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Yellow Light on Garage Door Sensor

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This is a common problem. It is easy to fix and should take only a few minutes.

How to fix the yellow light in your garage door sensor

If your garage door sensor turns yellow, it could be that your safety reverse sensors are out of alignment. Garage doors that are not properly fixed will not close. After cleaning both sensors, align them perfectly.

Garage door sensors are usually located a few inches above the ground. There is one sensor on each side of your garage doors.

These sensors are called a “photo eye” system. They send an invisible, infrared beam to your garage door from one side to the other.

These sensors receive a signal when you press the remote that closes your garage doors. They are there to stop your garage door from closing on someone or something.

Garage doors will only open if the invisible beam that runs across your garage door is not interrupted. Sometimes, these sensors can malfunction.

A malfunctioning sensor will show up as a yellow light on the sensor and a garage door that is not closing or trying to close, and then opening quickly again. The flashing light coming from the overhead control box will follow.

Clean dirty lenses

Clean the lens immediately you notice a yellow light at your garage door sensor.

These sensors are located so close to the ground in your garage that they are easily damaged by dirt, grime, and cobwebs.

It is simple to simply wet a towel with water and wash your lens.

You can even use mild cleaners like Windex, or something similar that doesn’t leave streaks.

Try not to get too much water on the lens.

While you’re at the garage door, clean the sensor on its opposite side.

Align sensors

Garage door sensors that are not aligned correctly can be the reason your yellow LED light is flashing and your garage door won’t close.

Both sensors must be pointed in the exact same direction and at the exact same angle.

To loosen the bracket holding the sensor in place, you can use a screwdriver. After you get it out, you can position it exactly the way that you like.

Once the sensor is in its correct position, tighten and lock the bracket.

You might be able to adjust it slightly with some force if you don’t own a screwdriver.

Some models only have one wing-nut that holds each sensor in place. This can be done by using your hands to loosen or tighten the nut.

After you are sure that both sensors are aligned perfectly, close the garage door.

Continue reading if it doesn’t work.

Replace or reconnect sensor wires

If cleaning and aligning the garage door sensors didn’t work, you can look at each wire individually.

These wires should be checked for fraying and damage. You should also confirm that everything is connected properly and snugly.

Sometimes these wires may become pulled or worn down over time, which can lead to a short in your garage doors system.

If you see any signs of damage to your wiring, I recommend calling a professional to repair it.

It can be dangerous to work with wires and electricity. There are some things that are worth the price.

Professionals will have the best tools and knowledge to diagnose the problem and fix it faster and more safely than you can.

Move items out of the way

A garage door sensor that isn’t working properly could also be caused by something else.

As previously mentioned, any obstruction to the infrared beam between the sensors will cause the garage doors to malfunction.

Sometimes, this is obvious like a ball or bike blocking the path.

Sometimes it is less obvious. You could find a bookcase or a box of tools that are placed next to the sensor, which may appear out of sight but is actually not.

If your sensor issues persist, I recommend that you take extra care to move anything or everything near the sensor.

Clear any debris within one foot, then close your garage door. Try it again to see if it works.

Get support

This will depend on your garage door brand, but if you have reached a dead end with your garage door and it is still broken, I recommend calling the experts.

The overhead control box will almost always have the support number for your opener printed. It is possible to need to lift the box to reveal the number.

You can also type your opener’s brand name into Google, followed by “support”, and then find the number.

Your old sensors should be replaced

If a yellow light on the garage door sensor continues to appear after cleaning the lenses, adjusting the alignment, connecting or replacing the sensor wiring, moving objects out of the way, and getting in touch with customer support, it may be time to replace the sensor.

There could be many reasons why your old sensors have stopped working, including overuse or exposure to extreme weather. No matter what the reason, you need to replace your old sensors.

Start by going online or visiting your local home improvement store to purchase a replacement pair. Check that the replacement sensors will work with your garage door opener model.

After you receive your compatible garage door sensors, it is time to install them. These are the steps to install your new sensors.

Installation of the door track:

  1. Slide the sensor bracket’s curved arms around the track. Place the sensor bracket flush against the track and snap it in place.
  2. Slide the carriage into each slot.
  3. Attach the wing nuts to the bolt by inserting it through the bracket hold. Both lenses should be pointed towards each other. The sensor bracket should not block the lens.
  4. The wire should be run from the sensors to the opener. Use the staples to attach the wire to the ceiling and wall.
  5. Each set of wires should be stripped of 7/16 inch (11mm) insulation. Separate the wires. Twist the black and white wires together. Twist the black/white wires together.
  6. The white wires should be inserted into the white terminal of the garage door opener. The grey terminal of the garage door opener should be inserted with the black/white wires. Use a screwdriver tip to insert or remove wires from the terminal.

Pre-wired installation:

  1. The safety reversing sensor wire should be cut off at the end. You must ensure that enough wire is available to reach the wires already installed from the wall.
  2. Separate the safety-reversing sensor wires. Pick two pre-installed wires, and then strip 7/16 inch (11mm) from each end. You should choose the same pre-installed color wires for each sensor.
  3. Make sure that the wire nuts are used to connect the wires pre-installed to the sensor wires. The white wire would be connected to the yellow wire, while the white/black wire would be connected to the purple wire.
  4. Strip 7/16 inch (11mm), of insulation from the ends of wires that were previously used for safety reversing sensor. Connect the wires of similar colors.
  5. The wires that are connected to the white safety wires should be inserted to the white terminal of the garage door opener. Connect the wires that are connected with the white/black safety sensors wires to the grey terminal of the garage door opener.

Conclusion

Don’t be alarmed if you see a yellow light at one or both of the garage door sensors. This is very common.

This can be fixed by cleaning both the sensors and aligning them perfectly.

They should be at the same height and angle as each other pointed at one another.

If this doesn’t resolve your problem, you can inspect each wire coming out of each sensor.

Verify that the wires aren’t damaged, frayed, or otherwise disconnected. They can sometimes be accidentally pulled out of place or ripped.

Finally, remove anything and everything within one foot of each sensor. Sometimes, these items may interfere with or block the infrared beam between the sensors. This can cause them to malfunction.

We hope you found these steps helpful. If you don’t know the number, find the support number and call the experts.

You might have to replace your garage door sensors if all else fails.

What was your solution to the yellow light from your garage door sensor’s sensors? Please leave a comment below.

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