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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

06

Phase failure

SEW Eurodrive · MOVIFIT-FC Inverter

What does 06 mean?

A phase failure has been detected in the supply system. This fault indicates a loss of one or more phases in the input power supply, and it is detectable only when the drive is operating under load. Continued operation with a phase failure can damage the motor or inverter.

Common Causes

  • One or more phases missing in the incoming power supply.
  • Faulty connection of power cables to the drive.
  • Internal power supply module failure.
  • Motor connection phase issue.
  • Power fuse blown in one of the phases.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the supply system cables for missing phases.

  2. 2

    Reset the fault by switching off the DC 24 V supply voltage.

Browse all codes in this manual (26)
Verified technical data. Last updated: April 2026

Related Faults

01Overcurrent in output stage04Thermal overload of motor / Overcurrent in brake chopper07DC link voltage too high
Source: SEW Eurodrive MOVIFIT-FC Inverter
Open Manual (Page 126)Search more codes in this manual