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    Plz help Boiler & UFH pump not switching off - timer off

    Hi all I have a Vaillant Ecotec 624 System boiler with uniSTOR 210L cylinder. also have a 3 channel hortsmann programmer which controls: a- Hot Water b- Heating Zone 1 - Radiators downstairs c- Heating Zone 2 - Radiators upstairs (both radiator zone are controlled via 2 separate...
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