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Table of Contents

Understanding Your Garage Door Opener Sensors

How to Know When Garage Door Sensors are Misaligned

How to Re-Align Garage Door Sensors

  1. Resource Center
  2. Repair

How to Align Garage Door Sensors: The Garage Door Won’t Close and Lights Blink 10 Times

3 min readUpdated Mar. 15, 2024Lyle WeischwillGarage Door Opener
Image of a technician aligning garage door opener safety sensors.

Is your garage door acting up, refusing to close or reversing unexpectedly? Do the lights on the garage door opener blink 10 times when this happens? These are tell-tale signs of misaligned garage door opener sensors. Don't fret; aligning your garage door opener sensors can be a straightforward DIY task. This guide will take you through the process to get your garage door back to working smoothly and safely.

KEY TAKEAWAYS

  • Misaligned garage door opener sensors can prevent the door from closing properly using the remote—the door will reverse and the light will blink 10 times.
  • To close the garage door in a pinch, you can press and hold the activation button on the wall control in your garage.
  • Follow the steps provided below to realign the garage door sensors when they’re knocked out of alignment.

Note: In a pinch, you can typically shut the garage door using the keypad or button control by pressing and holding the activation button until the door closes completely. Make sure nothing is in the path of the closing door. Holding down the keypad activation button overrides the garage door sensor system because you’re in the vicinity of the garage door opener and can monitor the door closing without .

Understanding Your Garage Door Opener Sensors

Garage door opener sensors are the unsung heroes of your garage door system. They ensure safe and efficient operation by detecting any obstructions in the door's path and preventing accidents or damage.
These sensors work in pairs, one emitting an infrared beam and the other receiving it. When something disrupts this beam, the sensors alert the door to stop or reverse. Also, if the sensors get knocked out alignment, the door won’t close using your remote device.

When garage door sensors are blocked or misaligned, the door will reverse and the garage door opener lights will blink 10 times.

How to Know When Garage Door Sensors are Misaligned

If there's nothing blocking the safety sensors, check their alignment. You may have bumped a sensor out of position.

Each safety sensor has an indicator light. The sending sensor, which has the yellow light, transmits the infrared beam to the receiving sensor, which has a green light. The garage door sensor yellow sending light should always be lit. But you’ll only see the receiving sensor's green light when the sensors are aligned and unobstructed. Make sure that the garage door sensor yellow light is on and then check the green light on the receiving sensor.

If the green light on the receiving sensor is off, then the sensors are likely misaligned.

How to Re-Align Garage Door Sensors

So, how do you set things right? Here are steps to align your garage door opener sensors:

  1. Make sure the sensor brackets are set at the same height. Move one of the sensor brackets if necessary to align the sensors.
  2. Align the sending sensor (the one with the yellow light) to point directly at the receiving sensor.
  3. Adjust the receiving sensor until it detects the beam from the sending sensor and the receiving sensor’s green light turns on.

Test garage door operation to see if that fixed the problem. In most cases, the garage door opener will work normally.

If not, other problems could be preventing the opener from working. View this helpful DIY video and follow its troubleshooting tips to help you resolve problems with the garage door opener safety sensing system:

With these steps, you'll likely be able to get your garage door opener sensors fixed and your garage door back in action.

If your unable to resolve this garage door problem yourself, schedule garage door opener service and we’ll send a service technician to your home to fix the issue.

Schedule your garage door opener repair now!

Experience hassle-free garage door opener repairs by our experienced technicians, ensuring your daily routines are uninterrupted and your property remains secure.

Call (213) 596-2538 or schedule online now.
Text (240) 616-1772 to schedule now.

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Repair Garage Door Opener Resources

Title image for blog article "How Does a Garage Door Opener Work?"
5 min readNov. 18

Learn how a garage door opener works and how to troubleshoot common problems.

Learn how a garage door sensor works.
7 min readNov. 13

Learn how the safety sensors work on a garage door opener.

Homeowner ponders the mysteries of a malfunctioning garage door.
6 min readOct. 18

These top 5 tips for repairing a garage door will help you handle the issue like a pro. Expert advice to help you troubleshoot and resolve common issues with ease.

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7 min readAug. 28

Prevent garage door issues this winter with expert maintenance tips and solutions from Sears Home Services.

Glossary Terms

A garage door extension spring is a type of spring mechanism that assists in opening and closing a garage door by extending and contracting, providing the necessary force to balance and move the door safely.

A garage door spring is a critical component that counterbalances the weight of a garage door, enabling it to open and close with reduced force, thus ensuring smooth and safe operation.

A garage door torsion spring is a crucial component that counterbalances the weight of a garage door, enabling it to open and close smoothly and safely.

A furnace condensate pump is a device installed in HVAC systems, particularly high-efficiency furnaces, to collect and automatically remove the water (condensate) produced during the heating process.

Common Appliance Symptoms

The most common reasons your Whirlpool washer won't stop filling are a clogged water valve, a bad water-level pressure switch, or a malfunctioning electronic control board.

The most common reasons your Whirlpool washer won't spin or drain are a seized gearcase, a broken motor, or a failed door switch.

The most common reasons your Whirlpool washer won't turn off are a malfunctioning electronic control board, broken motor or a jammed door lock assembly.

The most common reasons your Whirlpool washer won't start cycle are a malfunctioning electronic control board, jammed door lock assembly or a faulty user interface.

The most common reasons your Whirlpool washer vibrates are a damaged suspension rod, malfunctioning electronic control board or a dead fan.

The most common reasons your Whirlpool washer is experiencing the rinse cycle not working are a broken lid switch, a bad water-level pressure switch, or a malfunctioning electronic control board.