Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4

Measurement:

Outer Case Removal
Undo the 2 screws at the bottom of the case and lift the outer case panel from its securing tabs at the top of the case.
Control Box Cover Removal
Remove the control box cover depressing the 8 retaining catches to disengage the barbs on the control box from the cover.
Remove the cover.