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worcester 230 combi rsf problem?

Hi ,I have a problem with my boiler where the central heating is fine and works like clockwork, but I only seem to get luke warm water to the shower,bath etc, and only when the heating is on.Could this be a 'Heat Exchanger' problem??
Any help would be much appreciated.
wayne, March 2010
you probably need a new diaphragm in the diverter valve

Ian, March 2010
link Click here to see other fixes for Worcester 230 combi rsf.