How can I reset my Eurosec CP8L LCD alarm?

I have a Eurosec CP8L LCD house alarm. My screen is currently showing 'Unset' after we had a few issues with it. How do we get it back to normal again?
Technophobe2010, March 2010


done
they all say unset when not armed

dar, May 2010
link Click here to see other fixes for EuroSec CP8L.