Gain access to PCB (use Insulation Mat as required)
G.C. Number 41 108 04
Remove the retaining screw on the right hand side.
Press both catch levers backwards
Lift off the top fixing lugs and slide the case forwards and remove.

Observation:

ATTENTION
Please note this XSol model is only relevant for appliances fitted with the optional integral diverter valve pack.
For further information see section 3.2 Fig 5 and section 4.2.2 in the Manufacturers installation instructions.
If the appliance is installed with conventional external system controls and XSol is used it could lead to a misdiagnosis.