Recent content by Silvanus

  1. S

    Viessmann Vitodens 100 Boiler Not Working - Reset Light

    Many thanks from me too! From reading your guidenotes I've realised that 0.4bar means the water pressure is way too low and then remembered it's ages since I've checked the gauge! Hey presto! - flashing light now magically gone out and boiler boiling away again!
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