A points failure is a more specific failure of the signal system, if the points suffer a fault like moving but the locking system not verifying the points are locked in a correct position the signals won't change, equally a failure of the wiring or a relay could mean the points don't move
Don't worry its all fail safe so cutting a wire will result in the system falling to a safe condition
Most likely issue is a failure of the points just south of Pearse station
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