The most common cause of garage door remote control failure are weak or dead batteries.
Garage door opener remote won t work.
If remote controls work reconnect the wires to door control and test.
If the green light blinks on the wall control the lockout feature is on.
Remove the wires from the back of the door control.
On the subject of batteries the type that you use in the remote is important.
In most cases you ll see that the garage door starts opening again.
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.
If remote controls do not work then replace the wire.
You ll need to try replacing the batteries and trying the remote again.
To be sure that the batteries are always good use name brand quality batteries instead of discount brands.
Unplug the garage door opener and check the wiring connections on the panel.
If the remote works from inside the garage but not from the outside then most likely the antenna wire on the garage door opener itself may be damaged broken or not in visible range.
Quickly test the quality of your opener s wiring by following these steps.
Test the remote controls.
Check to be sure the antenna is attached and if it is not hanging down from the unit move the antenna so it can catch the beam being sent by the remote.
If the garage door opener lights blink twice when you press the remote check the wall control to see if you have the lock feature enabled.
The garage door remote won t work but the wall switch does check the batteries and electrical connections in the remote to make sure they are working correctly.
If remote controls continue to work then there was a loose connection with the wires.
Some garage doors have infrared sensors that shoot an invisible beam across the door.
If remote controls do not work replace the door control.
The lock button feature disables all remotes.
If they are working correctly the problem might be because of the safety sensors.