Have a problem with a vista 5 (Scopetronic) When reset the internal sounder goes off and BT on display. Key in the reset code and within a second the internal sounder goes off again. The outside bells and sirens do not. bt is probably bell tamper.

The only way of stopping it is to enter the engineering code. I have no idea what bells are attached. One seems to be an SAB and one a siren, does this make sense. I have opened the panel and all connections are sound.

Is there something I can check. All appreciated.

Tamper to the outside bellbox or the internal sounder - probably the outside bellbox.

Tamper to the outside bellbox or the internal sounder - probably the outside bellbox.

I have put a jumper accross the tamper T3 on the main board but to no avail. What abut the SAB Tamper. This works differently doesnt it.

Eric