One for the opening limit and one for the closing limit.
Genie garage door starts to close then reverses.
Your garage door s logic board is the brain of your garage door opener.
Each photo eye has a light on it.
This video will show you a few quick.
Check the closing force control.
It goes partway down reverses direction and goes back up again.
This is almost always the result of a dirty or obstructed safety feature.
You can clean them off by using your finger or a dry rag.
You push the button to close the garage door.
Adjust the limits as needed.
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.
Or door will only open check safe t beam wire connection at the powerhead and at the stb s.
You will find that the door will only move an inch or so in the close direction and reverse.
Door starts down then stops before it is closed.
This issue can be an easy fix.
Check contact reverse test that is in the owners manuals check the garage door for binding.
This brain can wear out in time so you could need a replacement.
The problem is either due to a blocked path between the sensors dirty eyes loose wires at the sensors or at the motor head or just bad sensors.
Look at the photo eyes themselves if there are cobwebs or if there is dust on the lenses the eyes will sense this and cause the door reverse.
Your logic board needs replaced.
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.
When the opener is activated the screw rotates causing the nut to move until it reaches the switch.
When the opener reverses the screw turns the opposite way and the nut travels back.
Maybe you have to hold the garage door button down for the door to close.
If one of the eyes has been knocked out of alignment this will also cause the door to reverse.
If you re genie excelerator just stops when either trying to open or close your garage door check out this video.
However if the door travels all the way closed and then reverses look to the 2 nd 3 rd possible causes.
The transmitters remotes will not work to close the garage door.
There may be two nuts on one track.
When the logic board wears out it can cause your garage door to close then open and vice versa without explanation.
Get logic board replacement.
Check if limits are set properly.