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.
Garage door won t open from outside with remote.
Both remotes will open door from inside garage as will wall switch.
If the door opens the problem is likely a worn out battery in your remote.
Check the battery in your remote operator by walking into the garage holding it in your hand.
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.
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.
My garage door remotes will not open door from the outside unless you are right in front of the door.
Press the button as you observe a small blinking red light on the box where the chain enters and exits.
If that doesn t work and you still have a nonworking remote you may want to have a professional examine it.