Withor without my door attached the chain moves only about six to eight inches and then reverses. My light goes on as I cross the sensor lights and goes off a few minutes later. I can activate the motor from the remote or from the wll switch. Whatever adjustments I make from the adjustment knobs has no effect whatsoever. It is aa new installation in Bequia in St.Vincent and the Grenadines. My email is g.r.mitchell@live.ca Any help you can give will be much appreciated. George Mitchell