C-Bus 12-Channel Relay Replacement
Kebia Importex, Ingleburn

The Problem: Lights Down in the Warehouse

Kebia Importex's warehouse in Ingleburn runs C-Bus lighting control across its operational floor space. When a section of the warehouse lighting went down — switches unresponsive, circuits dark — the call came in for a same-day fault finding visit.

In an industrial environment, lighting downtime is more than inconvenient. It creates safety issues, disrupts operations, and raises compliance questions. The client needed a fast, accurate diagnosis — not speculation.

The Diagnosis: Internal PSU Failure — 12-Channel Relay

On-site fault finding with the C-Bus toolkit pointed straight to the problem: internal power supply failure inside a single 12-channel relay module. The unit was still drawing power and visible on the network, but had failed internally — it could no longer reliably switch its output circuits or respond to commands.

This kind of failure is easy to misread without the right diagnostic equipment. The relay looks like it's working — it's present, it's powered — but the PSU has degraded past the point where it can drive the output under any real load. The result is a zone that behaves unpredictably before going dark entirely.

At Kebia, the fault had progressed to full zone failure by the time the call came in. The affected circuit was completely unresponsive — no switching, no network acknowledgement under load. With the fault isolated to a single 12-channel relay, the path to resolution was clean and straightforward.

• Relay present on the C-Bus network but unable to switch outputs reliably
• Affected zone switches completely unresponsive
• No load-bearing output — full circuit dark
• Fault isolated to the relay hardware, not the cabling or programming

The Fix: Relay Out, New Unit In, Zone Verified

The faulty 12-channel relay was pulled and replaced with a compatible modern unit. Once the new hardware was seated, it was configured on the C-Bus network, all 12 output channels were commissioned and tested under load, and the full zone was walked through to confirm everything was responding correctly before sign-off.

One visit. Fault found, hardware replaced, system verified. No parts ordered and waited on, no follow-up call required — the relay was on hand and the job was closed out in a single engagement.

On-Site Photo Record

C-Bus relay fault in your warehouse or factory?

George services commercial and industrial sites across Greater Sydney including the South-West, Ingleburn, Campbelltown and beyond — same-day fault finding with relay stock on hand.