SMA Sunny Tripower CORE2 - Event 544, 545 (Sunny Portal: 4019); Event 546, 547 (Sunny Portal: 4020); Event 548-563 (Sunny Portal: 4002); Event 564, 565 (Sunny Portal: 4021)

12 Event messages
SMA Solar Technology AG
Operating manual STP110-60-BE-en-16 93
12.2.80 Event 544, 545 (Sunny Portal: 4019)
Event message:
• String [#] reverse polarity alarm
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.
12.2.81 Event 546, 547 (Sunny Portal: 4020)
Event message:
• String [#] reverse polarity alarm
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.
12.2.82 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.
• If the fault cannot be rectified using the indicated corrective measures, contact Service.
12.2.83 Event 564, 565 (Sunny Portal: 4021)
Event message:
• String [#] reverse polarity alarm