25
Microprocessor watchdog fault
Vacon · NX Liquid-Cooled Drive
What does 25 mean?
A microprocessor watchdog fault indicates faulty operation or a component failure within the drive's control unit. Subcode S1 points to a CPU watchdog timer issue, while S2 indicates an ASIC reset.
Common Causes
- Microprocessor has encountered an unrecoverable error.
- Internal hardware fault in the main control board.
- Software crash or watchdog timeout.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Reset the fault and restart the drive.
Verified technical data. Last updated: March 2026
Related Faults
Source: Vacon NX Liquid-Cooled Drive