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.
Garage door not closing without holding button down.
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.
Another thing that can prevent your garage door from closing are obstructions that are blocking the lenses.
One sends a beam of infra red light to the other.
If anything interrupts this beam of light the garage door will not close and the ceiling light on the opener mechanism will flash as mentioned in the previous step.
Check for interference from adjacent photo eye sensors of any brand.
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.
They can easily become mis aligned due to bumping twisting and loose mounting.
You will find that the door will only move an inch or so in the close direction and reverse.
If something is blocking the safety beam then the garage door will not close.
Door starts down then stops before it is closed.
The transmitters remotes will not work to close the garage door.
Depending on the brand.
When this happens your garage door will only close by holding down on the wall button or wall console until the door fully closes.
Like mentioned above there are two lenses one on each side.
Clutter or obstructions that block the sensor are the first problems to look for if your door won t close or in extreme cases open at all.
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.