F1003 fault in Siemens V70 Drive indicates an Acknowledgement delay when accessing the memory. This means the internal processor could not read or write to the memory module in time, suggesting a hardware or memory corruption issue.
Cause: A memory area was accessed that does not return a “READY”.
Remedy:
- Carry out a POWER ON (power off/on) for all components.
- Contact the Hotline.
