Installation manual

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SIMPLEX Fault Assistance Guide RevA
29 April 2009
1.1.1 Resetting 4100 Latched Faults
When fault finding the Simplex® 4100U Fire Detection Panel some faults will ‘latch’ and
not clear with the use of the ‘System Reset’ button (described on previous page). To clear
latched faults or some networking issues it may be warranted to use a CPU Reboot
otherwise known as a Warm-Start.
To perform a Warm-Start, gain access to the CPU card. The CPU card is generally the
only legacy card (vertically mounted) with its components side facing in a different
direction (relative to other cards mounted in a similar fashion) – otherwise it will be the only
card in the panel with a small, flat and round ram battery located on it. Once located, find
the small push-button switch located on the bottom edge of the card (4100U CPU card
shown below). Push this button and the panel will then reinitialise. Allow 2-5mins for the
panel to become fully active and re-establish communications with all its associated
devices.
NOTE: Starting the panel from a powered-down state is referred to as a cold-start.