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
Reset the fault and attempt to restart the drive.
- 2
If the fault re-occurs, note the subcode displayed in T.14 for specific diagnostic information.
- 3
Contact your local distributor, providing the fault code and subcode for further assistance.
Verified technical data. Last updated: March 2026
Related Faults
Source: Vacon NXP/C