B K Precision 8540 electronic load not giving more than 3A

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Hi,
Trying to test a 5V, 3.5A power supply but the eload wont draw more than 3A on CC mode....in spite of the fact that i set it to the 30A range, and set the OCP to 10A as in the manual.
Is there any work-round for this?

I followed the manual to the letter.

https://bkpmedia.s3.amazonaws.com/downloads/manuals/en-us/8540_manual.pdf