Schneider MPPT 60-150 has output current but input shows as 0A

i have just installed two Schneiders MPPT 60-150 charge controllers, charging a 430AH 48V battery. Thr battery appears to be charging ok but the readings on the charge controller display are not consistent with meter readings taken with a clamp on meter. The input voltage (112v) is recorded correctly by the charge controller, but the current and power are shown as zero, whereas clamp on meter shows ~7A at 112v. The output readings are also inconsistent. The charge controller readings for current and power as half that recorded at the output by the clamp on mete. I am seeing the same thing with both charge controllers. Any ideas what might be causing this anomaly?
Comments
2.1 Kw Suntech 175 mono, Classic 200, Trace SW 4024 ( 15 years old but brand new out of sealed factory box Jan. 2015), Bogart Tri-metric, 700 ah @24 volt AGM battery bank. Plenty of Baja Sea of Cortez sunshine.
Most other controllers have the shunt in the positive circuitry and don't care which negative controller connections are used.
-Bill
You do have the SCP at minimum right? You would need to power it from the AUX output or an external 12V source. This would then make a network and all the settings would be global.
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