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  1. D

    grundfos pump

    Thanks, will let it cool down again and see if it works, if not sounds like new pump for me :(
  2. D

    grundfos pump

    tried that and no difference and pump not making noise. this happened earlier today as well and I let everything cool down turned back on and again it worked (pump made humming noise) until everything came up to temperature then stopped (this of course could be a coincidence) but thought worth...
  3. D

    grundfos pump

    Hi I hope someone can help. I have just turned on the heating for the winter and the downstairs rads were not getting hot. I checked online and it suggested turning off the trv on the upstairs rads and turn the pump to max to push water through. This worked and the downstairs rads got...
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