In article . net,
"Ralph Mowery" wrote:

I had the same problem and even though the led was lit the door would still
go about halfway down and then back up. This was mostly during the daytime
and not at night. I did a careful reaiming of the electric eyes and the
door operates normally now.
Try moving the eyes slightly.

Who knows? Like you, this problem occurs for me just in the daytime. I
bent the frame on one electric eye so it was way off, then realigned,
and the door went down perfectly. Let's hope that's all it was.