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  1. Peter Lee

    Grundfos Alpha pump electrical load

    The pump in my system is behaving strangely. Normally it indicates that it is running at about 43W. Since Xmas morning, it has only been at about 18W. When it starts up, it goes up to 45 for a few seconds and then back down 3 or 4 times. Added to this, it worked perfectly for a time yesterday...
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