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  1. R

    Can water travel back from hot water tank into cold tank?

    Thanks for that. I don't think it can be 1) as nothing's been changed to make the water heat any more than it was (unless I suppose the thermostat's gone wrong). I don't think it's 3) either as the water level in the header tank seems fine & nowhere near the level of the F&E tank, and the...
  2. R

    Can water travel back from hot water tank into cold tank?

    Hi I woke up this morning to find my overflow leaking from my cold water tank (after the hot waater had come for the morning). I've adjusted the ball valve & it's stopped but I've got a lingering doubt. At the bottom of the cold water tank there's an outlet down into the hot tank in the...
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