CONVOTHERM MAXX PRO > Software error messages > E40...
E40.99.1.0 - ConvoSense communication error
E40.99.2.0 - Cloud server communication error
E40.99.3.0 - Cloud server communication error
E40.99.4.0 - Cloud server communication error
E40.99.5.0 - Cloud service provider communication error
E40.99.6.0 - WiFi connection lost