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
Reset the fault through the control panel.
- 2
Attempt to restart the drive.
Verified technical data. Last updated: March 2026
Related Faults
Source: Vacon NX All-in-One Application