I have a Heatline S24 and I think it has locked out. How can I reset?

The combi-boiler (Heatline S24/S30) locked out because the water pressure had dropped. We've filled the boiler back up but the pilot light won't relight. I think this is because it has locked out but I can't find a sensible suggestion in the intructions as to how to reset it other than turning it off and on again. I can't believe that I have to take both the front and the side panels off just to reset the overheat safety thermostat?! There must be an easier way.

Please help