problem with DC voltage source

Dear all,
I am a newbie. I am having a problem with my dc voltage source (ED330). I don't why when running my circuit, after sometimes I get the CC alarm LED on in my voltage source. What can be the probable problem here and please suggest me some solutions.

thanks in advance

This LED will light when you draw more current from the power supply than it is adjusted to deliver. Find out what amount of constant current your power supply is set for, and then try to answer the question, "why is my circuit occasionally taking more current than that?"