Phase VW Short

What does F043 mean?

Excessive current has been detected between the drive's V and W output terminals, indicating a short circuit. This could be a phase-to-phase short in the motor windings or within the cables connecting the drive to the motor. This is a critical fault that can cause severe damage to the drive's output power stage (IGBTs) if not immediately addressed.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If the motor and wiring are clear, but the fault persists upon reconnection, replace the drive as an internal short circuit in the power section may exist.