How do I connect / reconnect my TH6320WF / RTH6580WF thermostat to the Wi-Fi network?

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If you’re getting a Connection Failure message on your FocusPRO (TH6320WF, RTH6580WF, or TH6210WF) thermostat, it probably lost internet connection. Please follow the steps below to remedy the issue.


*If your thermostat has lost wi-fi connection, you will be required to be on-location with the thermostat to reconnect it manually. For some users, a reconnection may be possible by remotely re-starting your wi-fi router. Check with your internet service provider for possible options.*

To reconnect your device to Wi-Fi:

  1. Make sure your router is online.
  2. Go to your thermostat on the wall and remove it from its base.
  3. Wait for 1 minute.
  4. Add the thermostat back to its base on the wall.

If that doesn’t work, try the steps below:

Resetting Thermostat’s Wi-Fi Settings

  1. Press and hold the Fan Button and Up Arrow for about 5 seconds to change the screen.
  2. Press Back Button or Next Button until 39 appears on the left.
  3. Press the Up or Down Arrows to change the number on the right to 0.
  4. Press Done Button.

Reconnecting Thermostat to Wi-Fi

  1. Make sure Wi-Fi Setup is displayed at the top of the screen.
  2. On a mobile device, view the list of available Wi-Fi networks.
  3. Connect to NewThermsotat_[series of numbers/letters]. *This is a wifi connection between your phone and your thermostat – it is normal to receive a message that states "this connection has no access to the internet" – please dismiss the alert and continue. Do not allow the phone to change to another wi-fi connection until you have completed step 10.* If you do not see the "NewThermsotat_[series of numbers/letters]" network, remove the thermostat faceplate from the wall for 30 seconds and then reattach it and reattempt.
  4. Wait for your browser to automatically open a setup screen. If this doesn’t happen, go open a new browser and go to the web address
  5. Find the name of your home network and press Red Button below it.
  6. Enter your home network’s password and press Connect.

If you’re still having issues, please call Honeywell Customer Care at 1-800-633-3991.


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