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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.

38.1379-2819

Internal Fault: System error (1379-2819)

Danfoss · VLT HVAC Drive FC 102

What does 38.1379-2819 mean?

A general internal system error has occurred within a specific range, indicating a deeper hardware or firmware issue not covered by more specific sub-codes. This type of fault typically points to a critical internal component failure that prevents normal drive operation.

Common Causes

  • Corruption of critical operating system files within the drive's main processor memory due to power fluctuations or improper shutdown.
  • Transient hardware malfunction on the control board, possibly exacerbated by thermal stress or component degradation.
  • Unstable internal DC bus voltage supplying critical control circuitry, leading to erratic processor operation.
  • Severe electromagnetic interference (EMI) causing random bit flips in volatile or non-volatile memory areas.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    1. Note the exact fault code and any sub-codes displayed on the LCP, as these can indicate a more specific memory or function area.

  2. 2

    2. Perform a full power cycle of the frequency converter: Disconnect all input power for 5 minutes, then reapply power.

  3. 3

    3. Connect a laptop with manufacturer software and retrieve the drive's event log to look for preceding or concurrent errors that might provide more context.

  4. 4

    4. Measure the internal DC bus voltage (if safely accessible) to confirm stability and ensure it is within manufacturer specifications.

  5. 5

    5. Perform a factory reset of all drive parameters (e.g., parameter 8-10, setting to 1) and then reload a known good parameter backup configuration.

Browse all codes in this manual (75)
Verified technical data. Last updated: April 2026

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Source: Danfoss VLT HVAC Drive FC 102
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