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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

44

Device changed (different type)

Vacon · NX Liquid-Cooled Drive

What does 44 mean?

An option board or power unit has been changed, and a new device of a different type or rating than the previous one has been detected. Subcodes S1-S5 specify the changed component: Control board, Control unit, Power board, Power unit, or Adapter board/slot.

Common Causes

  • Device type changed from expected (different model detected).
  • Incorrect device connected, not matching the programmed type.
  • Configuration mismatch for a new device type.
  • Device replacement with an incompatible model.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Reset the fault to acknowledge the change.

  2. 2

    If an option board was changed, reconfigure all relevant option board parameters according to the new device's specifications.

  3. 3

    If a power unit was changed, reconfigure all relevant AC drive parameters to match the new power unit's rating and type.

Browse all codes in this manual (52)
Verified technical data. Last updated: April 2026

Related Faults

1Overcurrent10Input Phase Failure12Brake Chopper Supervision Fault
Source: Vacon NX Liquid-Cooled Drive
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