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Huawei · PV inverters · Huawei SUN2000-KTL-M1 (three-phase inverter, 3–10 kW, battery-ready)

Alarm 2040DC Component Overhigh

Name in the manufacturer's documentation (fault list): DC Component Overhigh[1]

In plain words (editorial)

The DC component in the inverter's AC current is too high; the inverter shuts down and recovers automatically once the fault is rectified.

When to call a service technician: If the alarm occurs frequently, contact your dealer or Huawei technical support.

✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.

The Polish page has more detail (plain-language explanation, safe checks, guides): Read in Polish →

Sources

Every statement has a footnote to the document and PDF page. “Quote verified” means the quote was found automatically in the text of that page.

  1. [1] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 47 official manufacturer document quote verified 2040 DC Component Overhigh
  2. [2] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 47 official manufacturer document quote verified the dc component in the ac current exceeds the upper threshold.
  3. [3] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 46 official manufacturer document quote verified the device detects its external working conditions in real time. after the fault is rectified, the device automatically recovers.
  4. [4] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 47 official manufacturer document quote verified if the alarm occurs frequently, contact your dealer or technical support.
  5. [5] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 46 official manufacturer document quote verified the device is shut down.