I have just installed 7 pices of Z-TRM3 thermostats from HeatIt a couple of weeks ago, using the HeatIt app in Homey. There was some small issues, but it was not that hard to get them all up and running. Just had to reinstall a couple of them before they were working as they should. They worked fine for some time, but about a week ago, at the same time as Homey released the new software version 7.1.1, some of the thermostats stopped reporting values to Homey. It might just be a coincidence.
I have tested changing group 1 from 1.1 to 1 and back to 1.1 as mentioned in another post in the forum, but this did not help. I can also see that I am no longer able to go in to advanced settings to do changes on the termostats as they repond with a fault message that it is not possible. I then desided to try to remove one of the thermostats and connect it again, but there is no way that I can get the thermostat to communicate with Homey. I have done this with all the thermostats a couple of weeks back and did not have this type of problem. I have also restarted Homey several times and I have power off the termostats and back on again.
At the moment it looks like 3 thermostats work fine, 3 are not reporting values and 1 that I have tried to reinstall are not possible to connect any more. Also note that there are the thermostats closest to Homey that has the problem and the one I am tying to reinstall are only located 2 meters from Homey.
I find it a bit suspicious that this happened at the same time as software version 7.1.1 of Homey was released, as this also statets the following in its release note: " [Z-Wave] Update send command options for improved stability".
Have anyone else experienced something like this? Any suggestions to what can be done?