Garage Door Won't Close
Of all the calls that I receive in a day, I believe the garage door not closing is one of the most common. The call usually starts with one of the following: "my remote won't close the door", "I have to hold the wall button to get it to close", "it gets halfway down and comes back up". It can be frustrating when you are trying to leave and your garage door keeps reversing on you. Typically, what has happened is that your safety sensors have been knocked out of alignment. If you are like me, you find that the corners near the front of your garage are a perfect spot to store your rakes or maybe your fishing poles, possibly even your garbage cans; when you go to move these items, you unknowingly knock your sensors and the trouble begins. There is a simple way of knowing if your sensors are out of alignment, usually one of the sensor lights will be blinking. I would suggest before you try to adjust the sensors yourself, that you first confirm that there are no objects in the way of them seeing each other. Also check for spider webs and dust. We have actually gotten to job sites and found leaves hanging in the way of the sensors. Once you have ruled out these things, then you can try to 'lightly' adjust your sensors. The sensors need to be parallel to the floor and level with each other. Once you have both lights burning steady, then you can give your remotes another try. If this still doesn't resolve the issue, you can override the problem my holding down the wall station until your garage door closes. This is, of course, just a temporary fix and you will have to give the professionals at Ace Garage Door and Opener a call and have your door and opener serviced.
wikiHow offers a short tutorial that you may find helpful: https://www.wikihow.com/Align-Garage-Door-Sensors#Adjusting-the-Sensors_sub