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ErrorLib — Industrial Fault Code Library

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Grid Failure

Grid Failure

Huawei · SUN2000-(3KTL-10KTL)-M1 Solar Inverter

What does Grid Failure mean?

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.

Common Causes

  • The DC is on and the AC is off.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    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.

Browse all codes in this manual (24)
Verified technical data. Last updated: April 2026

Related Faults

2001High string input voltage2002DC arc fault2003DC arc fault
Source: Huawei SUN2000-(3KTL-10KTL)-M1 Solar Inverter
Open Manual (Page 71)Search more codes in this manual