Honeywell RTH9580WF Waiting for Update

Honeywell RTH9580WF thermostat, showing its -Waiting for Update- message immediately aFter power up.

The Honeywell Waiting for Update message can show up on Honeywell smart t-stats, like the RTH9580WF in this example. These messages, though not always errors, can show up when the t-stat has just come online after installing it, or a power outage. These can also occur if the Wi-Fi network to which the t-stat connects, loses internet access.

Honeywell RTH9580WF Waiting for Update: What it Means

Waiting for Update… simply means that the RTH9580WF t-stat has not yet received outdoor temp and humidity data from the internet. It either has not received the update since the last power-up, or when it expected to receive it. The t-stat normally gets outdoor readings updates a few times per hour at least. But you may see these messages if an update has not come in on time.

Honeywell RTH9580WF Waiting for Update: How to Clear / Fix

Honeywell provides no way to clear the Waiting for Update… message manually. Rebooting the t-stat does not clear it either.

Now when the t-stat has good internet access, this message normally goes away on its own within a few minutes. We waited under two minutes on our RTH9580WF t-stat for the Waiting for Update message to clear. It then showed the outdoor temp and humidity as seen in the next screenshot, pointed at by the green arrow.

Honeywell Waiting for Update RTH9580WF thermostat message. Honeywell RTH9580WF thermostat, showing outdoor temperature and humidity, the -Waiting for Update- message gone.

Next, note that the Waiting for Update message does not interfere with normal t-stat operation. That is, the t-stat will still accurately control the indoor temp in spite of this message. But if the message occurs because your t-stat has lost internet access, this could mean that you will not be able to control the t-stat remotely, until you resolve any internet problems.

To fix lost internet connectivity, check your other devices for proper operation. Try rebooting your router and / or WiFi access points. Check that any firewalls in your network that feed the t-stat aren’t blocking the wrong ports.

Lastly, your internet could be fine. But the Honeywell servers that support this t-stat could be down. Again, this sort of outage you can do little about. except to let Honeywell know of the problem. Then, all you can do is wait for them to resolve.