Siemens error codes

33 documented Siemens error codes, with meaning, probable causes and a guided diagnostic tree in the app.

DataCIQ

• COMM LOSS — Supervision Network Loss
• DAMPER FAULT — Smoke Damper / Extraction Failure
• DETECTOR FAULT — Detection Failure (No Alarm)
• FAN DAMPER FAULT — Release with Poor Room Integrity
• LINE PROTECTION TRIP — Loss of One MV Feeder
• MAKEUP FAULT — Make-up Water Failure
• NOTIFICATION FAULT — Alarms Not Notified
• PRE-ALARM — False Fire Alarm
• RELEASE CIRCUIT FAULT — Suppression Release Failure
• SENSOR RANGE — Sensor Drift on Water Circuit
• TEMPERATURE ALARM — Transformer Overtemperature / Insulation Fault
• THERMOGRAPHY ALARM — Hot Connection / Thermal Anomaly
• VALVE FAULT — Control Valve Stuck
• VENTILATION FAULT — Battery Room Ventilation Failure

ElectraIQ

• 0xE900 / 0xE901 — IO-Link communication lost (device not responding)
• 6EP1333-4BA00 — Unstable PLC power supply — cyclic restarts
• 6ES7521-1BL00-0AB0 — Digital input module — input not reading (stuck at 0)
• 6ES7522-1BL01-0AB0 — Digital output module — output not activating
• 6ES7531-7KF00-0AB0 — Analog input module — full-scale reading or error
• ANSI 50/51 — Overcurrent Protection 50/51 Trip
• F07900 — Motor Stall / Locked Rotor
• F30001 — Overcurrent Fault
• F30002 — DC Bus Overvoltage Fault
• F30003 — DC Bus Undervoltage Fault
• F30004 — Drive Overtemperature Fault
• F30021 — Ground Fault
• F35000 — Emergency circuit open — E-stop pressed or wiring interrupted
• HART: No Reply — HART communication impossible (no response from transmitter)
• W#16#0049 — CPU in STOP
• W#16#35A3 — Memory error / backup battery depleted
• W#16#38AA — CPU ↔ I/O module communication error (backplane bus)
• W#16#75D1 — Safety module F-CPU/F-DI/F-DO in passivation
• Wire break / Overrange flicker — Noisy analog signal (electromagnetic interference)

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