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.