DSC maxsys PC4020KT System Manual page 24

TLM Trouble - A telephone line trouble is generated
when the line voltage drops below 3 volts for more than
30 seconds. A keypad trouble is generated when the
system is disarmed and if selected, a local alarm sounds
when the panel is armed.
TLM TBL Line #1 - When using the PC4700 Fire Module
a telephone line trouble is generated when the line
voltage drops below 3 volts for more than 30 seconds on
line one. A keypad trouble is generated when the system
is disarmed and if selected, a local alarm sounds when
the panel is armed.
TLM TBL Line #2 - When using the PC4700 Fire Module
a telephone line trouble is generated when the line
voltage drops below 3 volts for more than 30 seconds on
line two. A keypad trouble is generated when the system
is disarmed and if selected, a local alarm sounds when
the panel is armed.
FTC Trouble - If the digital communicator is unsuccessful
in communicating with the monitoring station after 10
attempts, a Fail to Communicate trouble is generated. If a
later attempt to communicate is successful the trouble is
cleared.
Bell CCT Trouble - If the bell fuse opens or the bell
circuit is open, a keypad trouble and a Bell Circuit
trouble transmission are generated.
Fire Trouble - If a FIRE loop is open circuit, a keypad
trouble and a Fire Loop trouble transmission are
generated. A trouble on the FIRE loop will unconditionally
initiate an audible and visual (trouble light) indication on
the keypad. This means that even if any other previous
trouble has been silenced, a FIRE loop trouble will restart
the keypad buzzer.
If the PC4010 loses communication with any expansion
module, all Fire/Burglary outputs will "squawk" once
every 10 seconds until a key press is detected on a
keypad, or module communication is restored.
Fire Trouble 2WS - If the fire zone on a PC4700 Fire
Module is opened, a visual keypad trouble (trouble LED
will come on) with audible indication and a fire zone
trouble transmission is generated. The LCD will show the
message "FIRE TROUBLE!! 2 Wire Smoke", until the fire
zone trouble is restored. If there is more than one
PC4700 trouble condition present these trouble
messages will scroll every 3 seconds to the next
message.
Loss of Time - When the PC4020KT is powered up, the
internal time of day clock needs to be set to the correct
time. This trouble is cleared when an attempt is made to
reset the internal time of day clock. See "System Master
Codes" for resetting the time of day clock.
Module Com Fault - The panel has lost communications
with a module and cannot recover it. Check to see if the
module is connected properly, then do a system reset.
See "Diagnostics" in the Programming Manual to
determine which module is not communicating.
COMBUS Low Pwr - Modules are not getting enough
voltage from the COMBUS. Check for proper connection of
COMBUS, or the COMBUS needs to be repowered. See
4204 modules and the 4204 PGM COMBUS power option
for supplying voltage to the COMBUS. See "Diagnostics" in
the Programming Manual to determine which module has
low voltage.
Internal Fault - A problem has occurred with the COMBUS
microprocessors. If this trouble occurs, check connections
to the COMBUS and do a system reset.
4204 Battery TBL - If any PC4204 relay output module's
battery drops below 11.3 volts, a battery trouble is
generated.
To determine which of the PC4204's has the low battery,
check the reporting code transmitted to the monitoring
station or check the event buffer printout if there is a printer
attached, or through downloading. The battery voltage is
checked once every 4 minutes. So the battery trouble may
not restore instantly when the battery voltage is restored.
4204 AC Trouble - If any PC4204 relay output module loses
incoming AC power, the keypad trouble light will indicate a
4204 AC trouble. But there will be no audible annunciation
until there is also a low battery condition.
The PC4204 AC troubles will be transmitted to the
monitoring station immediately.
4204 AUX Trouble - If the Aux fuse on any PC4204 relay
module should open or if the Aux supply is overloaded, a
4204 Aux trouble is generated.
Ground Fault - A Ground Fault trouble condition will occur
if the Earth Ground (EGND) connection is shorted to a
positive voltage source or shorted to a non-earth ground
potential. This trouble will generate an audible and visual
trouble as well as a Ground Fault reporting code
transmission.
Waterflow TBL - If the Waterflow zone on a PC4700 Fire
Module is opened (WFA or WFB), a visual keypad trouble
(trouble LED will come on) with audible indication and a
Waterflow trouble transmission is generated. The LCD will
show the message "FIRE TROUBLE!! Waterflow TBL", until the
Waterflow zone trouble is restored. If there is more than one
PC4700 trouble condition present these trouble messages will
scroll every 3 seconds to the next message.
Cellular Trouble - This indicates that the LINKS unit has
one or more of the following trouble conditions: AC, battery,
loss of cellular or a tamper fault.
DLS Fault TBL - This trouble condition will generate an
audible and visual trouble when the control panel fails to
complete communications with the downloading computer.
Zn Sensor Fault - This trouble condition will occur when a
wireless zone fails to report a zone supervisory for 6 hours.
To view which zone has the trouble press the [✱] key while
viewing the trouble condition. The zone(s) with the trouble
condition will be displayed in numerical order on the
display. A keypad trouble is generated when the system is
disarmed and a visual "Zn Sensor Fault" trouble and trouble
reporting code will be transmitted.
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