Installation and programming manual
Errors and faults 107
Chapter 9
ERRORS AND FAULTS
9-1
Faults detected by the
control panel
The following table shows the system faults which are signaled on the yellow LED on the
keypad :
FAULT
Message on the User menu,
“View/Faults”
Probable cause Note
Zone fuse blown
Zone fuse fault
Excessive current draw on the “+AUX” terminals
of the control panel
BUS fuse blown
IBUS fuse fault
Excessive current draw on the “+” terminal of
the control panel
Backup battery ineffi-
cient or not connected
Low battery
The backup battery of the control panel is
almost empty or disconnected.
Primary power-source
loss
Mains failure
The primary power source voltage (230V~) has
failed or has been disconnected
The PSTN landline is
unavailable
Tel. line down
Trouble on the PSTN landline
Interference
Jamming
Wireless transmission is poor
Wireless detector bat-
tery low
Low battery WLS
The battery of at least one wireless detector is
running out
To view “Low battery WLS” and
“WLS zone loss” signalling,
access the user menu, go to
“View/Faults”, press to view
the list of devices involved.
Wireless detector not
operative
WLS zone loss
At least one wireless detector is not operating
Nexus GSM dialler
faults
Nexus fault / Low
signal
The GSM network signal is insufficient
Press on “Nexus fault” to
access the list of current faults.
Nexus fault / GSM
module fault
The GSM module of the Nexus dialer is not oper-
ating properly. Call your Installer company
Nexus fault / SIM
commun.fault
The SIM card does not respond or is not present.
The SIM card PIN is not disabled.
Nexus fault / Low
Credit
The credit left on the SIM card is below the min-
imum credit threshold.
Nexus fault / Pro-
viderUnavailable
The GSM network provider of the SIM in use is
unavailable.
Nexus fault / GPRS
conn. lost
NEXUS/G detects problems on GPRS network
communications
IP connection loss
IP conn. lost
The verification of the IP connection fails.
Device loss or tamper
in progress
LossTamp.ongoing
One of the following events has occurred:
• Control panel open
• Dislodged panel
• Expansion tamper
• Keypad tamper
• Reader tamper
• Sound.flash.Tamp
• Expansion loss
• Keypad loss
•Reader loss
• Sound.flash.Loss