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not sure if anyone has ever experienced this before or not? I went in my loft tonight to fit a jacket to the cold water tank that feeds my hot water cylinder and to my amazement, there was steam coming from the tank! I checked the water in the tank and it was quite warm, almost getting towards...

Last winter my siemans programmer stopped working, I bought a replacement RWB9.cw and wired up exactly as instructions and everything worked fine until summer (but as my heating was always on, no suprise as hot water came on with heating). With the arrival of summer and no requirement for...