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I'm a bit puzzled. If I haven't had any heating or hot water on why would this overflow problem suddenly happen ? Not sure if it matters but the water coming out of the overflow is cold (and always has been even when i had the hot water on). Since the water cylinder has been replaced the...

There is just one overflow pipe coming from the small expansion tank. Yesterday I emptied water out of the tank so the water level was approx 1.5 inches below the overflow. I had no heating or hot water on and didn't have the emersion on. Within a couple of hours the water level have risen...

Help ! The overflow pipe that runs from the expansion tank in my loft to outside the house is constantly overflowing (2 bucket fulls a day). The float has been replaced twice in the expansion tank AND had the emersion water cylinder replaced as my plumber initially thought the coil may be...