SMA 10000TL - 11.8 Electronic Solar Switch; 11.9 Data Storage Capacity

Troubleshooting SMA Solar Technology AG
68 SMC9-11TLRP-IEN100640 Installation Guide
Check L-N-PE L and N are swapped at the AC connection or PE is not connected.
Corrective measures
• Check the AC connection
Check Varistor At least one of the varistors is defective.
Corrective measures
• Check the function of the varistors as described in section
9.4.1”Checking the Function of the Varistors (<Check Varistor>)”
(page75).
DC fuse At least one string fuse is defective.
Corrective measures
• Check and if necessary replace the string fuses, as described in
section 9.4.2”Replacing the String Fuses (<DC fuse>)” (page78).
Derating The "Derating" operating mode is a normal operating mode which may
occur occasionally and can have several causes.
Once the inverter enters the "Derating" mode, it will display the "Derating"
warning until the next total shutdown of the device (at the end of the day).
Corrective measures
• Check heat dissipation, as described in Section 8.1”Checking
Heat Dissipation” (page61).
dI-Bfr
dI-Srr
The inverter has detected a drastic change in the differential current. The
integrated differential current monitoring system plays an important part
in ensuring personal safety.
A drastic change in the differential current can be caused by a sudden
grounding fault, failure current or an actual fault in the device. The
inverter disconnects from the grid.
Corrective measures
• If the message "Fault current-Bfr" or "Fault current-Srr" appears for
no obvious reason, verify whether the plant insulation might have a
ground fault, as described in section 9.3”The Red LED Glows
Continuously (Ground Fault)” (page74).
EEPROM Transition disturbance during reading or writing of EEPROM data. The
data is not relevant for safe operation.
• The disturbance has no effect on the performance of the inverter.
EEPROM dBh EEPROM data is defective, the inverter has switched itself off because the
loss of data has disabled important functions of the inverter.
Corrective measures
• Contact the SMA Serviceline.
Message Description and corrective measure