S5 GREEN RUN. NO RED, BUT NO GO

Hello, I do some troubleshooting and repair for a few companies that have machines still running S5. Thanks to Classic Automation they are still running.   I have one now that is doing something I that I have not encountered before.   A steady Green run with NO red stop or fault lights. A Steady green Light usually means good to go.  But its no - go.     No Outputs are on at all.   I replaced the Output module that feeds the control-on contactors.   But nothing. It seems like something is halting the code from switching the outputs, but, I thought that if the code was halted or a module was bad I would get a RED Stop LED or flashing fault.  But, what I have is a CPU telling me it’s good to go,  which is totally opposite from the usual unrelenting flashing Red LED of Frustration.