how to reset my zones?

i have a securit 700l alarm and while wallpapering around a socket i tripped the electricity and the alarm triggered,ive managed to suss out how to set the alarm using defunct codes but unable to part set my alarm at night,when i try to part set it red light zones 2 lights up and the alarm will trigger when it picks up my movements upstairs,also the internal alarm sounds different too.many thanks