SMA Sunny Tripower CORE2 - Page 92

12 Event messages
SMA Solar Technology AG
Operating manualSTP110-60-BE-en-1692
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.
12.2.77 Event 538, 539 (Sunny Portal: 4016)
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.
12.2.78 Event 540, 541 (Sunny Portal: 4017)
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.
12.2.79 Event 542, 543 (Sunny Portal: 4018)
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.