hey I m not technical with plumbing at all but will try my best. I have had a new power shower fitted ( thermostatic) but the water coming out is freezing. The pressure is pretty good. The water out of the taps is pipping hot. I thought it was to do with the boiler not kicking in beacuse the pressure is low. So i v tried turing the tap on in the sink but that only helps a small amount. Is there any program setting on the boiler I can change? I dont want to make my shower a mixer shower seems a waste of a nice new shower. Any ideas would be appreciated thank you.