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  1. G

    Vaillant Ecotec Plus 831 pump replacent

    OK Thanks
  2. G

    Vaillant Ecotec Plus 831 pump replacent

    ok, but read that original pumps failed often (bearings) and that could use Grundfos 15-60 for 831, obviously not correct info. Can I just buy replacement head Thanks Kev
  3. G

    Vaillant Ecotec Plus 831 pump replacent

    read on plumbing forums that Vaillant pumps are crap and to use Grundfos for this boiler, can return it if no good
  4. G

    Vaillant Ecotec Plus 831 pump replacent

    Firstly hello, just joined forums. Have got a Grundfos 15-60 pump to replace vaillant pump (bearings very noisy) but wiring is different, two extra wires to Vaillant, can this pump be used or do I have to use Vaillant. Thanks for any advice Kev
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