Holiday Mode

Discussion in 'Plumbing and Central Heating' started by Rekusu, 14 Jan 2012.

  1. Rekusu

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    Hi there,

    I have a Viessmann 200 WB(something) boiler that has weather comp and a selection of buttons that includes Holiday mode.

    Can set the departure and return dates and the boiler will not heat the DHW but will operate the UFH at the set reduced temp.

    We are going away next week, so during an idle moment, I set the departure / return dates and a reduced temp of 15C.

    This morning, it was freezing outside and the boiler did not appear to be running. The house is nice and warm so I figured that the WC plus set room temp meant that it did not need to come on.

    There is a Info button on the panel, which when pressed, usually displays the outside (WC) temp. When pressing this, all that was displayed was 'Holiday Mode.' No temp. Does not make sense as the departure date is not for another week. However, when I canceled 'Holiday Mode' the boiler fired up.

    So to my question; in setting holiday mode for a future date with a reduced room temp. surely it should not operate now, which is what seems to have happened this morning? Or am I doing something wrong?

    Grateful for any suggestions.

    Thanks

    Rex
     

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