I can't figure out why my ATK is not working all of a sudden. I've confirmed that when I manually switch it to "on" that water does flow from the reservoir to the sump. I've also confirmed that the Apex Fusion correctly switches the ATK-L from Closed to Open when the water level falls below the low point. I haven't changed the programming but that should be double checked below as well. Also... I understand most of the programming lines, but could someone explain how the "Defer" lines work?
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