Refilling central heating system

[wildchild]

Hi,

I got a combi boiler and i tried to refill the central heating system but the pressure gone up to 3 so i opened the drain cock to lose some water the pressure dropped for a moment but its back up again and now the overflow is dripping.

Any suggestion how can i drop the pressure back and also stop the overflow from dripping.

 

[kevplumb]

make sure the filling loop is closed and disconnect the hose

 

[wildchild]

filling loop is closed. I cant hear it filling either, which i can do when i turn it up.