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  1. M

    No Heating but still have Hot Water

    I have a Worcester Bosch Highflow 400 Boiler. On Saturday night my partner topped up the boiler from 0.5 to 1 & since we have had no heating but still have hot water. When I turn the thermostat on it is not calling for the heating - well the demand light doesn't come on. Can anyone advise please...
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