Event 448, 449 (Sunny Portal: 4013)

Event message:

• String [#] reverse polarity

Corrective measures:

• Check whether there is reverse polarity on the corresponding PV string. If so, open the DC switch and adjust the polarity if the solar irradiation is low and the string electrical current is below 0.5 A.

• If the fault cannot be rectified using the indicated corrective measures, contact Service.