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Thanks Gasguru , I will have to get somebody in to check it .

Thanks for the reply,yes the water returns to it's normal temperature after a initial blast of scalding waterwich is only for a few seconds ( but you know about it ) the central heating is on 4 and the hot water is on Eco ,and it happens if the heating is on or off .

Thanks Ian I will give it a try and report on it .

Hi , All it says on the front is Greenstar 30 CDi if that makes any sense to you ,Thanks.

Hi all , Bit of advice needed we have a Worcester Bosch greenstar 30 installed in 2007 and to date has never given us any problems,however I have recently noticed that when I want hot water it out scaldingly hot then cools down ,I got a local engineer out he tells me that they are...