The sunlight shouldn't affect it. I can't think of any way that it would. "I have solid green and orange LEDs, " But that doesn't mean that they are aligned correctly and the slightest vibration could throw them off. They can be close enough to make the LEDS light up while the door isn't moving. Watch the LEDS while it is closing and see if they blink. Use a string or straight edge if you have one that is long enough, or you can also use a laser level. Using a string is easiest to describe, so I will use that example. I hope you can figure out my instructions! It's easier with two people but if you are doing it alone. Tie the string below one sensor and pull it over the top of it, then over the top of the other sensor. The string should lay flat across both. Adjust if needed. Then tie off to the side of one and pull across the other and adjust that axis also. Repeat step one in case the adjustment moved the other axis. I hope this helps.

brian I answered your post under Tool Shed.

Ok, had some free time yesterday and spent a few hours trying to fix this darn opener. I now got the opener to go all the way up, but it still won't go down more than 6 inches. What I do is trick it by hitting the button on the remote and then hitting it again when it is about to reverse. I do this over and over until the door makes it all the way down (what a pain), then I adjusted it perfectly to stop once it goes all the way up. What I did to get it to go all the way up I'm not even sure. I messed with all the wires to make sure nothing was loose or disconnected, everything was fine though. I just kept playing around with everything and poof, all of a sudden the sucker was going all the way up. Now I need to figure out what to do to get this thing to go down. I have tried over and over using the down force and the other down adjuster, but it does nothing to help this problem. I'm hoping one of you guys will know what is causing this now that I at least got the door to go up fine. Thanks!

The sensor wires must be connected correctly for them to work. The 2 solid white wires go to terminal 2 and the 2 white wires with the black tracer go to terminal 3. You need to also make sure the wires are not broken anywhere. Alignment is not all that hard if they are working. You just watch the small lights. If the above is all okay I suspect your sensors are bad.