- Joined
- 6 Jan 2018
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- 12
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Hi, the ball cock on my cold water header tank on my s plan heating system is continually adding water to the tank yet there are no taps on and no signs of a leak. The hot water is fully pumped by the way. I don’t know if this is related but the header tank for the heating system has warm water in it. Has anyone any ideas where I should be looking. It is a large extended house. Could it be anything other than a leak on the hot water system. Thanks , PS nether of the overflows are running.