They can easily become mis aligned due to bumping twisting and loose mounting.
Garage door only closes if hold button.
You push the button to close the garage door.
You will find that the door will only move an inch or so in the close direction and reverse.
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.
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.
When this happens your garage door will only close by holding down on the wall button until the door fully closes.
When the garage door is closed and the button on the control is pushed it will open all the way just fine but when i try to close the garage door it won t close unless i hold the button down until it s in a the fully closed position.
You may find that the door will only move an inch or so in the close direction.
This is almost always the result of a dirty or obstructed safety feature.
So if you have to do this to close the door it means the sensor is malfunctioning.
When you can close the door with the wall button by holding it down until it completely closes and the remotes only make the door move a small amount and the door returns that is the sign of the safety sensor system.
If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch.
This is also a direct clue that the safety sensors are the problem.
In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor.
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 and close the door.