Well really the problem is either the cable/hook door restrictor and/or a hung ECI doorlock but I'm loosing TDC boards on a job we recently upgraded the door operators. There is no internal protection for an open time on the TDC. Was thinking of adding an timer for this in the Open coil circuit to interrupt the feed if DOL doesn't change states in say 8 seconds. Anyone else had any issues with this? I know once we get the bugs worked out on the locks and restrictors I should be better off but for now, it's been a big headache.