there are two molex pins on the pc to reset panel back to the default codes,but if you do this you will need to reprog the panel,they are marked rst.they are near the large micro chip,power down thje panel,mains and battery,place a blade of the screw driver across the pins,apply battery power,then mains,,,the system will now load the factory default codes,remove the screwdriver blade,key in 1234,close panel,key in 1234,then key in 0 enter,7890,you are now in engineering prog,when your finshed programming,key in 99 enter,
gts, November 2010