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11 Troubleshooting
SMA Solar Technology AG
Operating manualSTP3-6-3AV-40-BE-en-1274
Event number Message, cause and corrective measures
8003
Active power limited derating
The inverter has reduced its power output for more than ten minutes due to ex-
cessive temperature.
Corrective measures:
Clean the cooling fins on the rear of the enclosure and the air ducts on
the top using a soft brush.
Ensure that the inverter has sufficient ventilation.
Ensure that the ambient temperature +40°C has not been exceeded.
Ensure that the inverter is not exposed to direct solar irradiation.
8101 to 8104
Communication disturbed
The cause must be determined by the Service.
Corrective measures:
Contact the Service (see Section14, page96).
9002
SMA Grid Guard code invalid
The SMAGridGuard code entered is incorrect. The operating parameters are
still protected and cannot be changed.
Corrective measures:
Enter the correct SMAGridGuard code.
9003
Grid parameter locked
Changes to the grid parameters are now blocked. In order to be able to make
changes to the grid parameters, from now on you must log in using the SMA
Grid Guard code.
9005
Changing of grid parameters not possible > Ensure DC supply
This error can have the following causes:
The parameters to be changed are protected.
The DC voltage at the DC input is not sufficient to run the main CPU.
Corrective measures:
Enter the SMA Grid Guard code.
Ensure that at least the DC start voltage is available (green LED is
flashing, pulsing or glowing).
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