The reason why your alarm wont set is because u have an open curcuit on a zone.
when u set the alarm a red light will show on the panel or key pad indicating a zone number or tamper which wont go out!
maybe a magnet missing from a door, faulty pir or a tamper fault.
If so consult an alarm engineer
Mr David Graham Deakin
July 2007
It sounds like your battery in the control unit needs changing. It wont be expensive (circa £30) and you can change it yourself.
Nick
July 2007
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