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Vaillant VRC 470F Controller + VR 21 - DCF77 or not?

Discussion in 'Plumbing and Central Heating' started by Harry Bloomfield, 12 Apr 2019.

  1. Harry Bloomfield

    Harry Bloomfield

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    I have had the above full kit installed for a while now and there is mention of the VR21 outdoor sensor unit including the facility to receive time/date from DCF77 in Hamburg. I have seen nothing on the display which suggests it is receiving from DCF77, nor did it move its time by one hour when we went to BST, though I have it set to self adjust.

    It did seem to move the clock back an hour around two weeks before it was due.

    So how can I be sure it should or should not receive DCF77? The handbook gives no clues at all.
     
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