Siemens Fire Safety Cerberus PRO FC726 fault codes

Displayed for each swapped C-NET device if the C-NET detector line was restarted after devices of the same type were swapped over in their bases. To clear, at least the device types in the corresponding bases must be correct; procedure given: rectify localization errors, connect PC to the Station, load configuration from Station to PC, disconnect PC.

Shown on the Person Machine Interface display for each C-NET device that has been swapped over with another non-stationary device of the same type in its base (e.g. during work on the line), leaving the 'Line' not fault-free.

'Acoustic control line' fault. Action: Check the line for open line/short-circuit, or a missing/defective end-of-line element (EOL).

Action: Check the transmission line; check the faulty 'Station'.

'Fire control line' fault. Action: Check the line for open line/short-circuit; check the function of the external control devices; check the function of any existing feedback switch.

An FC726S or FC726S-10 cannot communicate correctly with other control panels on the documented FC-NET/SASF-NET system.

The 'Site' has a fault. Action: Check whether another fault LED is flashing; if not, check the display, and check whether the 'Fault' control input is activated.

Listed in the fault-message table on the row after System Fault (LED 5), with no LED number of its own. Action: Restart the 'Station'; when the fault is still indicated, exchange the module.

The FC726S or FC726S-10 has detected a line-card, address, C-NET communications/power-line or field-device condition.

The FC726S or FC726S-10 has detected a power-supply condition covered by the commissioning guide.

Transmission equipment has a 'Fault'. Action: Check remote transmission.

Failure of the main CPU. Action: Visual check of the cable connections; check whether the red LED H37 on the operating unit FCM72xx is on — if so, exchange the PMI & mainboard.

Displayed after a C-NET detector line has been read in, if the topology of that line is invalid (source gives four invalid-topology diagrams: stub on stub or loop interrupted; stub on stub on loop; several stubs starting from the same location on loop; loop on loop). Action: check the detector line with line tester FDUL221 (see document 008250); create a valid topology by rectifying the wiring or re-planning the detector line.