I’ve reached the same point. I also have 2 thermostats listed on the receiver, one with the correct temp and details and the other which doesn’t seem to do anything, and 2 HVA actions, similar to the stats listed.
However, you seem to have got slightly further than me in terms of the thermostat unit. My SLT6 lists the correct temperature on the sensor, but the controls don’t display any relevant data.
These screenshots were taken at basically the same time.
Changing the temp on the stat, or using the controls on the reciever in HA does appear to do what it is meant to do, but something is not quire right here.
I’m loathed to move all 50 Zigbee devices from ZHA to Z2M, but if it’s the only option to get this working I probably will.
At the moment I have the receiver wired to a plug and not on the boiler for testing, so I’m not impacting the wife and kids, but it would be nice to have this working properly ASAP.
When first paired the receiver seemed to be performing as expected, and I had it set to heat for over an hour. I then had a play with the Climate controls in HA and turned it from “heat” mode to “off”. When I tried to turn it back to heat mode in HA, the set temp dropped to 1C and after changing it, neither the receiver or the thermostat reflected the change. I used the thermostat to turn the heating back on and that worked, but ever since, it seems to get stuck in a cycle where the receiver turns the boiler on for 9-10mins then it loses connection to the thermostat, the light on the receiver turns red (and reports idle in HA), the boiler turns off, and then 5/6mins later it reconnects and the receiver turns the boiler back on. It’s done that consistently over night and a power down and reboot of both units seems to make no difference. During the period when the receiver is showing a red light, if I change the temp on the thermostat it is reflected in HA, but it still reports being disconnected on the screen.
Update (14 Nov 2024):
In the end I’ve moved over to Z2M and everything is working as expected. It’s a shame I couldn’t get it working reliably with ZHA, but I’m happy now. It’s been stable for 6 days and with none of the issues I was seeing in ZHA.
With time it may have been possible to work out what was going on and fix it, but I didn’t have the time or inclination. Having now played with the Z2M integration, I think ZHA isn’t sending the necessary complete commands because multiple attributes are changed at the same time, and I suspect ZHA isn’t sending all the necessary updates.
I’m not entirely sure it was a bit of trial and error. I’d aim the handle join at the device connected to your boiler, when it’s in the appropriate light flashing stare as described above.
Then I’d put the battery powered controller into pairing mode as described above
