I’ve just setup multiple Remotec ZXT-600 and for some reason when I input a setting using the thermostat card e.g. temperature 19 and Cool, it accepts it, sets the air conditioner correctly, then 2 seconds later resets the card/state to 0 and Off…
I’ve tried factory resetting the devices multiple times, remove and add to Z-Wave and I looks to be setup correctly.
This was an issue in OpenZWave (The old ZWave integration) ZWave JS does not have this problem.
Everything works properly in Z-Wave JS, which is the official Z Wave integration for Home Assistant now