Does the lead you have plugged into the Pump Header have a tacho wire (usually blue)? If it does, then you should be able to read RMP in the BIOS and if it's displaying in the BIOS it should then show in AI Suite. If you have a Tacho wire and still get no reading then you could try testing it in one of the Chassis Fan headers. You need to determine first that it is connected correctly, then if it is the pump at fault or the motherboard header.