my nest learning thermostat III generation is reporting every now and then the error code N80. It happens every two months more or less since September. Basically it says that there is a connection problem to the heatlink. When it appears I just click on check connection and the message disappears. During normal functioning the thermostat says that it is both connected with wifi and cables to the heatlink.
The strange thing is that there is no N80 troubleshooting on the guide. Am I missing something? Do you have any suggestion?