F-03

Ground fault

SEW Eurodrive · MCBSM

What does F-03 mean?

A ground fault has been detected in the motor, its supply lead, or within the MOVITRAC® B inverter itself, causing an immediate switch-off with inhibit. This is a critical safety and equipment protection issue. Unresolved ground faults can lead to severe damage or safety hazards.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    If external components are verified, the inverter may have an internal ground fault, requiring replacement.

Source: SEW Eurodrive MCBSM
View Official PDF