Huawei · SUN2000-(3KTL-10KTL)-M1 Solar Inverter
The difference between grid phase voltages exceeds the upper threshold. This indicates an imbalance in the three-phase power grid, which can affect the inverter's stable operation.
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Monitor if the alarm occurs occasionally, indicating a temporary power grid abnormality. The SUN2000 automatically recovers when the grid stabilizes.
If the alarm persists, check whether the power grid voltage is within the acceptable range. If not, contact the local power operator.
If the alarm lasts for a long time, check the AC output power cable connection.