How do I reset my burglar alarm?

Just a belt and braces check, but make sure that there are no triggered panic alarms that have not been reset (although entering the code should disable it, depending on how it was set up) The most likely scenario is that if it is a hard wired system, the tamper line is triggered somewhere, the fix may be as simple as checking the connection of all wires in all devices, but may require an alarm engineer to trace the fault properly