25

Microprocessor Watchdog Fault

Vacon · NX All-in-One Application

What does 25 mean?

This fault indicates an internal operation malfunction or a defective component within the drive's microprocessor system. It suggests an issue with the drive's core control logic or hardware, potentially leading to unstable operation.

Common Causes

  • The system's watchdog timer has not been reset within its expected interval.
  • A software loop has become stuck or is not executing correctly.
  • Microprocessor failure or reset condition.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Reset the fault through the control panel.

  2. 2

    Attempt to restart the drive.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Vacon NX All-in-One Application