GG asked ... Fix food processor motor?    |    T asked ... How do I turn the delay off on Electrolux DX302 dishwasher?    |    Helen asked ... How can I mend my Kenwood Gourmet FP505?    |    Roy Turner asked ... Kohlangaz Gosford HE fire?    |    Peter asked ... How can I mend a Powerwasher PRO PRO1800PWE?    |    Click here to ask your question

heating but no hot water?

I have a marathon 100b boiler and although I have heating I only have very lukewarm water, even after leaving it on overnight, any thoughts on what might be the problem?
John L, July 2013