The thermostat displays E7 and does not respond to app commands.

Safety: No electrical work is required for this fault; do not open the thermostat unless instructed by Stelpro support.

Steps to troubleshoot E7 (cloud communication):

• 1. Check internet connection: Confirm that other devices in the home can access the internet. If not, reboot your modem/router and contact your ISP if needed.
• 2. Verify router settings: Ensure that your router's firewall is not blocking outbound connections for the thermostat. Disable overly aggressive parental controls or firewall rules temporarily to test.
• 3. Check Stelpro app status: Log out and back into the Stelpro app. Look for any service status notifications from Stelpro indicating maintenance or outages.
• 4. Sync time and region: In the thermostat menu (or app), verify that the time zone and date are correct. Incorrect time can cause SSL or token validation failures.
• 5. Firmware update: If local Wi-Fi is working, check for and install any available firmware updates via the app. Follow on-screen instructions and do not cut power during the update.
• 6. Re-link account: Remove the thermostat from your Stelpro account in the app, then perform a factory reset on the thermostat (see manual) and add it again as a new device.
• 7. Contact Stelpro support: If E7 persists, provide them with the thermostat model, firmware version, and your network details. They may need to reset your cloud device registration.

Note: The thermostat should still control temperature locally even with E7, but remote access will be limited.