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Hope someone can give me some advice on a couple of problems I have with my heating / hot water system. I have an un-vented system with a megaflo in my flat. It was installed new ten years ago when the flats were built. 1) Hot Water Pump Keeps Running This winter, when I have the heating...

Hi Hope someone can help. My Heatrae Sandia Megaflow Cylinder has developed a bit of a problem. The pressure gauge is showing max pressure and the cylinder makes a dull thumping noise every 10/20 seconds. The problem began a few weeks ago. To start with, heating the water would cause the...