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831

  1. johnsco

    Plumbing question vaillant eco-tec plus 831 combi boiler

    We use the above for our central heating and hot water. It's never given a moment of trouble, and I don't want to spoil the trend. Like half of the country, we've just experienced a freeze-up and burst to an outside pipe. It only supplies the outside tap at the back of the house, so I've done...
  2. bpsorrel

    Code 831

    Does anyone know what "Interior code 831" means? I found it on my S211 invoice but with no description. I'm hoping that it doesn't mean Artico leather.. :(
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