HomeKit question: my smart thermostat lost its Wi-Fi connection. When I try to add it back after deleting it from Home, I'm told it's still IN Home. Thoughts? I have rebooted my Apple TV. Some other HomeKit devices also seem lost while others are working. Is there a way to reset the HomeKit hub other than restarting the Apple TV that would clear the state problem?
May have figured it out. The thermostat can connect only over 2.4 GHz to Wi-Fi. When you configure it via an iPhone app, there's a note that says to connect the iPhone only to 2.4 GHz…I have all my networks named identically, so that won't work. So I've created a 2.4 GHz guest network to test this theory.
Thank you for everyone's help! I guess a router rebooted and the thermostat lost its 2.4 GHz connection. When I tried to reconfigure it, my iPhone was connected over 5 GHz (I have all my 2.4 GHz and 5 GHz networks named the same for roaming).
So even though it should pass the network name and password, I'm wondering if HomeKit passes the BSSID?! If so, that would explain it.
Solution was:
• guest 2.4 GHz unique name
• enable guest access to rest of network (for mDNS discovery for HomeKit)
@glennf when I have similar problems, I change the name of the 5GHz network temporarily, that way everyone can still use the 2.4. Once the device is connecting again. I move the 5GHz name back to match. Then wait a year or so for something to fail.
@glennf Is the Apple TV is the only HomeKit hub in your house? I once faced a similar issue and unplugged the Apple TV and three HomePods so that all hubs were offline, and then plugged them in one at a time.
@glennf is it an Ecobee? If so, you have to go into the settings on the device and remove it from your home before you can add it (even if removed from capital-H-Home)
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