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jessicabushAug 16, 2025
How to troubleshoot fire controls fault LED 14 flashing fast on Siemens Control Unit?
- MMark ObrienAug 16, 2025
A rapidly flashing fire controls fault LED 14 on your Siemens Control Unit suggests a fault on a monitored control line, specifically one programmed in step 5 to option 12 or 13. Check the line for a short circuit, break, or a missing/defective EOL.