He replaced the ln card, and uploaded lonconfig file. under channel B in advanced lon mgr there is no Host_B only LN named Duct_A01,with the lightbulb lit yellowTried to add node but comes up with message duplicate Ln. select continue anyway. Says bind channel. Press bind channel and get binding error. Must have exactly one host per channel. Install new cpu, upload files, and still same problem. Cannot get Any Host_B node. Anyway put all original boards back in,and left car running once again on independant. Its a medical bldg. at least they can still get up and down 😄