SMA SC 500HE-20 - Manual (Page 78)

10 Troubleshooting SMA Solar Technology AG
78 SCxxxHE-20-BE-BEN111210 Operating Manual
3803 Error message
< DC overcurrent >
– The current of the PV array is too high.
Measure
< Check DC generator >
– Check DC input current.
– Check module wiring and plant design.
4003 Error message
< Reverse currents or input polarity reversed >
– Reverse currents detected in the PV array or DC connection polarity is
reversed.
Measure
< Check DC generator >
– Check PV modules for short circuit.
– Check module wiring and plant design.
– Make sure the DC terminals have the correct polarity.
Error no. Error message, cause of error and corrective measure