Make sure the door doesn't hit the floor and then reverse. If it does you need to adjust the 'down limit' which is on the side of the motor unit. Turn it a bit in the opposite direction of the arrow printed on the cover. You may also have a bad wall control or the wiring to it. The wall control goes bad from use and the staples holding the wiring sometimes cuts through the insulation and cause intermittent operation. You can eliminate this possibility by removing the wire on terminal #1 on the rear of the motor unit. You can eliminate the wall control by removing the wires connected to the back. Your remotes will still work.
When you shut the door next time make sure it stays down. if not adjust up down on the operator. or it's hitting something or your photo eyes are not aligned could be your track loose check and get back to me.
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