(ch) An action with the SD memory card has failed.
• Use a computer to ensure that the SD memory card is free of errors.
• Ensure that the data cable between the Sunny Remote Control and the Sunny Island is undamaged and that the plugs are firmly inserted into the pin connectors.
All work on the inverter and the cabling of the PV array must be carried out by an electrically qualified person. SMA accepts no liability for the information and solutions given in the Online Service Center. Additional information can be found in our Online Service Center’s terms and conditions of use.