I've just drained my central heating system to move a couple of radiators. All went well, but now I've re-opened the cold water inlet on the boiler, nothing is happening. Have checked the cold water valve itself, and that is fine, all open. But not a drop of water is going into the combi. Is it something simple, or do you think that something has 'jammed' and that I have to get an engineer in.
Thanks.
Thanks.