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251

New Type Code

Danfoss · VLT HVAC Basic FC 101

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The frequency converter has detected a change in its internal type code, typically occurring after a control card replacement or a full drive swap. This alarm acts as an informational message signaling a significant change in the drive's identity or configuration. While not an immediate operational fault, it indicates a need to verify parameter settings for the new hardware.

Häufige Ursachen

  • The control card (CPU board) of the frequency converter has recently been replaced.
  • The entire frequency converter unit has been swapped for a new or refurbished unit.
  • A major firmware update or parameter restoration process has been performed, altering the internal type code.
  • This is an informational alarm, signaling a change in the drive's fundamental configuration.
  • The drive's internal type code was corrupted and automatically corrected or flagged.

Reparaturschritte & Checkliste

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

  1. 1

    Confirm recent service history, specifically the replacement of the control card or the entire drive unit.

  2. 2

    Acknowledge the alarm via the Local Control Panel (LCP) and reset the drive (e.g., by power cycling or using P14-20 reset function).

  3. 3

    If a control card was replaced, ensure that backed-up parameters (e.g., using LCP copy/paste) were correctly restored.

  4. 4

    Verify that the drive functions as expected and the motor control is stable after the type code change.

  5. 5

    Check the type code displayed on the LCP against the drive's nameplate or original documentation for consistency.

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Verifizierte technische Daten. Zuletzt aktualisiert: March 2026

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