12 Event messages
SMA Solar Technology AG
Operating manualSTP110-60-BE-en-1690
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 0.5A.
• If the fault cannot be rectified using the indicated corrective measures, contact Service.
12.2.70 Event 464, 465 (Sunny Portal: 4020)
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 0.5A.
• If the fault cannot be rectified using the indicated corrective measures, contact Service.
12.2.71 Event 466, 467 (Sunny Portal: 4022)
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 0.5A.
• If the fault cannot be rectified using the indicated corrective measures, contact Service.
12.2.72 Event 468, 469 (Sunny Portal: 4023)
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 0.5A.
• If the fault cannot be rectified using the indicated corrective measures, contact Service.