Huawei · SUN2000 Solar Inverter
This alarm indicates an abnormal PV string status where a single PV string is lost, both 2-in-1 PV strings are lost, or one of the 2-in-1 PV strings is lost. This suggests a disconnection or fault in the PV string terminals or inverter terminals.
Click steps to track your progress.
Check whether the solar inverter terminals are properly connected.
Check whether the PV string terminals are properly connected.
If a 2-in-1 terminal is used, check whether it is normal.