408 cooling issues

So I finally got my issue resolved. The fan controller is flaking out.... I went with a cheaper one instead of the Dakota digital one that was highly recommended. It doesn't turn the single fan on anymore, however when I give the A/C signal and both fans turn on, if you remove the A/C signal the second fan turns off but the primary fan will stay on. I will be replacing it with a dual relay: primary controlled by the Fitech and secondary controlled by the A/C signal. Thanks for all the advice and help!