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  1. 1

    Indian Sandstone "loose flags"

    Hi, I had an Indian Sandstone patio laid at the start of the year but at the time the weather turned and frost / rain spoilt the pointing. We have raked and cleaned out all of the pointing which was very sandy but noticed that about a third of the flags can be easily lifted from their...
  2. 1

    Any ideas? Combi tries to supply DHW after a CW demand

    Hi, I posted here a few weeks ago, but unfortunately still have the same and ongoing problem. We recently installed a Vaillant 838 combi to replace an aged Gloworm. When almost any appliance / tap or toilet in the house ceases to uses cold water the boiler fires for about 10 seconds to...
  3. 1

    Vaillant 838 wants to supply DHW during a cold water demand

    Firstly many thanks to those who may be able to offer comment and my apologies in advance as a newcomer here, I am not a heating engineer but have tried to detail my experience as best as possible. I have a recently installed Vaillant Exclusive 838. I am generally very happy with the...
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