Geothermal flow pump electrical dilemma

Discussion in 'Solar and Geothermal Water Heating Forum' started by brendams, Dec 20, 2017.

  1. brendams

    brendams New Member

    Joined:
    Dec 20, 2017
    Location:
    Maryland
    I have a Water furnace geothermal system put in about 14 yrs ago. One of my 1/2 hp circulating pumps (240V, single speed) had to be replaced, so I ordered a new one, tested it on a 240VAC circuit (it works fine on it), but when I connect it to the flow center, it doesn't work. It gets 240VAC, but does not make the pump spin. Again, pump works fine when wired to a 240VAC line, but not to the line that runs from the geothermal unit which also delivers 240VAC. I did it multiple times (making sure it was lubed with water so I didn't burn it up).

    Anyone have any ideas?
     
  2. valveman

    valveman Cary Austin Staff Member

    Joined:
    Mar 15, 2006
    Occupation:
    Pump Controls Technician
    Location:
    Lubbock, Texas
    240V is 240V no matter where you get it. Not the same power if it works on one and not the other. You give it 240V and it will run. You can check the amps to verify if it is running or not.
     
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