10 Troubleshooting SMA Solar Technology AG
60 SI80H-BE-BEN120810 Operating Manual
How do I start the QCG?
• See the installation manual of the off-grid inverter for information on starting the QCG.
Why is "MCC operation failed" shown in the display?
An action with the SD card has failed.
• Ensure that the write protection on the right side of the SD card is deactivated.
• Use a computer to ensure that the SD card is free of errors.
• If you are a skilled person, ensure that the data cable between the Sunny Remote Control
and the off-grid inverter is undamaged and that the plugs are firmly inserted into the sockets.
Why is Incomp shown in the display?
The SD card is not formatted with the FAT-16 file system.
10.5.3 Questions on the External Energy Source
The off-grid inverter does not connect to the running generator?
A high output power of the off-grid inverter when the battery state of charge is low can prevent
the off-grid inverter raising the AC voltage in the stand-alone grid to the AC voltage of the
generator. The off-grid inverter cancels synchronisation.
• To charge the battery, reduce the power of the loads.
The generator voltage might not be within the limiting values for voltage and frequency.
• Check whether the icon " " is displayed permanently in standard mode.
If the " " icon is not displayed, ensure that the fuse is not defective or the miniature circuit-
breaker is activated.
If the " " icon is not displayed permanently, the generator voltage is sporadically outside
the limiting values.
• If you are a skilled person, set the limiting values for voltage and frequency of the
generator voltage (see the installation manual of the off-grid inverter).
If the " " icon is displayed permanently, the off-grid inverter is in the warm-up period or is
blocked for connection. Hint: Check whether the Sunny Remote Control displays the " "
warning icon in standard mode.
Is a GenMan used in the system?
• If you are a skilled person, check the feedback signal at the DigIn connection.
• Ensure that the generator is started manually via the GenMan only.
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