If they are working correctly the problem might be because of the safety sensors.
One garage door remote not working.
Unplug the opener and disconnect the two wires from the motor reconnect your machine to power then clear its memory and reprogram all remote controls unplug the device for a second time and reconnect the control wiring to.
Quickly test the quality of your opener s wiring by following these steps.
How to fix a garage door opener remote that has stopped working check the batteries.
Remote battery contacts make sure the contacts aren t damaged the battery contacts inside your remote are what.
So check the batteries first.
Dirty worn or wet contacts inside of the battery case inhibit the electrical current.
Here s what you should check for when the door won t open.
The most common cause of garage door remote control failure are weak or dead batteries.
Troubleshooting tips for when your garage door remote suddenly stops working and or the buttons are not responding.
Some garage doors have infrared sensors that shoot an invisible beam across the door.
Access the batteries by opening the panel on the back.
If your device has screws remove them and open the panel.
Check the battery contacts.