Visonic powermax+ door contact TAMPER OPEN

farazfastian

I've just installed Visonic powermax+ with 3 PIRs and 2 door contacts successfully, it was quite straight forward stuff.
The only thing i couldn't get working is the kitchen door contact, which is saying TAMPER OPEN in the control panel all the time. It was the same which gave me lot of trouble in fitting it as well as my kitchen door is white PVC one and i do think the problem happening because of the same i.e. the door is metal. What i can do to get it installed, as i think majority of the porch, kitchen doors are made of PVC in UK, then how we can get door contact fitted on those, any idea?

Also, when alarm is activated both internal and external siren it takes 4-5 secs to stop when i press disarm on the key-fob, is it normal?

Regards
Faraz