Hi @tserwicki ,
Is this your TRV ?
If you can keep it for one more week, I will try to add it to the new Zigbee TRV and Thermostats driver..
Can you try the following:
Turn on the 'Advanced Options' and lock on the Save Preferences button.
Additional preferences will appear on the device page - select "MOES BRT-100 TRV" and save the preferences again.
Your TRV is different than the Moes BRT-100, but some commands are the same - let me know if something is working or not.