Not Lumo but Two-Mo Class 222 Double Sets at Crewe 25/8/26

Surprise at Crewe this morning (25/8/26) with Lumo doing a unit swap on the Preston to London Euston service. Class 222603 terminated at Crewe from Preston with 222602 ready and waiting to continue the journey to London. Not sure what the reason was for the swap. Presume a fault on 232603? Passengers and onboard staff (excluding driver) transferred to 222602.