Hi,

Just wondering if anyone can assist.

I have just installed a Scantronic 9800+ control panel in my house, replacing an old Regalsafe RS55. I have reused all the PIRs and the bell box. Everything works fine except that the when the alarm is triggered, the strobe activates but the external alarm bell doesn't sound. However if I triggeer one of the tamper switches the bell DOES sound. Any ideas? The conections are as follows:

Regalsafe (old alarm) How it was wired on old panel

White -Ve For Strobe

Black -Ve Hold Off

Yellow -Ve Tamper Return

No connection -Ve To Ring Bell

Red/Green +Ve Hold OFF

Scantronic (new Alarm) This is how I

it looks like the bell trigger has been dissed in the panel on the old rs panel as there should have been a connection to the -VE to ring bell, so you have probably got a wire dangling in the panel on the same cable as the other colour cores that is the trigger wire it is probably the blue wire looking at the colours used but don't quote me on that.

Firstly, there`s a lot of installers which actually wire the tamper feed and tamper return the wrong way around, as seems to be the case here, this method of wiring the bellbox is prefered by most installers as it causes the hold- to be removed when the bellbox lid is removed, so causing the bells to sound and also create a tamper fault at the panel.

Green = Strobe +

Red = Hold +

White = Strobe -

Yellow = Actually your Hold -

Black = Actually your Tamper Return.

If the old panel had nothing connected to Sw -Ve To Ring the Bell then i fail to seee how it ever worked at all.

the old panel wasnt programmed to drop the 0v in alarm was it?

some panels have the facility to invert the bell trigger but you usually wire the 0v into the bell trigger terminal so in alarm it drops the 0v and self activates.