I know what the dots mean and i know that is normal, but I have a manual and the way I read it when there is no trailer the NC should only light if I slide the manual brake control. Mine was showing NC all the time after I disconnected my trailer. And it did not turn off after more than 30min of sitting.
I pulled the fuse and put it back in and for now it is working right. I will see tomorrow after towing the trailer home if I start having the constant NC lit again.
I was hoping someone with this controller could tell me how their units acts.