Is it counting. Do the LR relays count. May have a dz sensor bad. Does it have BCO and TCO relays. They are switches on the limit trees. They have to make up at terminal floors also. If it's making and breaking it will turn around and do a correction run constantly.

Last edited by Magic smoke; 02/09/16 03:47 AM.

When every circuit board is made. They put a little magic smoke inside.