Oftentimes when your garage door opener remote stops working, it is because the remote transmitter has lost its signal with the motor. The remotes work by electronically sending a signal to the motor inside your garage, allowing you to open and close the door. Troubleshooting a lost signal on your remote is as easy as resetting the old signal on the motor opener and equipping your transmitters with new signals.
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Press the "Learn" button on your garage door motor to reset the current codes and transmitters and wait for the red indicator light to begin blinking. The button is near the antenna wire on the back of the system.
Press the "Open" button on your remote transmitter three times while inside of your garage and pointed at the motor. Do this within 30 seconds of pressing the "Learn" button.
Wait for the red indicator light to stop blinking on the garage motor and press the "Open" button on your remote to complete the troubleshooting, install the new transmitter frequency and access your garage door opener.