UPDATE: The default homekit component now works fine with the T5/T6
Active/support thread about the specifically lyric T5/T6:
I am also trying to get the Lyric T6 working.
I do get a card in the frontend, but this is on 0.74.0 which had some Homekit fixes, so maybe that was key to getting the card.
However the card is only showing “Unknown” instead of the temperature.
I have been playing with the HomeKit component that is used by Home Assistant (https://github.com/jlusiardi/homekit_python) and with the commands from the readme I am able to get all the info from the Lyric.
1.1: >accessory-information<
1.2: () >identify< [pw]
1.3: Honeywell () >manufacturer< [pr]
1.4: YT4710WF1003 () >model< [pr]
1.5: Lyric-036BFF () >name< [pr]
1.6: 200218B32CA0636B7F () >serial-number< [pr]
1.7: 2.6.7 () >firmware.revision< [pr]
1.8: 0 () >accessory-properties< [pr,ev]
1.9: >thermostat<
1.10: 0 () >heating-cooling.current< [pr,ev]
1.11: 1 () >heating-cooling.target< [pr,pw,ev]
1.12: 26.5 () >temperature.current< [pr,ev]
1.13: 21 () >temperature.target< [pr,pw,ev]
1.14: 0 () >temperature.units< [pr,pw,ev]
1.15: Lyric T6 Thermostat () >name< [pr]
So it seems to be something in HA. My guess is that it is related to the fact that in the HA logging it shows “supported_features”: 0, so maybe HA thinks the device does not support Temperature? Or maybe HA is just not polling the device?
Getting more logging or another way to debug would be nice.
Just upgraded, and have the exact same situation as you’re mentioning.
I’ll take a deeper look when I’ve got some time.
Possibly we can report this as an issue in github?
I have been unsuccessful at getting my two T6 Pro(s) to connect to my hass.io setup. Updated and saw the new Climate card saying “unknown” and without much info.
I might end up just adding the thermostats to the Home App and try and integrate them into HA from there.
Initially I was trying to primarily use the Home App and integrate third party devices with HA, but have shifted more towards using HA and then just voice control with Siri. It’s been a long battle lol.
Off topic:
I had gone down the other path: (which is quite unreliable/difficult)
On topic:
Had a little time to test, got some more info, HA is actually detecting it as a thermostat! On first look it seems like the accessory info is getting lost or badly imported.
2018-07-22 13:08:03 DEBUG (Thread-19) [homeassistant.components.homekit_controller] Discovered unique device 02:FC:16:6D:96:FC
2018-07-22 13:08:03 INFO (Thread-19) [homeassistant.components.homekit_controller] Setting up Homekit device YT4710WF1003
2018-07-22 13:08:04 DEBUG (Thread-19) [homeassistant.components.homekit_controller] Found accessory-information
2018-07-22 13:08:04 DEBUG (Thread-19) [homeassistant.components.homekit_controller] Found thermostat
2018-07-22 13:08:04 INFO (MainThread) [homeassistant.components.climate] Setting up climate.homekit_controller
Using the homekit_python script I was able to get/set target temperatures etc with the commands:
python3 -m homekit.put_characteristic -f "hk-02:FC:16:6D:96:FC" -c 1.13 15
(ha) ha@ntpc:~/homeassistant/.homekit$ python3 -m homekit.get_characteristic -f “hk-02:FC:16:6D:96:FC” -c 1.12
{
“characteristics”: [
{
“aid”: 1,
“iid”: 12,
“value”: 25
}
]
}
Follow if you want to help or post more info if you have it 
https://github.com/home-assistant/home-assistant/issues/15622
Update: with some changes to climate/homekit_controller.py tthe T6 is functional!
Check the posted github for more info.
Working in custom_components:
If your Lyric can cool change:
self._valid_modes = [ STATE_OFF, STATE_HEAT ]
to
self._valid_modes = [ STATE_OFF, STATE_HEAT, STATE_COOL ]
I’ve tried a number of configs to get this going as a custom_component with no luck. The controller/component docs aren’t helping.
Any pointers?
Thanks
the quick guide :
- enable homekit discovery in configuration.yaml:
discovery:
enable:
- homekit
-
copy the above script to ‘yourhomassistantcongifdir’/custom_components/climate/homekit_controller.py
-
restart HA, after a bit you should get a configuration prompt in the front end
If you don’t find the pairing code, just type any code, enter and the thermostat should then show the correct code
If you still have issues, reset homekit on the thermostat, maybe try to debug like in the first posts
4 Likes
That did it. Thanks!
I got this set up and added a lovelace entity card. Everything appears to report properly until I make a change through the card.
The card never updates with the temp I set. The actual lyric does change to the new temp but also sets to "away’. Here, I’ve set the temp via the card to 74, but hass.io doesn’t get it.
Just wanted to edit my original post and say that I was able to add my two T6 thermostats via Homekit_Controller. I realized I was missing the “custom_components” directory, so I just made the folders and then made a homekit_controller.py file in Atom (I use macOS).
I restarted HASS.io and the Climate card was updated. I noticed only “off” and “heat” were there, but customized the entity and added “cool.” This fixed it nicely!
Glad to see the progression! The only thing stopping from using the HA app full time (instead of Home app) is that I couldn’t get the HomeKit key to work for (1) eight Leviton HomeKit switches and (2) two Honeywell T6 thermostats.
With these climate and switches/lights working, I can use HA full time (which I wanted specifically due to better radius control of my zones.
@gohassgo I don’t use lovelace. It could have to do with the fact that your t6 can run HVAC and not just heat as i can see on your attributes.
You should change
self._valid_modes = [ STATE_OFF, STATE_HEAT ]
to
self._valid_modes = [ STATE_OFF, STATE_HEAT, STATE_COOL ]
as @danthaman152000 found out appareantly 
@danTHAman152000 The reason its not activated by default, is that in EU the cool component throws an error b/c EU version can’t cool…
I’ll edit the modded script post to reflect that, ty for pointing that out
Any tips on getting these thermostats to reappear into the Home app? I have my alarm and also garage door showing up in the Home app still, but the thermostats have been gone since I reset them and added them to HA.
When I go to add an accessory in the Home app, nothing appears. I have also tried disabling the Homekit component, which did not help. Any ideas? I would like to retain the functionality of the Home app integration into iOS.
Home kit devices can only be coupled with 1 device… But you can add them through hass with homebridge component i believe
Thanks for that… I added “cool” to the entity in Configuration > Customization > operation_list.
["off","cool","heat"]
The cool mode does appear in the card, but temperatures are not updating and always shows 76. However, the history graph does show temp changes and it looks correct.
Any idea why the temps aren’t updating as they should?
Thanks
Let me say thanks again for all the help and effort.
I do use Homebridge for security cameras to show up in Home app. I am not sure if I would need a generic climate plugin or a specific Honeywell to get it to show up.
Homekit component works fine for my garage (cover) and alarm (alarm_control_panel), and should also work for climate. However it simply does not appear when I add it in the Home app.
Hopefully someone can chime in if they figure out how to do it.
Same issue as @gohassgo, is like they stopped reporting updates to Home Assistant or Home Assistant stopped polling them (I have 2 T5s).
After a restart my two T5 disappeared. They are no longer being detected by Home Assistant. Any idea?
In the first post is described how to debug log. Post those logs pls, after you had these issues