Hi. Recently I install a pre used DSC 1555 alarm system in my house. When I finish to install all the wiring and devices, I connect the AC to the alarm and a few red lights turn on, on the lcd keypad. I check in the installation manual, and says that this's for clock and a little more things. The problem is that when I go to enter the code that says in the cabinet the keypad do nothing. I enter *8 1234 and only make a beep for two seconds and nothing. I thinks that maybe I'm entering the wrong number, so , please, if anyone know a way to reset all the alarm system please let me know.
Thanks.

 

1234 is the default master arming code. The _installer_ code default is 5555. If that doesn't work, then you will need to do a hardware default of the system.

This is all assuming that you do have a copy of the installation manual.

 

1234 is the master code. If all you need to do is change set the clock you can use this code. *6 1234 HHMM DD MM YY#

To program the system you need to use the install code which may be 5555 depending on the version of software that is on your system.