Hi I tried google but no luck.I found this forum when searching seems a good place to ask for help.I have an old boiler which is valliant 242 the green knob for resetting the central heating on or off has broken ond just spins( http://img148.imageshack.us/img148/898/69800999.jpg ) How can I replace this if possible.
Thank you for your help in advance.
Thank you for your help in advance.