Ron, I am assuming that the scv's are working normally when worked normally? If so, then the only solution I can find is that there is a 30 second time limit to program your functions into IMS system. Are you entering multiple functions and scv is last in sequence? If you are programming within 30 seconds and you are not getting error codes, then I would suspect software problem. You may need to replace the controller. 10 series controllers were not reprogrammable.