Blink 4-6

How to Fix It

1. Check both photo eye LEDs.

   Each sensor has a small LED — usually green or amber.
   Both should glow steady.
   If one is off or flashing, that's the misaligned sensor.
   Most cases are just one out of alignment, not both.

2. Loosen the wing nut on each bracket.

   Each sensor mounts on a small adjustable bracket.
   The wing nut lets the sensor tilt up, down, left, right.
   Loosen by hand — don't use tools, you'll over-tighten and crack the plastic later.

3. Adjust until both LEDs are solid.

   Aim each sensor straight at the other one across the door opening.
   Watch the LEDs as you adjust.
   When alignment is right, both LEDs glow steady.
   If one flickers, you're close but not perfect — fine-tune.

4. Tighten the wing nuts.

   Once both LEDs are solid, tighten the wing nuts firmly by hand.
   Don't crank them down with tools — the brackets are flexible plastic and will crack.
   Test by pressing the close button — door should close cleanly.

5. Clean the lenses if alignment is good but blink 4-6 persists.

   Wipe each lens with a soft dry cloth.
   Cobwebs and dust block the IR beam without breaking it visibly.
   For dried-on dirt, use a damp cloth then dry.
   Especially common in garages that aren't used daily.