I believe the Sears/Craftsman 139.539... model openers use DIP switches to set the remotes. The switches 2-9 on the receiver (by the motor) set the code, and switch 1 sets which button on the remote controls it. The trasmitter (remote) has only 8 DIP switches (2-9) for the code and they must match 2-9 on the receiver. The door should not close automatically. You press the button again to close it.