Having your garage door light blink continuously is not only annoying, it’s also a sign that there is something wrong with the mechanism. I set my craftsman for 2-1/2 which was right for me. The light a … It has acted up a couple times before, but the last two days it has been awful. However, the two most common reasons include a problem with the lock button and malfunctioning safety reversing sensors. These obstructions can include things like spiderwebs or dirt that got on the outer lens of the Lately our garage door opener light keeps turning itself on randomly. My Craftsman 41AC150-2 garage door opener stopped working when the door was half way opened and all that happens now when I push the remote or the mounted button is a clicking at the unit. Give your garage door opener a try. Set the duration for garage door opener light to stay on after operation. Sears Craftsman garage door openers have an important safety feature that prevents the door from closing when something or someone is in the … Use the navigation buttons to scroll to LIGHT SETTINGS. The Garage Door Opener Light Comes On, But Won’t Turn Off! Select a range of 1-1/2 to 4-1/2 minutes. If you find that it’s still not working, or you still don’t see a solid yellow light, look for obstructions. Source(s): Master electrician and electronics grad. Why is Help! There are several reasons why your garage door opener is doing this. Turn the motion detection feature OFF/ON, and turn the entry light feature OFF/ON.