I have a Boilermate II & Potterton Suprima 40 set up. The Suprima is set to max and there are 2 lights, the one at the top is constant red/orange, the other is unlit. The BoilerMate store temp controller is set to max, the radiators work fine and are time controlled. I turned the Brawa mix valve head to max but there's not enough hot water to have a shower or bath. I also noticed when i turned this valve to max, I saw a drip of water from the valve underneath. Does anyone have any ideas before I call an engineer. I've lived in my house for 9 months and didn't notice a problem in the summer. I don't know anything about this topic so I might be missing something obvious !