Hi there, have the above boiler and over the past few months the hot water has been reduced so that now there is not enough pressure for a shower and water to the taps is slow. I've checked the DHW heat exchanger and that's clean as a whistle. Any ideas please

thanks

robiw, July 2007

Forgot to say that about 2 weeks ago We got full pressure for half an hour o so then reverted back

cheers

robiw, July 2007