Picture of the Honeywell RTH9580WF Wi-Fi thermostat, displaying its -Wi-Fi Setup- screen, with the thermostat's MAC address and CRC number covered.

How to Find Honeywell RTH9580WF Thermostat IP Address, MAC ID, and MAC CRC Values




Why would you need to know how to find Honeywell RTH9580WF thermostat IP address?  You would check for a valid IP address on the thermostat to make sure that the t-stat is linked to your WiFi network rightly.  Knowing that your t-stat is working with a valid IP address is a valuable aid.  It helps in troubleshooting internet problems between your smart t-stat and the Honeywell Total Comfort Connect website.  With no IP address on your t-stat, you won’t be able to control it outside your home via your phone, tablet, or any other device for that matter.




Further, You can find the t-stat’s MAC ID and MAC CRC values as well, using this same method.   How so?  These are also listed on the same screen as the IP address.  And, you get to that screen the same way, whether searching for IP address, MAC, or CRC values.  You need the MAC CRC and MAC ID numbers when registering your remote controlled thermostat on the Honeywell Total Comfort Connect website.  Again, you cannot set your thermostat remotely if not registered.

How to Find Honeywell RTH9580WF Thermostat IP Address, MAC ID, and MAC CRC Values

1. Go to the Thermostat’s Home screen

These thermostat sit at the Home screen by default, and will return there from any other screen after several minutes.

The Home screen we see on our Honeywell RTH9580WF looks as follows.

How to find Honeywell RTH9580WF thermostat IP address, MAC ID, and MAC CRC values. Picture of the Honeywell RTH9580WF WiFi thermostat, showing its -Home- screen, with the -Menu-button highlighted.
How to find Honeywell RTH9580WF thermostat IP address, MAC ID, and MAC CRC values. Honeywell RTH9580WF WiFi thermostat, showing its -Home- screen, with the -Menu-button highlighted.

2. Tap the Menu Item

Tapping the menu option brings up the main menu screen, similar to what’s pictured next.

How to find Honeywell RTH9580WF thermostat IP address, MAC ID, and MAC CRC values. Picture of the Honeywell RTH9580WF WiFi Smart Thermostat menu, with the WiFi Setup button circled.
How to find Honeywell RTH9580WF thermostat IP address, MAC ID, and MAC CRC values. Honeywell RTH9580WF WiFi Smart Thermostat Menu, WiFi Setup button circled.




3. Tap the Wi-Fi Setup Menu Item

You may have to use the scroll arrow keys (right side of the screen) to move down to the Wi-Fi Setup option.

We found ours though, and tapped it.  This brought up the following screen.

How to find Honeywell RTH9580WF thermostat IP address, MAC ID, and MAC CRC values. Picture of the Honeywell RTH9580WF Wi-Fi thermostat, displaying its -Wi-Fi Setup- screen, with the thermostat's MAC address and CRC number covered.
How to find Honeywell RTH9580WF thermostat IP address, MAC ID, and MAC CRC values. Honeywell RTH9580WF Wi-Fi thermostat, displaying its -Wi-Fi Setup- screen, with the thermostat’s MAC address and CRC number covered.

In this example, looking at the Wi-Fi Setup screen above, we see that our thermostat IP address is 192.168.0.15.  This screen also displays the Thermostat MAC and Thermostat CRC values.  Note that these are unique to each thermostat.  So when registering, you should only use the numbers found on the thermostat that you’re setting up.

4. Done!

WE have now demonstrated how to find Honeywell RTH9580WF thermostat IP address, MAC ID, and MAC CRC values.  We hope this routine helps you debug any problems with your RTH9580WF smart WiFi thermostat.

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References

Revision History

  • 2018-06-09: First published.