Thank you, very much for fast reply, just before you answered I just turned the handle and it seemed to work as the pressure went up and I made sure it's closed the hot water is back, once again thank you for quick response.
Hi, I'm new to this website, I have a question, could someone tell me which two or one of these I should be turning to apply the pressure for the boiler as it currently stands on 0, and rather than getting engineer again out I'd like to see if there is anyway I could do it on my own, thanks.