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  1. C

    Overflowing expansion tank

    forgive me, not sure I understand. The float valve is not leaking and overflowing. hot water is coming up from the hot water cylinder (i can see it when i shine a torch on the water at the bottom of the f & e tank) and making the water level increase when the heating is on.
  2. C

    Overflowing expansion tank

    Have had a large damp patch on the outside wall (causing damp inside) for a couple of months and have just worked out where it was coming from ( after a false alarm when i found that the bathroom tap was also leaking down the pipe onto the wall). Even though I have never seen it, the overflow...
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