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continuous

  1. S

    Another pump continuously running...

    Hi guys hoping for some advice from the experts before I call someone in. S-plan system, has been working ok for a few years. Grundfos UPS2 Pump gets power via the boiler (Vaillant EcoTec+ 418... about 6 years old). The problem: twice now, the pump got stuck on running continuously. It's not...
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