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FCI 72 LED's
Posted: Wed Oct 03, 2012 1:09 am
by DPW
I have 6 old FCI 72 panels that have dimly lit red LED's even though there are no alarms present. Is there anything from the manafacturer stating that this is a known problem?
Re: FCI 72 LED's
Posted: Wed Oct 03, 2012 4:53 am
by Firetech1701A
On older systems when a LED is dimly lit that usually mean a component such as a diode or transistor on the board is letting enough voltage pass through when it should not. Most of the time there nothing you can do unless you have to faulty component on the board replaced.
Re: FCI 72 LED's
Posted: Wed Oct 03, 2012 5:54 pm
by Fireworks
Older systems supervised the alarm LED`s by putting a small current through them, which caused them to glow dimly, same as they did with filaments bulbs.
Now that LED`s have proven their reliability I don`t think any one supervises LED`s, that I know of.
Firetech could also be right though.