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?
Anyone have any ideas?