I am currently extending my bathroom and have had a plumber in to remove the old radiator and fit all the new piping. The problem i have is that since everything was reconnected my combi boiler (camray 5) is isnt playing ball, when i switch the heating on the hot water comes on aswell although it is in the off position, i have to move the switch on the electric flow valve to get the water flowing through the system but it doesnt reach the two rads upstairs and the most alarming thing is the system pressure is set to 1.5 bar but will climb to over 3 bar which it never used to do and i have to switch it off, im hoping someone can help b4 i call in an engineer.