You may find that the door will only move an inch or so in the close direction.
Garage door only closes if i hold the button.
They can easily become mis aligned due to bumping twisting and loose mounting.
This method is the only way to override the safety and close the door.
Step by step procedures to try if the garage door of your home will not go down without holding the button before calling a repair man was this video helpful.
Any transmitter like a handheld clicker or outdoor keypad will also not work to close the door if there is a problem with the sensor.
Misaligned dirty or defective photo eyes.
Copied this off the website in my source.
You will find that the door will only move an inch or so in the close direction and reverse.
You are overriding the infrared beam sensor when you hold down the wall button continuously while the garage door is closing.
This method is the only way to override the safety sensors and close the door.
When this happens your garage door will only close by holding down on the wall button or wall console until the door fully closes.
A small amount and the door returns that is the sign of the safety sensor system.
When this happens your garage door will only close by holding down on the wall button until the door fully closes.
Until it completely closes and the remotes only make the door move.
One of the sensor lights will usually be blinking when there is a malfunction.
When you can close the door with the wall button by holding it down.
This is also a direct clue that the safety sensors are the problem.