My burglar alarm will not stop ringing
The calm order of steps that silences a sounding alarm without making the fault worse
Answer first: in almost every case a sounding alarm is silenced by entering a valid user code at the keypad, twice if needed, once to stop the sound and once to clear the alarm memory. If the sound stops and then restarts within a minute or two, the system is still seeing an active detector or a tamper condition somewhere, and that is what has to be found rather than the noise itself.
This is the call we take most often out of hours. The pressure is real, neighbours are at the window, and the temptation is to start pulling wires or cutting power at the fuse board. That usually makes things louder, not quieter, because most panels hold a standby battery and an external sounder with its own back up, so removing mains power can leave the bell box screaming for a long time with no way to stop it from inside.
Below is the order we talk people through on the phone. Everything in it is safe to do from ground level with no tools. If you get to the end and the noise is still going, that is the honest point to hand it over, and we cover call outs across Chatham, Medway, Kent and South East London around the clock.
Signs You Are Looking At This Fault
Alarm sounding now and nothing is stopping it?
Send us the zone name on the display and we will tell you straight away whether it needs an engineer.
Team available now, no call centres, real engineer answers.
The Usual Culprits
Detector still seeing movement or an open contact
The panel will not clear while a zone is genuinely active, so the sound returns each time you silence it until the detector or contact settles or is isolated.
Tamper circuit open
A detector cover, bell box lid or junction box that has been knocked or has worked loose puts the tamper loop into alarm, and tamper often sounds even when the system is unset.
Failing standby battery
A battery near the end of its life can cause odd behaviour under load, including sounder activations and codes that appear to be ignored at the keypad.
Water ingress at the external sounder
Driving rain into an ageing bell box, especially on an exposed gable, corrodes contacts and can drive the sounder without any command from the panel.
Wrong or expired user code
Codes get changed and forgotten, or the code being used belonged to a former occupier or cleaner and has since been deleted, so nothing on screen responds as expected.
Rodent or insect damage to cabling
In lofts and outbuildings we regularly find chewed or nested cable runs, which put zones and tampers into alarm intermittently and unpredictably.
Try These Before You Book Anyone
Enter your full user code once, slowly
Rushed or double pressed digits are a common reason a correct code appears to be rejected. Enter it once, at a steady pace, and wait two or three seconds for the panel to respond.
Enter the same code a second time
Many panels use the first entry to silence and the second to clear the alarm from memory. If the display still shows an alarm after silencing, repeat the code entry before doing anything else.
Read the zone name on the display
Almost every panel names the detector that triggered. Write down that wording exactly. It is the single most useful thing you can give an engineer and it often explains the cause on its own.
Check the obvious door or window in that zone
If the zone names a door, check it is properly shut and latched, not just pushed to. A door that has dropped slightly on its hinges will hold a contact open and keep re-triggering the system.
Leave the mains power alone
Do not switch the alarm off at the fuse board or unplug the panel supply. The standby battery and the bell box back up will keep sounding, and you lose the display that tells you what happened.
Give the external sounder its cut off time
UK systems are normally programmed so the outside sounder times out, commonly after fifteen or twenty minutes, even when the panel is unhappy. If the inside is quiet, that timer is usually running.
Photograph the keypad display
A clear phone photo of the exact display, faults and all, means nothing gets lost in the retelling and lets us arrive with the right parts.
The Point Where It Needs an Engineer
Keeping it from coming back
Two habits stop most repeat call outs: keep a current user code written down somewhere sensible that more than one person can reach, and have the standby battery and external sounder checked as part of an annual service. Batteries do not fail politely, they fail at two in the morning.
Questions We Get Asked About This
My burglar alarm will not stop ringing: common questions
Keep Reading Around the Subject
- What does restore required mean on my alarm panel?
- Video Doorbell Not Working: Fixes That Actually Help
- An honest way to judge repair against replacement without being sold to
- Burglar Alarm Low Battery Warnings Explained
- Pyronix Tamper Fault Won't Clear: What To Try
- Understanding HDD error messages, uninitialised drives and failing storage on your recorder
Need Security or WiFi Help Fast?
Alarm installation, CCTV, access control, WiFi and repairs across Kent & South East London. Free quote in 60 seconds, call, WhatsApp or send a message.