Ali,
You need to reset your system back to factory settings!
To do this disconnect the mains power, remove your main panel front cover then remove the back up battery.
Reconnect the mains power. Before any sounds are heard from the keypad press RESET.
Once the keypad or panel starts to sound your alarm should be set to factory defaults.
User code 4321
Engineer code 1234
I can send you a user & engineer manual so you can program your system.
E-mail me johnny_two_bob@yahoo.co.uk
Johnny
August 2007