I have a Worcester 42 Cdi boiler. I noticed the pressure had dropped so needed to fill the system. I put the key in and turned it. I then turned the white square valve but the water started streaming out from the key. I had to turn the valve off. The pressue is still low. Any ideas?

Brian, December 2011

As coming out at the key, that is probably why it was low to start with, that part leaking, usually needs replacing

SD, December 2011