10 Troubleshooting SMA America, LLC
74 SB30-40-US-IA-en-33 Installation Manual
10.4.2 Error Messages
In the event of an error, the corresponding messages are shown in the display and the backlight is
activated. Each error message is displayed for 5 seconds. After 5 seconds, the display switches
through the regular operating messages. The error message will be displayed in the display sequence
until the fault is rectified.
If the feed-in to the power distribution grid is interrupted either manually or due to a detected AC
failure and then resumed, the inverter waits 5 minutes before resuming grid feed-in. For this purpose,
the DC input voltage must be greater than the DC start voltage of the inverter (see Section
12 "Technical Data", page 90). If the feed-in conditions are not met 3 times in a row, the inverters
waits 10 minutes and then attempts once more to feed into the power distribution grid.
Message Cause and corrective measures
Bfr-Srr Communication between micro-controllers is interrupted.
Corrective measures:
• Contact the SMA Service Line (see Section 15).
Derating The inverter reduces its output power due to excess temperature.
Corrective measures:
• Clean the fan (see Section 11.2).
Error AFCI The inverter has detected an electric arc in the PV system.
Corrective measures:
• Eliminate the disturbance (see Section 10.4.3 "Resetting "Error
AFCI" Disturbance", page 77).
EarthCurMax-B,
EarthCurMax-S
The ground-fault monitoring (GFDI) has detected an excessive residual
current in the PV plant.
Corrective measures:
• Check the PV plant for ground-faults (see Section 11.6).
EEPROM Temporary disturbance whilst reading or writing data from the EEPROM.
This data is not essential for safe operation. This message only serves to
inform you and has no effect on the performance of the inverter.
EEPROM p Data from the EEPROM are defective.
The inverter has switched off, because the loss of data has disabled
important inverter functions.
Corrective measures:
• Contact the SMA Service Line (see Section 15).
EeRestore One of the duplicate records in the EEPROM is defective and has been
reconstructed without loss of data. This message only serves to inform you
and has no effect on the performance of the inverter.
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