Guides & technical articles
Fault diagnosis walkthroughs, UK standards explained, and practical advice for engineers at every stage — from apprentice to commissioning.
Showing 19–36 of 294 matching articles
Diagnosing Loop Isolator Faults on an Addressable Fire Alarm System
How to diagnose a fire alarm loop isolator that isolates too much, fails to isolate at all, or is itself reported faulty — for UK engineers.
Diagnosing Repeater and Mimic Panel Faults on a Fire Alarm System
How to diagnose a fire alarm repeater panel showing the wrong status, frozen on old data, or that has lost communication with the main panel — for UK engineers.
Diagnosing Visual Alarm Device (VAD) Faults on a Fire Alarm System
How to diagnose a fire alarm visual alarm device fault — circuit fault, device fault, and the synchronisation fault that is a safety issue — for UK engineers.
Diagnosing Faults on a Conventional Fire Alarm Zone Circuit
How to diagnose an open circuit, short circuit or earth fault on a conventional fire alarm zone — end-of-line logic, segment isolation and a safe workflow for UK engineers.
Detector Base Faults: Telling the Base from the Head
How to tell a detector base fault from a head fault using the swap test, base continuity checks and a safe workflow — for UK fire alarm engineers.
Diagnosing Manual Call Point Faults and False Operation
How to diagnose a manual call point fault or investigate a false operation — the swap test, wiring checks and a safe workflow for UK fire alarm engineers.
Diagnosing Relay and Output Circuit Faults on a Fire Alarm System
How to diagnose a fire alarm relay or output circuit fault, including the silent failure risk where the panel shows healthy but the plant doesn't respond — for UK engineers.
Clamp Meter Current Measurement on Fire Alarm Systems
Using a clamp meter to measure quiescent and alarm current draw on fire alarm power supplies and circuits without breaking into live wiring, and what an unexpected reading means.
Insulation Resistance Testing for Fire Alarm Cabling
How and when to insulation-test fire alarm cabling, why electronics must be disconnected first, and how to interpret a megohmmeter reading without over- or under-reacting to it.
Using a Multimeter for Fire Alarm Fault-Finding
How to use a digital multimeter to trace opens, shorts and high-resistance faults on fire alarm circuits — safe technique, what each reading means, and where it falls short.
Thermal Imaging for Fire Alarm Fault-Finding
Using a thermal imaging camera to spot high-resistance connections, PSU stress and overheating cable as an indicative screening tool alongside, not instead of, electrical testing.
Diagnosing Battery and Charger Faults on a Fire Alarm System
How to diagnose a fire alarm Battery Fault or Charger Fault — the difference between them, common causes, load testing and a safe workflow — for UK engineers.
Chasing Intermittent and Nuisance Faults on a Fire Alarm System
How to diagnose an intermittent fire alarm fault that has cleared by the time you arrive — provoking techniques, log correlation and a systematic approach.
Diagnosing Fire Alarm Network and Inter-Panel Communication Faults
How to diagnose a Network Fault or comms fault between networked fire alarm panels — common causes, termination and addressing checks, and a safe isolation workflow.
Fault-Finding a Fire Alarm Sounder Circuit That Won't Sound
How to diagnose a fire alarm sounder circuit that reports a fault or won't sound on test — end-of-line checks, wiring faults, load issues and a safe workflow.
ESSER FlexES Control Fault Finding Guide for Engineers
Fault finding on ESSER FlexES Control panels, including sites where it sits alongside or replaces an older IQ8Control installation.
Fike Fault Finding Guide for Engineers
Fault finding across Fike's Cheetah Xi, Duonet and Twinflex ranges — identifying the architecture, reading the panel, and a safe diagnostic approach.
BAFE SP203-1 Explained: What the Scheme Actually Certifies
What the BAFE SP203-1 scheme actually certifies, its four modules, how it is audited, and how it relates to BS 5839-1 — for UK fire alarm engineers.
Put knowledge into practice on site
Use source-verified records, official manufacturer links and evidence-led AI support alongside the reviewed guidance in this library.