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.
Source: Vacon NX Liquid-Cooled Drive
Open Manual (Page 154)