Event 548-563 (Sunny Portal: 4002)

Event message:

• String [#] disturbance of the output current

Corrective measures:

• Check whether the PV module is shaded, heavily soiled or covered with snow.

• Ensure that the PV module shows no signs of abnormal aging.

• Ensure that the grid frequency is not increased. In this case, the inverter switches off individual strings due to derating.

• Ensure that the string is not connected with reverse polarity.

• If the fault cannot be rectified using the indicated corrective measures, disactivate the parameter StrDetectEna under Extended Model 2-1 RW.