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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.

F30664

Error while booting

Siemens · DCM

What does F30664 mean?

An error has occurred during the power unit's booting process, preventing it from starting up correctly. The fault value (r0949) is provided for internal Siemens troubleshooting. This issue can cause the drive to remain offline or fail to respond to commands.

Common Causes

  • Corrupted firmware or operating system image on the power unit's internal memory (e.g., flash memory).
  • Hardware malfunction within the power unit's control board or internal communication bus.
  • Incompatible hardware revision of the power unit with the connected control unit (e.g., mismatched versions).
  • Power supply instability or transient voltage drop during the boot sequence causing initialization failure.
  • Critical internal component failure (e.g., processor, memory chip) preventing the boot process.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Perform a complete power cycle of the drive system (main power off/on) to clear any transient boot issues.

  2. 2

    Check the connections between the control unit and the power unit (e.g., Drive-Cliq cable) for secure fit and damage.

  3. 3

    Attempt a firmware update for the power unit using a valid firmware image (e.g., via SD card or engineering software).

  4. 4

    Record the fault value displayed in parameter r0949 for reference when contacting technical support.

  5. 5

    If possible, swap the power unit with a known good, compatible unit to rule out a hardware defect in the power unit itself.

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

Related Faults

A01019Writing to the removable data medium unsuccessfulA01020Write to RAM disk unsuccessfulA01028Configuration error
Source: Siemens DCM
View Official PDFSearch more codes in this manual