I wonder what the experiences are from others with these Thermostats. I have bought a couple as I didn’t want to go the zwave route but I’m not quite happy with the way the HASS component seems to work.
First of all the connection setup is a bit of a pain as only one device can have a BT connection with the thermostat and the BT stack automatically connects after a restart so you need to disconnect this before starting HASS otherwise it doesn’t find them.
Then I have noticed that the eq3btsmart platform is resetting the thermostat date/time and probably more every time it connects which basically makes the internal programming of the thermostat unusable. I wonder if that is intentional or a bug??
Yes, the component does not really work. It keeps the devices always connected and uses the unnecessary, complicated and buggy bluetooth library bluepy for its very simple tasks. This is known and mentioned in this open bug report. When I find time I will rewrite this component.