WAG12 Quick Reference for MCB Location and Troubleshooting Directory with Fault code & Action
20 Sep 2026WAG12 Loco Pilot Quick Reference
MCB / circuit breaker locations and IOS fault code troubleshooting, searchable in seconds.
CB reset rule: a tripped CB (switched down) may be reset only once by the Loco Pilot. If it trips again immediately, do not re-cycle it; maintenance is required.
Card colour is a quick visual aid: red = stop / fire / inspect, amber = degraded, isolate or bypass, green = reset or no operational impact. Always follow the full IOS text and IR rules. IOS list is subject to change with software updates.
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