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    Grundfos Alpha+ pump running continuously

    Great, I’ll give that a try next thanks! I’m not sure if this helps at all, but I’ve had everything turned off most of the day and before turning everything back on to get some heat in the rads I turned down the thermostat on the hot water tank to its minimum at 25C (it clicked below 45-50). As...
  2. S

    Grundfos Alpha+ pump running continuously

    Sorry for the slow reply, the heating system isn’t the only thing that’s packed in today. Yes I have access to a multimeter and can use to troubleshoot.
  3. S

    Grundfos Alpha+ pump running continuously

    Thanks, is it possible to check the micro-switch easily or best left to someone qualified?
  4. S

    Grundfos Alpha+ pump running continuously

    Hi, it’s an Ideal Icos HE12 boiler.
  5. S

    Grundfos Alpha+ pump running continuously

    I’m currently experiencing an issue with a Grundfos Alpha+ pump running continuously in my unvented heating system and would appreciate any advice. It continues to run when both the heating and hot water are turned off. When there is demand, the radiators do get hot as expected. Both zone valves...
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