My myson orion wont work aaaghh! The contron panel is upstairs, the boiler is downstairs, the pilot light is lit, the control panel lights up fine and when you switch it on it makes a noise like its firing up but the radiators are not getting warm and the water is staying cold. The heating only used to work when the water was on but now neither work and I cant see why not. Could it just something simple? 
