Figured it out. I had to send HVAC_FLOW_STATE to HA, in order for it to figure out that it was a "thermostat". Only problem is that it shows up with states "Auto" "Cool" "Heat" and "Off" in the dashboard, even though I only have the possibility to heat, or turn it off.
Hey @OldSurferDude
I think we have a missunderstanding here. I have my gateways running on ESP32. When I add the integration I can enter the IP in this dialog:
If you want to change the IP number of the gateway (or the MQTT topic or the serial port), there is no way to do this:
What I did not try but might work: copy your persistence file, delete the old GW and create a new one with the persistence file you copied. Maybe the devices are preserved like this. Maybe you should create a full backup before...
<edit: typo>
