Fault Finding
Rapid response fault diagnosis on PA, voice alarm and intercom systems — from any manufacturer, including legacy and discontinued platforms. Specialist test equipment, deep system knowledge, and a structured diagnostic methodology to find the root cause fast.
Whether the fault is a single zone reporting a wiring fault or an entire control rack offline, our engineers have the experience to identify the root cause, propose a permanent fix, and (where required) provide an immediate workaround to keep the building protected.
What We Diagnose
Short circuits, open circuits, earth faults, impedance mismatches and end-of-line failures — located to the metre using time-domain reflectometry where required.
Power-supply faults, channel failures, configuration corruption, firmware mismatches, and hardware failures within VACIE racks.
Areas where STI has fallen below the BS 5839-8 target — investigation of EQ, zone overlap, ambient noise, loudspeaker positioning and tap settings.
Audio dropout, paging-call setup failures, registration loss, latency, and bandwidth contention on IP-based PA platforms. Wireshark trace analysis where needed.
Failed standby capacity tests, charger faults, end-of-life battery banks — diagnosed and replaced with EN 54-4 compliant alternatives.
Misrouted cause-and-effect, fire-alarm interface failures, BMS integration issues, and intermittent device behaviour — reproduced, diagnosed, and resolved.
Diagnostic Methodology
Phone or remote-link triage with the building’s on-site contact — capturing fault symptoms, recent events, and any panel indications.
On-site engineer with calibrated test equipment — logical fault isolation through the signal chain, with records of every measurement.
Confirmed root cause with evidence — not just a symptom workaround. If the fault is intermittent, monitoring left in place to capture the next occurrence.
Permanent repair, full functional re-test of the affected zone, and an updated commissioning entry in the system log book.