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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

2040

Output DC component overhigh

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

What does 2040 mean?

The DC component in the power grid current exceeds the upper threshold. This indicates an issue with the quality of the current being fed into the grid.

Common Causes

  • The DC component in the power grid current exceeds the upper threshold.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Observe if the SUN2000 automatically recovers after the fault is rectified, as it monitors external operating conditions in real time.

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
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