Our Worcester 24cdi was not used for about 3 weeks while we were away. Now the hot water doesn't get as hot as it used to on the same setting, I can increase the temperature by turning the "tap" dial on the front. But this shouldn't be necessary! What could be wrong, perhaps somethings got stuck or needs cleaning, does the pressure gauge for the radiator circuit have any influence, what pressure should it be at when there is no load on the circuit? Do you top it up when it is unload or idle? Any advice appreciated, thanks. Simon.

Simon, October 2006

the water should rise by aprox 35 deg c it is now colder so prehaps the water is coming in to the house a little colder 1 .5 bar is enough pressure it as no effect on h/w temp but will cut off if to low turn water pressure down at main to raise temp

paul, October 2006