Thermostat displays E6 and cannot complete cloud/app registration

Safety: No electrical work is required.

• Verify internet: Confirm other devices on the same Wi‑Fi network have internet access.
• Update app: Install the latest Lux mobile app from the official app store.
• Check time and date: On the thermostat, ensure the time zone and date are set correctly; adjust if necessary.
• Router settings: Disable any strict firewall or parental control rules temporarily. Ensure outbound HTTPS (port 443) is allowed.
• Reattempt pairing: Remove the thermostat from the app account, then re-add it following the Lux pairing instructions exactly.
• Contact Lux support: If E6 persists, there may be a server-side or account issue; provide model, firmware version, and MAC address to Lux support.