There is hot water coming out of the overflow pipe from the cold water cistern that feeds the hot water. it is not coming from the vent pipe or from the ball valve so I assume it is coming back up through the cold feed??
i can try draw the system but there are 2 cylinders 3 cisterns and a f+e so it could take some time.
thanks for any help
i can try draw the system but there are 2 cylinders 3 cisterns and a f+e so it could take some time.
thanks for any help