Why is there a solid red light on my Genie garage door opener?

A solid red or flashing red LED indicator light on a Genie garage door opener typically indicates an issue with the safety reversing sensors (photo-eyes) located near the floor on either side of the garage door tracks. This signal means the infrared beam between the sensors is blocked by an obstruction, the lenses are dirty, or the wires have loose connections or alignment issues. Additionally, on certain models, a red status light can signal a temporary diagnostic fault or backup battery warning. Callout type="warning" title="Safety Warning": Ensure the garage door path is completely clear of people and objects before testing or operating the door. Verification: Check that both sensor LED lights glow with solid green and amber lights without flickering, indicating clear alignment.