Most garage door openers are activated by a remote control, a control panel inside the garage or a keypad fitted to the outside of the door frame. Troubleshooting your garage door opener's keypad helps you solve minor technical problems that prevent you from gaining access to your garage from the outside. Problems often arise through incorrect use, incorrect setup or bad installation.
Double-check that you are entering the correct combination; you might be making a mistake if you recently changed the code. Slowly enter your code, making sure you don't press two buttons at once. Some models of garage door opener require you to hit "OK" before the motor opens the door.
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Ensure that the opener is still connected to its power supply. Plug another appliance into the opener's outlet; reset the circuit breaker or replace the fuse if the outlet doesn't work. It's easy to accidentally unplug the opener when you need an electrical outlet.
Check that the keypad is enabled for use with your garage door opener. Some models of opener allow you to temporarily deactivate the external keypad using the buttons on the opener mechanism. Check your instruction manual for more information on activating your keypad.
Check the wiring of your garage door opener; mistakes could have been made during the installation. Consult your opener's installation manual for exact wiring instructions or call a qualified technician to help you repair the opener. You might qualify for free service if the appliance was incorrectly installed by a technician.