TROUBLESHOOTING
The following network-related troubles can occur on the FireNET L@titude Fire Alarm Control Panel. See the
detailed descriptions below for explanations on each trouble message.
Trouble Message
Description
Network Communications Trouble
This event indicates there is no communication between this panel and its neighbor.
This could be caused by a configuration error (such as using the wrong baud rate), a
wiring error, or damage to the wires connecting the panel to its neighbor. If this trouble
occurs on one link on the panel, then the panel is still in communication with other
panels on the network. If this trouble occurs on both links on the panel, then the panel
is no longer in communication with other panels on the network.
Unexpected Network Node
This event indicates a panel has been detected on the network that is not in the
configuration. This is a configuration error, and should never occur once the network
has been properly configured.
Network Card Missing
This event indicates that the panel is configured for networking, but there is no
network card installed, or it is installed incorrectly. This trouble may also occur if the
network card processor fails.
Connection Error
This event indicates that the panel has failed to get a meaningful result for the link
impedance measurement. This may occur if stray leakage current enters the link
wiring from elsewhere, or if there is a component failure or missing jumper on the
network card. This event may also be shown when the network is disconnected or
when the NET OUT + wire is disconnected.
Network Panel Missing
This event indicates that another panel is configured but has not been found on the
network. This may occur if the missing panel is switched off or disconnected from the
network. This fault will also occur if there is no communication between a panel and
either of its neighbors on both links. In this case, the panel will show multiple
instances of this trouble; one for each other panel on the network.
Network Node Double Addressed
This event indicates that more than one panel on the network has the same node
number. This is a configuration error, and should never occur once the network has
been properly configured.
Full Short Circuit Trouble
This event indicates that a short circuit has been detected by the link impedance
measurement. This indicates a wiring error, or damage to the wires connecting the
panel to its neighbor.
Full Open Circuit Trouble
This event indicates that an open circuit has been detected by the link impedance
measurement. This indicates a wiring error, or damage to the wires connecting the
panel to its neighbor. The following two troubles are optional, and are not included in
the default firmware build.
Partial Short Circuit Trouble
This event indicates that the link impedance measurement has detected an
impedance below the normally expected range.
Partial Open Circuit Trouble
This event indicates that the link impedance measurement has detected an
impedance above the normally expected range.
Hochiki America Corporation
FireNET L@titude Network Module (S723) Information
Guide
Version 1.05 | May 2019 | MAN-1436HA
Page 13
Troubleshooting
