Nest thermostat shows N2 and cannot find or join the selected Wi‑Fi network

Note: No need to power down HVAC for this network troubleshooting.

• Verify password: Re‑enter the Wi‑Fi password carefully on the Nest. Confirm it works on another device.
• Check band and mode: Ensure your router has 2.4 GHz enabled and is using WPA2 or WPA3‑Personal security (not enterprise or WEP).
• Reduce distance/interference: Move the router closer to the thermostat or add a mesh node. Avoid placing the router behind metal objects or near microwaves.
• Network name (SSID): Avoid special characters in the SSID that some devices may not handle well. Test with a simple SSID if needed.
• Restart devices: Reboot the router and the Nest thermostat, then attempt to join the network again.