posted on May, 27 2010 @ 03:55 PM
Having worked as an Alarm Installation Technician for 5 years I encountered various strange faults. As Pockets said it could be a problem arising from
the wiring or the battery. Any AC current from mains electric wiring induced into the alarm sensor wiring can cause havoc with the system(this happens
when the mains wiring and alarm wiring run parallel to each other), a way to over come this is to install a AC Spike suppressor which will take the
induced AC voltage to earth and not interfere with the system. The back up battery in an alarm tends to last on average about 5 years, if left
unchecked the battery can dry up and over heat which can cause problems with the main pcb as it can get very very hot in the box and the electronics
don't like lots of heat. To check the health of your battery a simple test is to switch off the mains electric to it and check if it is still
operating, if not then the battery is shot. Another possibility is that the memory is corrupt, the best thing to do, if you have the Installation
manual is to perform a factory reset and start from fresh, though you will have to reprogram the alarm settings and your code.
Hope that helps, if you need any help or more info just let me know.