If your garage door will not stay closed this can be a big headache. No need to worry though, we have the solution, no matter the cause of the problem. Not only that, but in many cases it will be a problem you can solve yourself. How can we be so sure? Easy, there are only a couple possibilities and solving them is not difficult 9 times out of 10.
First we will deal with the most common problem of them. Your safety eyes ( or sensors) both terms are used interchangeably and are acceptable. If your opener reverses ( usually happens right away, but not necessarily) and then the lights on your opener flash most likely you have an issue with your sensors.
In order to fix this problem check to make sure your sensors are both lit up and solid ( the LED lights should not be off or flashing) The color of the lights vary depending on the brand of your garage door opener, the color of the lights have no bearing on the operation of the sensors.
If one of your sensors is blinking or off check for obstructions, misalignment or wiring issues. Once you have rectified the issue you will know because the lights will be lit up solid.
The next possible cause for your garage door not staying closed could be your close limit is not set properly. If your door is going all the way to the floor and then coming back up ( it’s possible you will notice the rail of your garage door opener bending as the door hits the floor) then stopping about ¼ – ⅓ of the way up. The close limit not being set properly is your problem.
In order to fix this issue you will need to reset your limit. On garage door openers with manual limit adjustments this is easily done with just a flat head screwdriver. If your opener is newer and has automatic limit settings, limits are set by pushing buttons. Due to the many different manufacturers and models there are many different instructions for reprogramming the limits on your opener. Please consult your owners manual in order to learn how to do this, if you do not have an owners manual you can download one online by doing a quick google search for your particular model number.
Another possible issue could be the door is trying to close but reverses at the same point every time. If this is happening to you and you have verified it is not the sensors then you need to check to ensure the door is not binding anywhere. This can happen for a few different reasons. In order to test this you should disconnect the door from the opener and run the door by hand. Just open and close it manually a few times going especially slow when you reach the point in the track where the door had been reversing when connected to the opener. If you feel binding check for damage on the section, it would usually come in the form of a crack on the top of the section somewhere. Other possibilities would be broken hinges, or broken/wore out rollers.
Going over the above scenarios should get your door closing and staying shut. If these did not help you should contact a professional garage door repair company. If you found damage to your door or hinges, it would also be a good idea to contact a professional.