Troubleshooting
5–4 975-0298-01-01
Fault Reference Table
Table 5-2
Fault Reference Table
Fault
number Message Type Cause Action
F250 System clock not
set. Set correct
time.
Manual On initial startup, the clock
needs to be set. The system
will not operate correctly until
it is.
Set the clock to the correct
time. See “Using the Clock
Menu” on page 3–10.
F251 A device is lost.
Check connection.
Manual The System Control Panel has
lost communications with
another device on the
network.
Check network connection
between the System
Control Panel and the
device.
F252 New device
detected.
Check device
settings.
Manual You have connected a new
device to the network or
reconnected a disconnected
device.
Acknowledge the message
and check that the device is
properly configured.
F500 Internal failure.
Service required.
Manual The silicon serial ID number
has failed and the System
Control Panel has gone into
Standby mode.
Reset the System Control
Panel by removing and
restoring network power. If
problem persists, call
customer service.
F501 Memory failure.
Service required.
Manual The System Control Panel has
suffered a non-volatile
memory failure.
Reset the System Control
Panel by removing and
restoring network power. If
problem persists, call
customer service.
F503 Internal reset. Call
customer support.
Manual The real-time clock in the
System Control Panel has
failed.
Reset the System Control
Panel by removing and
restoring network power. If
problem persists, call
customer service.
F504 Lost network
connection.
Automatic The System Control Panel has
lost communications with the
network because of a faulty
connection or electronic
signal disruption.
Check connection between
the System Control Panel
and the network.
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