I have a Worchester Greenstar 30si boiler. I am trying to re-pressurize it: I have put in the charging key, turned it to the locked position and turned the adjacent water valve. No water appears to be going in as there is no rise in pressure or sound of water entering the system.

Without the key inserted, water comes out when the valve is turned so water is present.

Any help would be appreciated.

Did you try venting your system? Try that after you engage and turn your key. See if that helps and let me know.

Thank you for your reply. I have vented the radiators and some air was released. When I tried to re-pressurize the boiler, it sounded like some water was going in initially and then it stopped.