Simplex 4100 Series Manual page 39

19. RZDU x
This displays the current status of any RZDU which has an off-normal condition.
20. Net msg discard
This occurs only with network systems. The local system discarded a message that was repeatedly
sent to another device on the network that did not acknowledge it. To allow other messages to be
sent on the network, the unacknowledged msg was discarded. This should occur only in cases of
extreme network loading, if the system addressed does not exist or is off line, or if network cables are
broken.
21. Net port hw fault
This indicates a hardware fault with the serial port interfacing to the network. Call the service
company.
22. Clock crystal Timebase check fail
This error message occurs only at startup and indicates the frequency of the clock chip on the
Controller is out of tolerance to the microprocessor. The Controller will restart and try the test again.
23. Clock register write read fail
A test of the Controller time/date clock registers has failed. The Controller will restart and try the test
again.
24. Clock chip RAM write read fail
A test of the Controller‟s clock RAM has failed. The Controller will re-start and try the test again.
25. Shift reg clocking fault
This is the same fault as "Shift register bus fault" above. However, this fault occurs only at startup or
on exit from programming mode when the panel is trying to determine what modules are present.
26. Battery is low
This message indicates the battery voltage is low. When PSU faults are inhibited for 24 hours, this
message will still appear in a system fault recall if the voltage is low even though it is not creating a
system fault.
27. Battery connection fail
This message indicates the battery is not connected, but may occur with the battery connected if the
battery is faulty or has a low charge. When PSU faults are inhibited for 24 hours, this message will
still appear in a system fault recall if the battery appears to be not connected even though it is not
creating a system fault.
28. Battery capacity low
This message indicates an automatic battery test failed, i.e. the battery has a low charge.
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