I have a worcester 24i boiler which is only a few years old, the problem is that the hot water will only work when the actual heating is on, wasn't a problem when it started during the winter but now the warmer weather is coming it needs to be fixed.

Steve Moreton, April 2009

Hi Steve

It sounds like you need a new diverter valve diaphram, had exactly the same problem with mine, the part itself is not expensive but unless you are very good at DIY I would recommend getting a plumber in to do it. My guy did it about 40 mins, here's a link if you're brave enough http://www.newtonnet.co.uk/house/boiler/res/blank.html

Pete, April 2009