I have a Accenta 8 home alarm system and whenever I fully arm the system I have 30seconds to leave the house, which is fine. But when I enter the house again the Bell sounds (alarms) as soon as I open the front door.
Can you advise what I can I do?
I have fitted new battery and reset the system.

Premji Parbat kerai, November 2009

very doubtful nick, if it had failed it would be open circuit and not set. its programmed as an instant alarm on entry is my guess

warren W J Electrical Jones, November 2009

I imagine your front door contact needs replacing, your pir in your hall is programmed as entry route, and because your door contact has failed its going straight into alarm.
Regards
Nick 07842 480037

Nick, November 2009