I have an open vented system and recently noticed that water was coming out of the overflow from the expansion tank in the loft. Having checked the tank, the water level was above the ball cock and so thinking the ball valve was the problem, I replaced it. However, the problem is still there, although it is not apparent where the water is coming from. The water is fairly clean and cold.
Having read other posts, is would seem that this may be related to the heating coil in the hot water tank.
I would be grateful for any advise on this and if there anything I can do to establish whats causing this problem ?
Having read other posts, is would seem that this may be related to the heating coil in the hot water tank.
I would be grateful for any advise on this and if there anything I can do to establish whats causing this problem ?