The location of the switch will depend on the model of the device.
Genie garage door wall switch not working.
Look for labeling such as vacation on the unit then press and hold this button.
To test the wires detach both from the switch and carefully touch them.
Take proper safety precautions to ensure that you are not injured if the door operates while you perform the following tests.
You will find that the door will only move an inch or so in the close direction and reverse.
The locking mechanism protects access to the garage by disabling the power unit.
Check the console lock switch.
The wiring is loose at the opener.
For some units lockout mode produces a flashing button.
The transmitters remotes will not work to close the garage door.
Check that the wires are secure by gently tugging on them.
If the wall switch is broken the likely culprit is either the switch itself or the wiring.
Most switches have two wires.
Depending on your opener you may have screw terminals or push in connectors.