# Honeywell T6 Pro Z-Wave Thermostat not working

**URL:** <https://community.homey.app/t/honeywell-t6-pro-z-wave-thermostat-not-working/138723>\
**Category:** Questions & Help\
**Created:** [June 25, 2025, 7:08pm UTC](https://community.homey.app/t/honeywell-t6-pro-z-wave-thermostat-not-working/138723 "2025-06-25T19:08:51Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![smarthomesven](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/smarthomesven/32/79712_2.png) [@smarthomesven](https://community.homey.app/u/smarthomesven)\
**Post date:** [May 20, 2026, 12:02pm UTC](https://community.homey.app/t/honeywell-t6-pro-z-wave-thermostat-not-working/138723/4 "2026-05-20T12:02:05Z")

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> [@Honeywell T6 token issue](https://community.homey.app/t/honeywell-t6-token-issue/155109/3):
>
> Hi all, Honeywell changed their api endpoint from [http://api.honeywell.com/](http://api.honeywell.com/) to [http://api.honeywellhome.com/](http://api.honeywellhome.com/). We updated the address in our backend and this issue should be fixed now. If you still get the “oauth token failed” error, the old address may still be cached. In that case, please reboot your Homey.

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