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

Alarm 2011String Reverse Connection

Name in the manufacturer's documentation (fault list): String Reverse Connection[1]

In plain words (editorial)

A PV string is connected with reversed polarity (plus and minus swapped) or PV+ is short-circuited to PV–. The manual says to wait until the string current falls below 0.01 A before switching the DC switch off.

When to call a service technician: Have an installer correct the string wiring.

✎ 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. 31 official manufacturer document quote verified 2011 String Reverse Connection
  2. [2] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 31 official manufacturer document quote verified a pv string is connected in reverse polarity
  3. [3] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 31 official manufacturer document quote verified pv+ is short-circuited to pv–
  4. [4] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 31 official manufacturer document quote verified wait until the pv string current decreases to below 0.01 a, set dc switch to off
  5. [5] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 31 official manufacturer document quote verified reset the device on the local app or webui of the upper-layer controller