181922 Rev B
17
Controlled by ECCN:EAR99
PROPRIETARY INFORMATION –
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EAR DATA
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Page of this document or file
SYMPTOM
PROBABLE CAUSE
CORRECTIVE ACTION
Protection Panel green
SYSTEM OK lamp off, yellow
fire TROUBLE lamp on solid
and audible alarm beeping.
Component not connected or
damaged harness in the
extinguisher circuit
Check the harness connection
at the extinguisher
Use a value simulator and
starting at the first connection
in the extinguisher circuit
systematically check the
voltage at each connection
until the section where the
fault exists is identified.
NOTE: The valve circuit
voltage should measure in the
millivolts.
Protection Panel green
SYSTEM OK indicator off,
yellow fire TROUBLE
indicator on blinking and
audible alarm beeping.
Component not working, not
connected, or damaged
harness in the fire detection
or extinguisher circuits
Check Fire sensors.
Check harness connections at
fire sensors.
Check EOL connections
Check for the correct voltage
values on each of the fire
circuits. (Pin A: 22-26 volts,
Pin B: Ground, Pin C: 11-15
volts
If the voltage at Pin A or C is
low, use an EOL and starting
at the first connection in the
Fire circuit systematically
check the voltage at each
connection until the section
where the fault exists is
identified.
Protection Panel green
SYSTEM OK indicator off,
yellow gas TROUBLE
indicator on solid and audible
alarm beeping.
Gas leak detector fault
Check gas detectors’ LED
indicators.
If a gas detector’s LED
indicator is blinking red/green,
refurbish with p/n 420483
refurbishment kit or replace
sensor.
