Huawei · SUN2000-(3KTL-10KTL)-M1 Solar Inverter
This alarm is reported when the DC input is on but the AC output is off. The SUN2000 cannot operate in grid-tied mode under these conditions.
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Ensure the AC switch between the SUN2000 and the power grid is turned on. The SUN2000 starts normally only after the fault is automatically rectified.