Thank you for your reply. I've had a little time since my post to think some more and research.
I have an LEV200A5NAA. It says it is a 24V coil, but looking at the manual for the Curtis, the KSI and the coil return is Max(108)V +10V. Maybe the controller can't open the coil anymore after some age/oxidation? It is possible that I had the coil return on the wrong side of the contactor coil. The manual says it should be on the positive side of the contactor however, it was working for a short time for some test runs and then stopped after I let my pack sit for balancing.
On my previous build (where I harvested all my parts), I had a regular relay rated for 240Vac for the KSI. This time around, I was using a SSR DC-DC and tried to use the BMS relay control for charge and discharge with a 12V from the key switch, but I kept getting the error 39 from my controller. It would work when I just grounded my SSR rather than use the sink in the BMS.
So here is a follow up question to my original problem. Which way should the current flow through the contactor? I had it connected going from the battery+ to +A1 to -A2 to B+1238. Then the coil return was connected on the -A2 (coil control) side of the contactor.
I can't remember how it was on my previous build.