Thermostat shows E10 and cannot connect to Wi‑Fi or the Drayton Wiser HubR.

Safety first: Network troubleshooting does not usually require power isolation, but do not open mains-powered hubs without isolating power.

• Check router and SSID: Ensure the Wi‑Fi network is 2.4 GHz, broadcasting SSID, and that the password is correct. Wiser does not support some 5 GHz-only setups.
• Reduce interference: Move the Wiser HubR away from metal objects, thick walls, and other RF devices. Ensure the thermostat is within range.
• Reboot and reset: Power-cycle the Wiser HubR and thermostat. If E10 persists, perform a network reset via the app or device buttons and re-add the thermostat.
• Firmware update: Use the Wiser app to check for firmware updates for the HubR and thermostats.
• Replace if hardware fault: If no device can connect and E10 remains after resets and updates, the Wi‑Fi module may be defective. Replace the Wiser HubR or affected thermostat.