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

Alarm 2063Temperature High

Name in the manufacturer's documentation (fault list): Temperature High[1]

In plain words (editorial)

The inverter is too hot. The manual names poor ventilation, a high ambient temperature, a blocked fan or heat sink, or abnormal operation of the device. The inverter shuts down.

When to call a service technician: Improve ventilation around the inverter. If it keeps happening, contact your installer.

✎ 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. 54 official manufacturer document quote verified 2063 Temperature High
  2. [2] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 54 official manufacturer document quote verified the device is installed in a place with poor ventilation.
  3. [3] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 54 official manufacturer document quote verified the ambient temperature is too high.
  4. [4] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 54 official manufacturer document quote verified the device works abnormally.
  5. [5] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 54 official manufacturer document quote verified the fan airflow is obstructed or the heat sink is blocked.
  6. [6] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 55 official manufacturer document quote verified check the ventilation and ambient temperature of the device installation position.
  7. [7] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 55 official manufacturer document quote verified if the ventilation is poor or the ambient temperature is too high, improve the ventilation and heat dissipation.
  8. [8] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 54 official manufacturer document quote verified the device is shut down.