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  1. R

    Grundfos stn pump 3 bar problem

    Ordered capacitor. Same size 12uF. Checked using multimeter, reading approx 11uF. Checked original capacitor, reading approx 6uF. Replaced capacitor. Working great now. Thanks for help.
  2. R

    Grundfos stn pump 3 bar problem

    Thanks. I noted it was s 12uf capacitor. Who would sell these particular types, plumbing shops?
  3. R

    Grundfos stn pump 3 bar problem

    Hi. Had this for 7 years. Worked flawlessly until now. Often when turning hot or cold tap on or shower, the pump will not start, it just buzzes loudly . To get it to work, the power is turned off then on and it works fine then. It is intermittent. Do you think its electrical or pump fault? I...
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