi-Fi password. Resetting can exorcise many of these digital hiccups, and it’s also a part of a healthy maintenance routine.

How to Reset Your Honeywell Thermostat: A Model-by-Model Guide

Now, roll up your sleeves—it’s time to get to work. We’ll review the general steps that work on most models, like finding the reset button or powering down the system. But remember, some models like to be unique, so I’ll mention any special instructions.

Step 1: Access the Main Menu

Honeywell Thermostat Main Menu

To begin programming your Honeywell thermostat, the first step is to access the main menu. This is typically done by pressing the ‘Menu’ button on the thermostat. This is your gateway to various settings and preferences that will allow you to tailor your home’s HVAC system to your needs.

Step 2: Navigate to Preferences

Once you’re in the menu, you’ll want to scroll down to find the ‘Preferences’ option. The design of your specific model will determine how you scroll—some models use buttons, while others have touchscreen capabilities.

Step 3: Restore to Factory Default

Within the preferences submenu, you might find several options, but the one you’re looking for is ‘Restore to Factory Default.’ Selecting this option is crucial if you wish to reset your thermostat.

Step 4: Confirm the Reset

The last step is to confirm your choice to restore factory defaults. When prompted, click ‘Yes’ to complete the process. Your Honeywell thermostat will then revert to its original factory settings.

From the old-school dial types to the snazzy Wi-Fi-enabled wizards, each Honeywell thermostat model has its own little quirks and features. The key to a successful reset lies in knowing your model, usually found on a label on the back of the device.

For T9 Models (RCHT9510WF, RCHT9610WF):

  1. Press the Menu icon.
  2. Scroll and select “Advanced Setup”.
  3. Choose “Reset”.
  4. Select “Factory Reset”.

For T10 Models (THX321WF):

  1. Press the Menu icon.
  2. Navigate to “Thermostat Information” and note the “Date Code”.
  3. Go back and scroll to “Installer Options”.
  4. Enter the Date Code as your password.
  5. Select “Reset” then “Factory Reset”.

For T5+/T5/T6 Models:

  1. Press and hold Menu.
  2. Use the arrow to find and select “Reset.”
  3. Continue to “Factory Reset” and confirm.

For the Smart/Lyric Round (TH8732WFH):

  1. Press and hold the Cloud Icon.
  2. Press “i” until you get to “Reset,” then select it.

For Smart WiFi 9000 Models (Various):

  1. Press Menu.
  2. Select Preferences, then Restore Factory Defaults.
  3. Confirm with Yes.

For FocusPro 6000 Models (Various):

  1. Hold both the arrow Up and Fan buttons.
  2. Set the left number to 90 and the right to 1.
  3. Hit Done.

For VisionPRO 8000 Models (Various):

  1. Press System.
  2. Hold the center blank box.
  3. Input 0710 on the left, 1 on the right, then press Done.

For VisionPRO TH8321WF:

  1. Hit Menu.
  2. Scroll to Dealer Information and record the date code.
  3. Enter the date code in Installer Options.
  4. Reset to Defaults and confirm.

How to Reset WiFi on Your Honeywell Thermostat

For T9 and T10 Models:

  1. Press the Menu icon.
  2. Scroll to “WiFi” and select “Change Network”.
  3. Enter the credentials for your new network.

For T5+/T5/T6 and Smart/Lyric Round Models:

  1. Press and hold Menu.
  2. Navigate to “WiFi” through the arrows and select it.

For Smart WiFi 9000 and VisionPRO Models:

  1. Press Menu.
  2. For Smart WiFi 9000, select WiFi Setup.
  3. For VisionPRO, enter the installer setup and change the settings as needed.

How to Perform a Schedule Reset on Your Honeywell Thermostat

For T9 and T10 Models:

  1. Press the Menu icon.
  2. Select “Advanced Setup”.
  3. Choose “Reset” and then “Schedule Reset”.

For T5+/T5/T6 Models:

  1. Press and hold Menu.
  2. Navigate to “Schedule” using the arrow icons and select it.

For Smart/Lyric Round Models:

  1. Press Menu.
  2. Go to Preferences and select Restore Default Schedule.

For Smart WiFi 9000 and VisionPRO Models:

  1. Press Menu.
  2. Select Preferences and then Restore Default Schedule.

Once you’ve hit that reset button, your Honeywell thermostat should be as good as new, forgetting all past grievances. You’ll likely need to give it a quick pep talk, setting the date and time and walking it through your preferred temperature settings.

Troubleshooting Post-Reset Issues with Your Honeywell Thermostat

So, you’ve followed the steps to reset your Honeywell thermostat. Still, there’s a glitch in the matrix—your thermostat isn’t behaving as expected. Before you reach for the phone to call in professional help, let’s walk through some troubleshooting tips that might save you time and money.

When Your Thermostat Won’t Turn On Post-Reset

  1. Check the Power: Ensure your thermostat has power. It sounds simple, but it’s often overlooked. If your model is battery-powered, try replacing the batteries.
  2. Circuit Breaker: Sometimes, the issue might be with the circuit breaker. Flip it repeatedly to ensure power goes to your HVAC system and thermostat.
  3. Wiring Check: A reset could disrupt some settings if the wires are loose. Pop open the thermostat cover and make sure all wire connections are secure.

When the Thermostat Doesn’t Connect to WiFi

  1. Re-enter Credentials: Make sure you’ve entered the correct WiFi password. It’s easy to miss a character or forget that passwords are case-sensitive.
  2. Router Reboot: Try rebooting your router. Sometimes, the issue is with the network and not the thermostat.
  3. Interference: Ensure there’s no interference between your router and the thermostat. Devices like microwaves and cordless phones can disrupt the signal.

When the Schedule Doesn’t Seem to Reset

  1. Manual Check: Go through the settings manually to ensure the reset was fully processed. Sometimes, it’s necessary to run through the schedule reset procedure more than once.
  2. Software Glitch: If your thermostat has a touchscreen, responsiveness can be an issue. A soft reboot by removing it from the wall plate for a minute and then reattaching it may help.

Erratic Behavior or Error Codes

If your Honeywell thermostat is behaving unpredictably or flashing codes:

  • Reference the manual: Look up the codes in the manual—each one tells a story.
  • Hard reboot: Try cutting power to the thermostat for a minute and then restoring it.

No Heat or AC Post-Reset

If your system isn’t kicking on:

  • Check system settings: Ensure the thermostat is set to the correct heat or cool mode.
  • Inspect wiring: Loose or incorrect wiring can lead to function failure.

When you’ve tried all your tricks and the thermostat still won’t cooperate, it’s time to:

  • Contact Honeywell: Their support can offer model-specific advice.
  • Consult a professional: An HVAC technician can diagnose and remedy issues beyond a simple reset.


Resetting your Honeywell thermostat typically clears up any technical issues, but occasionally, a stubborn cloud lingers. By checking the basics, troubleshooting connectivity, and ensuring proper settings, you’ll often find the silver lining. However, remember that even weathered sailors need a lighthouse—don’t hesitate to call for professional help if you’re adrift in thermostat troubles.

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Mas Broto

Have been in the heating and air conditioning (HVAC) industry for over 20 years. He is person that will grow and thrive to learn more about the HVAC industry throughout his career. Mas Broto is also a blogger, who's dedicated to bringing you the best knowledge to get ahead in the game of life.

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