Home alarm system?

Can some one please help? Accenta G3 panel. Alarm kept on going off for no reason. Pressed the user code many times and it stopped but the tamper light stayed on. Pressed the engr.code Disconnected the power and replaced the battery and also the 1A bell and strobe fuse. Switched the power back on. Now the keypad keeps on flashing and vibrating noise keeps on coming. and key pad is locked