FT2GAS
Gaseous Extinguishing System
Rev No. 1.3
16
In addition to the LED indicators on the system front display, there are four yellow fault LED indicators
located on the gas control board (SUB928) inside the cabinet. The internal LED indicating patterns are
described in Table 7 below.
Table 7 Gas Control board Fault LED Indications
LED Indicator LED Pattern
Description
Gas
Steady ON
Multiple faults detected.
Flash 1
Gas module power supply fault
Flash 2
Gas release output fault
Flash 3
Gas module flash memory fault.
Signs
Steady ON
Multiple faults detected.
Flash 1
System inoperative warning sign output fault
Flash 2
Alarm warning sign output fault
Inputs
Steady ON
Multiple faults detected.
Flash 1
Gas lock-off valve input fault.
Flash 2
Manual gas release input fault.
Flash 3
Gas discharged sensor input fault.
Local
Steady ON
Multiple faults detected
Flash 1
LCS manual gas release input fault.
Flash 2
LCS isolate input fault.
Flash 3
Gas master isolate input fault or display connection fault.
