Fault Conditions - Simplex 4020 Operating Manual

4020 OPERATORS MANUAL

10.3 Fault Conditions

The table below lists the various fault messages displayed by 4020 FIP
FAULT MESSAGE
Fire Alarm Zone
FAULT
Bat :FLT
Battery Fault
Bat: LO
Bat: HI
Control Circuit Open
Control Circuit Short
Ground Fault
Document No: 4020-M010
CAUSE OF FAULT
Open Circuit on Fire
Alarm Zone
- Missing End-of-Line
resistor.
- Break in zone cabling
- Detector removed from
base
Batteries disconnected
from Charger circuit.
Battery Voltage is Low
- Battery charger not
working,
- Batteries being charged
after panel has been
operating for extended
period on battery supply
Battery charger voltage is
set too high.
Open circuit detected on
supervised control circuit
output.
Short circuit detected on
supervised control circuit
Short to Earth on external
field wiring
1st February, 1997
Page 45
FAULT RECTIFICATION
Check Detectors in zone.
If all detectors installed
Call service company for
repair.
Reconnect batteries to
the panel.
Check battery voltage.
Check if booster LED is
"ON" . If LO condition is
indicated for more than 8
Hours call service
company.
Remove batteries and
check charger voltage,
should be 27.6 VDC.
Refer section 9.3 for
battery adjustment.
Check battery charger
fuse F2.
Missing End-of-line
resistor.
- break in cabling
- output Fuse blown.
Check and replace.
Blocking diode missing/or
wired incorrectly for
supervised load.
Short on zone cabling
Check external field
wiring for short to earth
connection.
Issue 2.0