Alarm Repair Bromley | Intruder, Fire, Smoke & CO Alarms

Alarm Repair in Bromley

If your alarm is beeping, showing faults, triggering falsely, or has stopped working altogether, we provide alarm repairs in Bromley for all common systems—burglar alarms, fire alarms, smoke/heat alarms, CO alarms, panic alarms, and other security or safety alarms fitted in homes and commercial premises. If you’re planning broader risk reduction alongside repairs, see security upgrades.

Call to book a repair visit.

Alarms we repair

Burglar / intruder alarms: wired and wireless systems, keypads, control panels, sensors, bell boxes
Fire alarm systems: panels, zones, sounders, manual call points, fault conditions
Smoke & heat alarms: mains, battery, and interlinked alarms
Carbon monoxide (CO) alarms: replacement and fault resolution
Panic alarms: fixed or portable triggers and activation faults
Door/gate alarms: contacts, break-glass, vibration and perimeter triggers

Common alarm faults we fix

Alarm keeps going off or triggers randomly (false alarms)
Low battery warnings, constant beeping, or battery not charging
Mains fail / power faults, blown fuses, PSU failures
Tamper faults on keypad, panel, bell box, sensors, or enclosure
Zones showing open, fault, or not ready
Keypad not responding, buttons not working, display issues
Siren/bell box not sounding, strobe not working, or bell box faults
Wireless devices dropping out, weak signal, devices offline
App/remote alerts not working (where the system supports it)
Smoke/heat alarms chirping, false activations, or not interlinking correctly
Fire panel faults (general fault, zone fault, sounder fault, battery fault)

What we repair (attributes and components)

Intruder / burglar alarm components

Control panels: power issues, fault states, programming checks, battery replacement
Keypads: non-responsive keys, display faults, power and wiring issues
Sensors: PIRs, door/window contacts, shock/vibration sensors, glass break sensors
Sounders: internal sounders, external bell boxes, strobes
Power: transformers, PSUs, fused spurs, backup batteries
Wireless: device batteries, signal integrity, supervision faults

Fire alarm components

Fire panels: fault diagnosis, power and battery issues, zone faults
Detectors: smoke/heat detection faults, contamination issues, base connections
Sounders/beacons: activation faults, circuit faults, device faults
Manual call points: activation faults, damaged units, reset issues
Wiring/circuits: loose terminations, damaged cable runs, intermittent faults

Domestic smoke/heat/CO alarms

Mains alarms: power, interlink, and backup battery faults
Battery alarms: chirping, end-of-life alerts, replacements
Interlinked alarms: one alarm triggering others, unreliable linking
CO alarms: replacement and fault checking

Repair scenarios (real-world cases)

Case: Alarm keeps going off at night

Common causes: unstable door contact, PIR sensitivity/placement, low battery, loose wiring, tamper
What we do: isolate the triggering zone, check device health, secure fixings, replace batteries/components, re-test

Case: Constant beeping / “low battery” won’t clear

Common causes: backup battery end-of-life, charger fault, wrong battery type, mains feed issue
What we do: test mains and charging circuit, replace battery, confirm the system returns to normal state

Case: “Tamper” fault on keypad or bell box

Common causes: cover not seated, failed tamper switch, damaged housing, wiring strain
What we do: secure the enclosure, repair/replace tamper parts where needed, confirm stable fault-free operation

Case: Fire alarm panel showing faults

Common causes: battery fault, power supply issues, detector/sounder circuit fault, device failure, wiring issue
What we do: identify the fault source by circuit/device, restore power integrity, replace failed components, run functional checks

Case: Smoke alarms chirping or triggering falsely

Common causes: end-of-life unit, battery issue, contamination (dust/steam), poor positioning, interlink problems
What we do: confirm alarm type and age, replace where required, correct power/battery issues, verify interlink behaviour

Case: Wireless sensors dropping offline

Common causes: low batteries, signal interference, range issues, device faults
What we do: replace batteries, improve device positioning where possible, confirm supervision signals and stability

Our alarm repair process

1) Diagnose: identify the exact fault, affected devices, and root cause
2) Repair options: repair, replace components, or stabilise with an upgrade where needed
3) Fix and test: confirm correct operation, reduce false alarms, and verify alerts/outputs where applicable
4) Handover: show you what was fixed and how to prevent repeat faults

Frequently asked questions

Do you repair alarms you didn’t install?

Yes. We repair many existing alarm systems and can advise if parts are obsolete and the best replacement route.

Can you stop repeated false alarms?

In most cases, yes—false alarms are usually caused by a single device, power/battery instability, poor connections, or setup issues. We find the trigger and fix the cause.

Can you repair both security and safety alarms at the same property?

Yes. If you have an intruder alarm, smoke/heat alarms, and other alarm devices on site, we can diagnose and repair the full setup.

Book alarm repairs in Bromley

From burglar alarm faults to smoke alarm beeping and fire alarm panel issues, we’ll get your system working reliably again.