Your garage door opener is programmed with self-diagnostic capabilities. The UP and DOWN arrows on the garage door opener flash the diagnostic codes.
Click below to see descriptions
The safety reversing sensor must be connected and aligned correctly before the garage door opener will move in the down direction.
The garage door opener is equipped with a feature that turns the light on when the safety reversing sensors have been obstructed. This feature can be disabled using the door control, see Control Panel Setup.
Erase the memory from your garage door opener and reprogram the remote control(s).
Depending on the make, model, and year of your vehicle an external adapter may be required. Visit www.homelink.com for additional information.