The pressure on our Worcester 28CDi has dropped to zero. I know I have to top up the water but am not sure how to do it. The taps are not obvious to me
have you got the filling key.
you need to remove the panel under the boiler so you put the
filling key in and turn it to lock the key in place.
there should be a grey knob turn it anti-clockwise this will
let water into your heating system