G.C. Number 41 494 39
Prior to Serial No. DLCY 536 0001
Case removal
Slacken the screw 'A' securing the bottom of the outer case and pull off the case. Place the case safely aside to avoid possible damage.
Remove screw 'B' above the boiler thermostat switch, securing the wiring centre and the lower wiring centre.
If a programmer is fitted, unplug the programmer plug from the wiring centre and slide out the programmer. If a programmer is not fitted, slide out the facia panel.
Unscrew the four inner case fixing screws 'C': two at the top; one above the gas valve and; one to the left of the wiring centre, and remove the inner case.