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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.

8

System fault

Vacon · NXP/C

What does 8 mean?

This fault indicates a component failure or faulty operation within the frequency converter system. Subcodes in T.14 provide more specific information, such as issues with motor voltage feedback (S1), ASIC trip (S4), VaconBus disturbance (S5), charging switch (S6, S7), power unit communication (S9, S10, S11), or lack of power to the driver card (S8). If not resolved, it indicates an internal hardware or communication issue.

Common Causes

  • General internal system error requiring diagnostics.
  • Power supply fluctuations beyond specified limits.
  • Communication loss between internal modules.
  • Software execution error or crash.
  • Parameter configuration error.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Reset the fault and attempt to restart the drive.

  2. 2

    If the fault re-occurs, note the subcode displayed in T.14 for specific diagnostic information.

  3. 3

    Contact your local distributor, providing the fault code and subcode for further assistance.

Browse all codes in this manual (11)
Verified technical data. Last updated: April 2026

Related Faults

10Input line supervision11Output phase supervision12Brake chopper supervision
Source: Vacon NXP/C
Open Manual (Page 107)Search more codes in this manual