Garage Door Closes Then Opens And Light Blinks

If your garage door closes then opens and the light blinks, it could be a sign of a problem with the door's sensors. The sensors are located on either side of the door and they use a beam of light to detect when something is in the way of the door. If the sensors are misaligned or dirty, they may not be able to detect objects properly, which can cause the door to close then open again.

To fix this problem, you can try the following steps:

Make sure that the sensors are aligned properly. The sensors should be facing each other and they should be about 6 inches above the ground.
Clean the sensors. Use a soft cloth to wipe away any dirt or debris that may be on the sensors.
Check the wiring. Make sure that the wiring to the sensors is not damaged or loose.

If you have tried all of the above steps and the problem still persists, you may need to replace the sensors. Replacing the sensors is a relatively simple process, but it is important to make sure that you get the right sensors for your door. You can find replacement sensors at most hardware stores.

In addition to the sensors, there are a few other things that can cause your garage door to close then open and the light blink. These include:

A problem with the door's motor
A problem with the door's springs
A problem with the door's opener

If you have checked the sensors and the problem still persists, you may need to call a qualified technician to diagnose and repair the problem.

Here are some additional tips for troubleshooting garage door problems:

If your garage door is not opening or closing smoothly, you can try lubricating the tracks and hinges.
If your garage door is making a lot of noise, you can try adjusting the tension on the springs.
If your garage door is not responding to the remote control, you can try replacing the batteries in the remote.

By following these tips, you can help to keep your garage door running smoothly and safely.