Safety Sensors & Wiring
Troubleshooting guide for alignment and wiring issues that prevent doors from closing. Explains common causes like blocked sensors, blinking lights, and how to test for faulty components.
Check LEDs: Each photo eye has a status LED. One is the sending unit, the other is the receiving unit. The receiver LED must be solid (not blinking). Loos...
Thu, 23 Oct, 2025 at 12:44 PM
No power: If both LEDs are off, check low-voltage wiring at the opener terminals and at the sensors. Look for broken staples or loose connections. Misalig...
Thu, 23 Oct, 2025 at 12:45 PM
Sensor logic active: The opener refuses to close (and may flash the light) if it does not see a valid beam. Confirm the receiver LED is solid. Wiring reve...
Thu, 23 Oct, 2025 at 12:45 PM
LED test: With both sensors wired, the receiver LED should be solid. If it never goes solid after careful alignment, suspect a bad sensor or a wiring issue...
Thu, 23 Oct, 2025 at 12:45 PM