Siemens IQ-400 Access Control
21 fault codes documented
Door Sense LED Blinks once every 2 seconds – Fault: Open circuit
This specific blinking pattern (0.5 Hz) indicates a fault condition where the door sense circuit is in an open circuit state. This can be caused by a disconnected wire or a faulty sensor.
Door Sense LED Blinks 1 time/second – Fault: Short circuit
This rapid blinking pattern (1 Hz) indicates a fault condition where the door sense circuit is in a short circuit state. This may be due to crossed wires or damage to the cable.
Door Sense LED Blinks 4 times/second – Circuit NOT calibrated
This very rapid blinking pattern (4 Hz) signifies that the associated door circuit has not been calibrated. The circuit is therefore not in a functional state and requires setup.
Door Sense LED OFF – Circuit is normal/secure
A Door Sense LED being off indicates that the associated door circuit is in its normal and secure state. This means no alarm or fault condition is currently detected.
Door Sense LED ON – Circuit in alarm condition
A solid ON Door Sense LED indicates that the associated door circuit is in an alarm condition state. This typically means the door is open, or a tamper event has occurred.
E1 – ROM error detected
The Siemens IQ-400 system has detected an error within its Read-Only Memory (ROM), indicating a probable failure of the main printed circuit board (PCB).
E2 – RAM error detected
The Siemens IQ-400 system has detected an error within its Random Access Memory (RAM). This suggests a probable failure of the main printed circuit board (PCB) or an issue with a specific integrated circuit.
E4 – Packet addressing error
The Siemens IQ-400 panel has encountered an error related to packet addressing. This indicates a general failure within the IQ-400 system.
E5 – Packet queuing error
The Siemens IQ-400 panel has encountered an error related to packet queuing, indicating a general failure within the system. This can affect how data packets are processed.
E7 – Terminal number configuration error
The Siemens IQ-400 panel has detected an issue with its terminal number configuration, requiring the system to be readdressed to correct the settings.
ED – Database invalid
The Siemens IQ-400 system's internal database is invalid or corrupted. This requires a full reset and reconfiguration of the IQ-400 address.
EE – Stray jump
The Siemens IQ-400 system has detected an unexpected program jump, indicating a probable failure of the IQ-400 printed circuit board (PCB).
EF – Execution of int vector
The Siemens IQ-400 system has attempted to execute an invalid interrupt vector, indicating a probable failure of the IQ-400 printed circuit board (PCB).
General LED Flashes 1 time per second – Fault: Short circuit
This flashing pattern (1 Hz) for general LED arrays on the Siemens IQ-400 indicates a fault condition where the circuit has a short circuit. This can be caused by wires touching or incorrect connections.
General LED Flashes 2 times per second – Fault: Open circuit
This specific flashing pattern (2 Hz) for general LED arrays on the Siemens IQ-400 indicates a fault condition where the circuit has an open circuit. This suggests a break in the wiring or a disconnected component.
General LED Flashes every 1/2 second – Circuit NOT calibrated
This rapid flashing pattern (2 Hz) for general LED arrays on the Siemens IQ-400 indicates that the circuit is not calibrated. This means it is not fully functional or configured.
General LED OFF – Circuit is normal/secure
For various LED arrays on the Siemens IQ-400 (e.g., SAM Board LEDs), an off state indicates that the associated circuit is operating normally and is in a secure condition.
General LED ON – Circuit in alarm condition
For various LED arrays on the Siemens IQ-400 (e.g., SAM Board LEDs), a solid ON state indicates that the associated circuit is currently in an alarm condition.
IQ-400 not responsive – Communication error with PC
The Siemens IQ-400 panel is not communicating with the PC software. This can be caused by power issues, incorrect system identification, or problems with the communication cables.
Siemens IQ-400E RJ45 Green LED ON – Host connection successful
The green LED on the IQ-400E's RJ45 connector is on, indicating that a physical network link has been successfully established with the host system.
Siemens IQ-400E RJ45 Yellow LED strobe – Attempting host communication
The yellow LED strobing on the IQ-400E's RJ45 connector indicates that the panel is actively attempting to communicate with the host system, signifying ongoing data transfer.