Faulty block caused by power failure or interrupted block transfer between programmer and PLC. The manual's first action is: “Perform an Overall Reset. Reload the program.”
- Model
- Siemens S5-115U
- Display shows
- SYNFEH
- Type
- Error code
- Source
- Manual p. 138
What SYNFEH means
Faulty block: • Compressing has been interrupted by a power failure. • Block transfer between programmer and PLC was interrupted by a power failure. • Program error (TIR/TNB/BMW) p. 138
Common causes
- Faulty block: • Compressing has been interrupted by a power failure. • Block transfer between programmer and PLC was interrupted by a power failure. • Program error (TIR/TNB/BMW) p. 138
What to do
- Perform an Overall Reset. Reload the program. p. 138
Before you service the product, read the safety instructions in the manual p. 414.
If SYNFEH is still not resolved
The manual gives no further instruction for this code. Open the code table in the PDF or contact Siemens service.
This page summarises what the manufacturer’s manual says about SYNFEH; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Siemens. Found a mistake? Report an error.