37

CPU fault

SEW Eurodrive · MOVIFIT-FC Inverter

What does 37 mean?

An internal CPU fault has occurred within the unit. This indicates a general internal processing error, which might be transient or indicate a more serious hardware issue.

Common Causes

  • Internal CPU malfunction detected.
  • CPU reset signal not received or corrupted.
  • Watchdog timer expired due to software hang.
  • Memory corruption affecting CPU operations.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

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

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Verified technical data. Last updated: March 2026

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Source: SEW Eurodrive MOVIFIT-FC Inverter