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Contactor chattering would be cuased by a low voltage situation. Monitor the voltage,at the contactor coil terminals,and see if you are losing positive(+) or negative(-) voltage. Then trace that circuit back to what controls it.
I should clarify. The pump contactor is cycling in and out. Could this be a pressure switch or were you thinking the pump was running all the time?
No we have not. We will look into this possibility. Thanks
Hi Terry. Have you tested the relief pressure setting? Possible bad pump.
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