bath mixer

Hi there I moved into a flat recently which uses a HIU for hot water and heating. I found that in the bathroom there is only luke warm water coming from the basin mixer tap and the thermostatic shower mixer. The kitchen is fine however so that tells me the HIU and water coming out is fine as...

Hi, hoping someone can make sense of my problem and point me in the right direction. The hot tap flow on my bath mixer increases if I turn on the bathroom sink hot water tap, close the sink tap and flow decreases again. The bath tap supply comes straight from the combi boiler and the sink taps...