Why the red wifi Led on board to the Classe 300EOS with Netatmo is blinking? | Legrand Belgique

If the wifi LED on your Classe 300EOS with Netatmo is flashing it means that there are problems connecting to the WiFi: WiFi on the Classe 300EOS with Netatmo is enabled but is not connected to your WiFi network

Check that your modem is powered.

Someone have changed an access password on your home WiFi network?

See FAQ: How can I re-set the WiFi network on my 100x Class?