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

Alarm 2065Update Failure or Version Mismatch

Name in the manufacturer's documentation (fault list): Update Failure or Version Mismatch[1]

In plain words (editorial)

A firmware update failed or the software versions do not match. The manual also names an excessive internal temperature, the DC side not being powered, or optimizers that need updating. The inverter cannot start.

When to call a service technician: Repeat the update (via the installer's app). If it fails several times, contact your vendor or 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. 58 official manufacturer document quote verified 2065 Update Failure or Version Mismatch
  2. [2] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 58 official manufacturer document quote verified the update failed.
  3. [3] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 58 official manufacturer document quote verified the communication protocol version is incorrect.
  4. [4] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 58 official manufacturer document quote verified the temperature in the device is too high.
  5. [5] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 58 official manufacturer document quote verified the dc side of the device is not powered on.
  6. [6] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 58 official manufacturer document quote verified the optimizer needs to be updated. otherwise, system performance may be deteriorated.
  7. [7] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 59 official manufacturer document quote verified perform the update again.
  8. [8] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 59 official manufacturer document quote verified if the update fails for multiple times, contact your vendor or technical support.
  9. [9] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 59 official manufacturer document quote verified wait until the device temperature drops or the dc power is turned on, and then perform the update again.
  10. [10] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 59 official manufacturer document quote verified update the optimizer.
  11. [11] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 58 official manufacturer document quote verified the device cannot be started.