FIRECLASS Fire Alarm Control Panels 3.1 Fault Conditions on devices
Fault Finding Guide Doc. version 2 15
CONTACT WIRING SHRT Raised on the 410MIM, 410SIO, 410TSM and QIO devices if a short circuit is
present on the supervised input.
DET LTA HI WARNING The dirtiness value of the photo detector is at 80% or more. If Detector Con-
dition Monitoring is enabled for the point, this condition is raised before the
device raises High LTA.
The detector is still working, but should be replaced at the next regular main-
tenance.
The current dirtiness value can be viewed using the panel interface or printed
in a report.
DET LTA LO WARNING This fault is raised on photo devices.
If Detector Condition Monitoring is enabled for the point, the fault is triggered
if the LTA falls below the warning threshold. At this threshold level the device
is still working but it should be replaced at the next service.
DETECTOR REMOVED This fault is used by the 410DDM when configured to monitor circuits of
conventional devices with a diode base.
DEVICE FAULT The device is present and replying, but the reply indicates a device error. This
is the catch-all fault when a more meaningful fault cannot be raised.
DEVICE POWER UP If one loop device was removed and re-inserted again. The fault is cleared after
the initialisation of the device.
DISABLED FOR TEST If the user isolates non-LED outputs, the state is logged.
The panel is also placed into Commissioning Mode.
DOOR CTRL FAULT Raised on an 410SNM if configured as a door control.
The Auxiliary voltage is not present.
DOOR CTRL NO RESPNS This fault is raised by 410RIM and 410SNM units if configured as door control
units and not responding to polls.
DOOR CTRL OPEN CCT Raised on an 410SNM or 410QMO if configured as a door control if the super-
vised output is open.
DOOR CTRL SHORT CCT Raised on an 410SNM or 410QMO if configured as a door control if a short cir-
cuit is present on the supervised output.
DOOR CTRL STUCK If the monitored contact is stuck on a 410RIM or 410SNM.
The relay cannot be switched in the state which is required by the firmware.
EXT PSU LOST Reported by the 410DIM and 410DDM if it has problems with its external
power source.
EXT. CTRL FAULT Raised on 410SNM devices if configured as an Extinguishing Control unit.
EXT. CTRL NO RESPNS Raised on an 410SNM if configured as Extinguishing control.
LAV800 currently raises the general fault, ‘No Response’.
EXT. CTRL OPEN CCT Raised on 410SNM devices if configured as an Extinguishing control unit.If
supervised output is open.
EXT. CTRL SHORT CCT Raised on 410SNM devices if configured as an Extinguishing control unit.
There is a short circuit present on the supervised output.
EXT. CTRL STUCK Raised on 410SNM devices if configured as an Extinguishing control unit.
The relay cannot be switched in the state which is required by the firmware.
F/W INCOMPATIBLE This fault is used to indicate an incompatibly between the main panel firmware
and the firmware in a support chip.
Compatibility requirements are given within the documentation covering the
particular version of FIRECLASS firmware.
Logged Message Use
Table 9: Standard Point Fault States (cont.)
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