I have a Eurosec CP8 panel with Novagard Nova 4 bell box. I thought that the system was disabled but with the bell box LEDs flashing, as a deterrent. The last alarm technician to visit left the control panel disconnected. Since I am having some doors replaced I thought that now was a good time to check how the sensors are connected. Disconnecting the zone contacts a pair at a time, all went well until I got to what I imagine are the contacts for the panic button. The bell box activated and I had little option but to let it timeout. Unfortunately the strobe is still flashing. How can I stop this?