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    Can a combi boiler diverter valve leak central heating water into domestic hot water?

    Hi there. [I'm new to combi boiler problems, so I might not be explaining myself correctly.] Over the past three weeks I've started losing central heating pressure. Starting from 2.0 bar, it drops to 0.5 bar over 24 hours. I've checked the radiators and all seems okay. I know that everyone...
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