Service and troubleshooting
EST3 Installation and Service Manual 8.73
differs for different objects and circumstances. Pull stations are
polled much more frequently than detectors or modules. Devices
that report communication failure are polled more often than
devices that are not experiencing the failure.
• Devices with high message counts but few errors may be
pull stations or devices that change state regularly such as
monitor modules.
• Devices that have increased error counts and only marginally
increased message counts may indicate wiring or device
problems.
• Devices with low message counts and an equal number of
errors are non-existent devices.
• All 198 addressed are polled occasionally to identify any
devices that may have been installed and not configured.
If the message and error counts are confused because of the
length of time the circuit has been running, restarting the panel
will cause a restart of the circuit and the zero the counters. You
may need to monitor the circuit for twenty minutes or more
before a trend in messages becomes apparent. Locating
intermittent faults may require extended operating periods.
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