After searching the internet and forms it looks like there is no way to remove a broken device from Google home. But I'm adding my problem to the list so that maybe engineers can update Google home to allow this. I have a Nest thermostat that broke, it has been removed and a new Nest thermostat put in its place. Both thermostats show up in Google home. The broken thermostat does not allow it to be deleted from Google home nor does it allow to move to a different home. So, it would be nice to know how to do this or be notified when that option is available.
Sorry for the late response, but I wanted to drop in here to help.
I understand that this can be confusing but I definitely wanted to stop by and see how I could help.
Just wanted to double check to see if you were still needing help on this? If so, what troubleshooting steps have you tried?
I look forward to hearing from you.
Sorry for the delay. I tried multiple things that where suggested on the internet, to get the "remove device" prompt to show up but none seem to work. It has been a while since I've tried so I don't remember the specifics that have been suggested. My next step may be to try hooking it back into the system and see if that will allow me to delete it.