Thermostat shows F08 and cannot connect to the home Wi-Fi network; app control is unavailable.

Safety first: This is a low-voltage, low-risk task.

• Check Wi-Fi network:
  • Ensure your router is broadcasting a 2.4 GHz network (most Ferroli smart thermostats do not support 5 GHz only).
  • Confirm internet access from another device.
• Re-enter credentials:
  • On the thermostat or in the Ferroli app, forget the current network.
  • Reconnect by carefully entering the correct SSID and password (case-sensitive).
• Improve signal strength:
  • Move the router closer to the thermostat or install a Wi-Fi extender.
  • Avoid placing the thermostat behind metal panels or in cupboards.
• Restart devices:
  • Reboot the router and the thermostat.
• If F08 remains:
  • The Wi-Fi module may be defective.
  • Contact Ferroli support; the Wi-Fi smart thermostat may need replacement.