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ef sign & unable to set the alarm?

My alarm has a EF sign on it & I cannot set the alarm ?what should I do ?
A Raj, August 2010
As below probably a scantronic panel.
Care to confirm this.
Try a walk test and see what zone comes up,as zone one may not be the exit zone.

Alarm, August 2010
if its a scantronic,then you have a faulty door contact,as ef stands for exit fault,or it could be a faulty pir if that is what is used as a timer trip

gts, August 2010
not enough info mate,there are far to many control panels,you dont say what make you have

gts, August 2010
link Click here to see other fixes for DSC PC1564.