How to Align Garage Door Sensors
Garage door safety sensors are critical components that prevent the door from closing on objects or people. When these photo-eye sensors become misaligned, your opener may refuse to close the door or flash error codes—most commonly LiftMaster error code 4-6. In this comprehensive, SEO-driven guide, you’ll learn how to align garage door sensors, troubleshoot error codes, and how to fix garage door sensors so your system operates reliably and safely.