If this has been a problem from begining check there isn't a small ribbon cable from main shower to front panel not connected, also if air got in pipe shower may have tripped on overheat 'stat in side which sometimes can be reset, it sits on top/near top of copper 'pot'. regards SPARX
(note type of boiler not relevent as shower only has mains cold water supply)
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!