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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.

F108-156

Faulty RAM test

SEW Eurodrive · MOVIDRIVE MDX60B/61B Variable Speed Drive

What does F108-156 mean?

A fault was detected during the internal RAM test of the DCS..B option. This indicates an issue with the memory component crucial for operation.

Common Causes

  • RAM test failed during system initialization.
  • Specific RAM cells are not responding correctly.
  • Memory controller unable to access RAM sectors.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Replace DCS..B option.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

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F108-101Internal processing fault PROFIsafeF108-103Internal processing fault PROFIsafeF108-105Internal processing fault PROFIsafe
Source: SEW Eurodrive MOVIDRIVE MDX60B/61B Variable Speed Drive
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