Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4

Case removal
1. Remove the outer case lower door panel by following the sequence of diagrams.
2. Remove the outer case from the boiler by unscrewing the two screws and lift the base clear.
Draw the outer case clear of the boiler.
3. Release the four latches holding the combustion box door by pulling forward from the bottom and unhooking its top edge.