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  3. [PDF] Operating Instructions
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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.

17 to 24, 37

CPU error

SEW Eurodrive · [PDF] Operating Instructions

What does 17 to 24, 37 mean?

A general CPU error has occurred within the inverter's control unit, indicating an internal processing fault or instability within the microcontroller. These types of errors typically require a complete power cycle of the unit to clear the fault and restore normal operation.

Common Causes

  • Internal CPU processing fault or instability.
  • Control unit internal error.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Reset the fault by switching off the DC 24 V supply voltage to the inverter for at least 10 seconds.

Browse all codes in this manual (11)
Verified technical data. Last updated: April 2026

Related Faults

01Over-current in output stage06Phase failure07DC link voltage too high
Source: [PDF] Operating Instructions
Open Manual (Page 173)Search more codes in this manual