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    Vaillant Ecotec Pro 831 Hot water problem

    gas4you, Thanks, I will check out the S codes on my next visit. Gastite.
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    Vaillant Ecotec Pro 831 Hot water problem

    Mickyg & Agile, Thanks for advice, I am in the process of registering on CC, I will repost in CC when my CORGI has been confirmed. Gastite.
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    Vaillant Ecotec Pro 831 Hot water problem

    Engineer.
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    Vaillant Ecotec Pro 831 Hot water problem

    Could any of the Vaillant experts help with this problem please. Ecotec 831 Hot water change over valve replaced ( previous one leaking from spindle), also replaced the plug in water sensor. The new valve doesn't operate, the actuator shaft doesn't appear to move whether demand is...
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    Halstead ace 3yr old

    The boiler should be displaying a fault code, failing that the gas supply pipe to the boiler could be incorrectly sized.
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    cost of quote for replace of old radiators for newer ones li

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