(863) 238-0866 Book a Technician
Closed white roll-up door seen straight on

Safety Sensors

Garage Door Sensor Repair in Moore Haven

Photo-eyes aligned, wiring repaired or sensors replaced, so the door closes on the first press and still stops and reverses for people, pets and cars.

Door won't close? Get help at (863) 238-0866

Two Small Eyes, One Big Job

Photo-eye sensors sit a few inches above the floor on each side of the door and send an invisible beam across the opening. If anything breaks that beam while the door is closing, the opener must stop and reverse. Federal safety standards have required them on residential openers since the early 1990s.

When the beam is blocked, the eyes are knocked out of line or the wiring fails, the opener treats it as an obstruction and refuses to close. Sun glare, a bumped bracket, spider webs or chewed wire are common causes here. We find which one it is and leave the system working as designed.

Sensor Trouble, Spotted Early

  • Door reverses before closing

    The door starts down, then pops back up for no visible reason. The opener light often flashes to signal a sensor fault.

  • Closes only if you hold the button

    Holding the wall button overrides a failed sensor on many openers. It works in a pinch, but the safety system is not doing its job.

  • Sensor light off or blinking

    Each eye has an indicator light. If one is dark or flickering, the sensor is misaligned, dirty, damaged or not getting power.

How We Sort Out Sensors

The fix is often small, but it has to be the right one.

  1. 1

    Check the basics

    Lenses are cleaned, brackets tightened and both eyes aimed at each other until the indicator lights hold steady.

  2. 2

    Test the wiring

    Low-voltage sensor wire runs along walls and ceilings where it gets stapled, pinched or chewed. We trace and repair breaks or run new wire.

  3. 3

    Replace and verify

    Failed sensors are replaced with units compatible with your opener, mounted at the correct height, and we break the beam mid-close to confirm the door reverses.

Sensor Repair Questions

Can sunlight really stop my door from closing?
Yes. Low morning or evening sun shining straight into the receiving eye can swamp the beam, so the opener thinks something is in the way. It tends to happen at the same time each day. Swapping the sensor sides or adding a sun shield usually solves it.
Can the sensors just be bypassed?
No, and we won't do it. The photo-eyes are what stop a closing door from landing on a child, pet or car. Bypassing them or jumping the terminals removes that protection entirely. A faulty sensor should be repaired or replaced, not taken out of the circuit.
How high should the sensors be mounted?
Generally no more than six inches above the floor, which is what opener manufacturers specify so the beam catches small children and pets. Both eyes should sit at the same height, face each other squarely and be fixed to solid brackets that won't get knocked by bikes or bins.

Get the Door Closing Normally

A sensor fault is usually a short fix, and it puts the door's main safety feature back in working order.

(863) 238-0866 — get the photo-eyes lined up