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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.

41

IGBT temperature

Vacon · NX Liquid-Cooled Drive

What does 41 mean?

The IGBT Inverter Bridge overtemperature protection has detected an excessively high short-term overload current, indicating a thermal stress condition.

Common Causes

  • IGBT temperature approaching or exceeding operational limits.
  • High temperature detected on the Insulated-Gate Bipolar Transistor.
  • Overload condition causing increased IGBT temperature (P1-20).
  • Inadequate cooling for the IGBT module.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Evaluate the actual motor loading and compare it against the drive's continuous and overload current ratings.

  2. 2

    Verify the motor size and nominal current rating are appropriate for the drive's specified output capacity.

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
Open Manual (Page 155)Search more codes in this manual