Hi all,
I had this error with our IRC5 too. The error message says it can be caused by a configuration error, so I booted into a different known good system, and the problem went away. I rebooted into the first system again, and the error didn’t come back. The weird thing is that I had tried a warm restart with no luck, but rebooting the same system, with the same configuration, made the error go away. Still not sure what happened.
Anyway, I thought it might be helpful for others with this error to know that it may not be the contactor itself. I’m writing it off as just another glitch for now, but I’ll update my post if it turns out to be a hardware issue after all.