Picture of the Honeywell RTH9580WF Smart WiFi Thermostat, Menu, System Setup button highlighted.

Honeywell RTH9580WF WiFi Setup Instructions

This post gives Honeywell RTH9580WF WiFi setup instructions for this touchscreen full color smart thermostat.  Use this routine to get your thermostat up and running for the first time in your home, or when you need to set it up again to a different WiFi network.





Perhaps you have changed the name of your home WiFi network. Or perhaps you changed your WiFi network router and didn’t set your new router’s network settings exactly the same as were the ones on the old router set. Or, you may want to set up the t-stat to a new access point in your home. For all of these cases, you can setup the thermostat to WiFi by following the instructions below.

Picture of the Honeywell RTH9580WF smart t-stat, front view after initial setup.
Honeywell RTH9580WF smart t-stat, front view, after initial setup.

Honeywell RTH9580WF WiFi Setup Instructions

For sure, Honeywell really improved the WiFi setup routine for this smart t-stat. Indeed, you no longer must set it up via a tablet or phone to change the network settings. Instead, you can now set up the entire WiFi profile via the RTH9580WF touchscreen menus. Here’s how.

1. Enter WiFi Setup mode

First, switch from normal to WiFi setup as follows. Press the   Menu  button at the top right of the   Home   screen, as shown above.

Then, scroll with the arrow keys at right, through the main menu. Stop scrolling when you see the   Wi-Fi Setup   button, as shown next.

Picture of the t-stat menu, with the WiFi Setup button circled.
The t-stat’s menu page, showing the WiFi Setup button circled.

Next, press the   Wi-Fi Setup   button, circled in red in the above pic.

The   Wi-Fi Setup   screen then displays, as shown next.

Note that we have blanked the t-stat MAC address and CRC values, to preserve its anonymity. Also note that normally, this screen shows the status of the connected WiFi network. But here, the OurHouse1 network is not in range (no signal). So we’re going to discard the OurHouse1 info.  Then we will replace it with an in-range WiFi network in the following steps.

Screenshot of the -WiFi Setup- screen on the t-stat.
The WiFi Setup screen on the t-stat.

2. Disconnect the T-stat from its Current WiFi Network

Skip this step and move to step 3 if you thermostat is not currently connected to a WiFi network. It is probably not if this is first time setup.

Then press the   Disconnect from Network   button.

The   WiFi Network Disconnect Confirmation   screen appears, as follows.

Picture of the -WiFi Network Disconnect Confirmation- prompt screen.
The -WiFi Network Disconnect Confirmation- prompt screen.

Press the green   Yes   button. After a pause, the system lets you know that it disconnected from the old WiFi network, as shown next.

Screenshot of the -Network Disconnected- page.
The -Network Disconnected- screen.

Then, press the green   OK   button in the lower right corner of the screen. After the press, this takes you back to the main menu, as shown next.





3. Find the WiFi Setup Button to Continue with Honeywell RTH9580WF WiFi Setup

From there then, use the UP and DOWN arrow keys to scroll through the menu to the   Wi-Fi Setup   button.

Picture of the t-stat main menu, with the -WiFi Setup- button circled.
Showing the t-stat main menu, with the -WiFi Setup- button circled.

4. Tap the   Wi-Fi Setup   Button

Then, press the red-circled   Wi-Fi Setup   button.

When no network information resides in the t-stat, pressing   Wi-Fi Setup   starts a scan for in-range WiFi networks.

Then, a brief message displays, showing  that the network scan is in progress.

Next, the RTH9580WF lists the in-range WiFi networks it found, on its   Select Wi-Fi Network   screen, as follows:

Showing the -Select WiFi Network- screen on the t-stat.
The -Select WiFi Network- screen on the t-stat.

5. Find your Desired WiFi Network

Then, tap the network in the list to which you wish to connect the smart t-stat. So in our case, we’re connecting to the  937T681J4059H_2G  wireless network.

The   WiFi Password Entry    screen then appears, as follows.

Picture of the -WiFi Network Password Entry- page.
The -WiFi Network Password Entry- screen.

6. Enter WiFi Password if Asked For to Continue with Honeywell RTH9580WF WiFi Setup

Next, use the displayed virtual keyboard to enter your password. To enter numbers and punctuation characters, press the ?123 key. Why? Because this switches the keyboard to number entry mode.

The password characters appear as you type them. So do this when no non-trusted folks are looking.





7. Connect to the WiFi Network you Picked

When you’ve finished entering the password characters, press the green    Done    button.

This WiFi t-stat then tries to connect to the chosen WiFi network. While reconnecting, it displays the following screen.

Picture of the -Connecting to WiFi Network- screen.
The -Connecting To WiFi Network- screen.

Then, if no errors happen, the system reconnects to the selected WiFi network.

Next, it shows the following screen. Here, it displays the name of the wireless network that the t-stat now connects with.

Screenshot of the -WiFi Connection Successful- page.
Showing the -WiFi Connection Successful- screen.

8. Register your Honeywell Thermostat Online for Remote Access

Next, press the green OK button.

Then, the   Register Online for Remote Access   screen then appears, as shown next.

Now perhaps you already registered your WiFi t-stat. If so, then you need not register it again, so long as you have not unregistered it. Note that setting up to a new WiFi network does not unregister the t-stat.

Picture of the t-stat, showing the -Register Online for Remote Access- screen.
The t-stat displaying the -Register Online for Remote Access- screen.

Then, press the green Done button.

The system then returns to the   Wi-Fi Setup  screen. But this time, the connected network info appears, as shown in the next shot.

Picture of the Honeywell RTH9580WF smart thermostat, Displaying the WiFi Setup Screen with the network connected successfully.
Honeywell RTH9580WF smart thermostat, Displaying the WiFi Setup Screen with the network connected successfully.

Next, press the green Done button. Then, the t-stat takes you back to the main menu, as shown below.

Picture of the t-stat main menu, with the -WiFi Setup- button circled.
The t-stat showing its main menu, with the -WiFi Setup- button circled.

Then from there, press the Home button at the top left corner of the Main Menu screen, to return to the    Home   screen, as shown next.

Picture of the Honeywell RTH9580WF smart t-stat, front view after initial setup.
Honeywell RTH9580WF smart t-stat, front view after initial setup.

9. Honeywell WiFi Thermostat Setup Done!

Finally, your Honeywell smart thermostat is now set up to your new WiFi network. You’ll see that when the outdoor temperature and humidity settings update soon after.





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References for Honeywell RTH9580WF WiFi Setup Instructions

  1. Where to buy the Honeywell RTH9580WF Smart Thermostat
  2. RTH9580WF Wireless Thermostat Product Page

Revision Log

  • 2019-04-10: First posted.
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