we had a shower pump fitted about 6 months ago which pumps cold and hot water. it sits on the floor on the same level as the hot water cylinder. whenever we turn on the hot water recently it goes into overdrive and pumps out almost boiling hot water at a low pressure. when we turn on the cold water tap, the cold water completely overrides the hot water. after a few minutes it settles down and works properly but the few minutes is getting longer and longer. can anyone help please?
