My Honeywell Lyric T5’s WiFi thermostats worked well connected to ST for years but lately they have not responded (ST showed changes but those changes didn’t get pushed to T5’s). The T5’s work perfectly in the Resideo App I went down a rabbit hole trying to fix them. I removed the devices from ST…

Woke up to a surprise today and the integration is back to normal. I can see the linked service in the iOS application again. It does look like Resideo had maintenance on June 27th, which was about the time this nonsense started. [D20F9115-760D-40C6-B0E8-23798494CA25_1_102_o]

ST support got it back so that “linked services” showed up again in the ST-app … and I was able to redo the link to HH. However … a note about ST support. Last night they elevated the case and said they would get back to me (this is all via txt). This morning at 6:54am eastern USA … they text me …

Not sure if it helps any but my D6 pro or D9 pro recently went off line (past week) and I added the integration a few times with zero of my lyric devices showing each time. Last time i just logged in and forgot about it and 4 days later the devices finally show up on my SmartThings app

Also, you might try adding it as a different type of thermostat. I’ve had to do that also with my Lyric D6 pro.

Seems to be working now … once ST did something to allow the link to HH to show up in ST-app (so i could delete and reconnect).

Showing same problem again with the linked service missing from the ST iOS app and unable to control the T6 via SmartThings. The HomeKit integration continues to be solid.

Mine ia still in this linked but no device/communication state. Has happened 3 times in the last year, and always seems to be related to honeywell/Resideo side changes. Moving in a couple months and house has ecobee, so excited to bounce from these guys.

Yea, I just replaced both of my WiFi T6’s with the Z-wave used version sold here for $63. So much better.

Angelo, did you get your devices back in ST after they fixed the HH linked service? I have t9 thermostats and can delete and reinstall the HH linked service, but when i go to add the thermostats I get an network error not allowing me to add them.

Yes … ST Support sent me an email with a 1hr response time at 6am asking me if I still had an issue. I didn’t respond in time … so they closed the incident. When I checked, I was able to delete the connections finally. So I did that, deleted the devices … and started from scratch. It’s working now …

Can't reconnect Honeywell Lyric T5 thermostats through Honeywell Home

Devices & Integrations

Paul_Oliver (PCO) August 17, 2024, 9:24pm 26

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Can't reconnect Honeywell Lyric T5 thermostats through Honeywell Home

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