Garage door sensors are an essential part of any garage and any malfunction can greatly affect your safety. The most common causes of sensor malfunctions are problems with photosensors, wear and tear on electrical components, and damage to the cables. Excess water from rain or sprinklers can also cause a short circuit in the sensor and cause a malfunction. It's important to understand how to troubleshoot door sensors so that you can always keep this part of your garage in good shape.
If the door goes up but down only when you hold down the wall switch, check that the safety sensors are aligned. The small light on each sensor should come on when there is nothing between them. If none of these troubleshooting options work, check the garage door sensor manual and see if it contains anything that might help you fix the problem. A great way to check the electrical connection is to check if other parts of the garage are receiving power. Direct sunlight shining on the sensor's eyes can also cause them to misbehave.
Sometimes the problem may be due to normal wear and tear, especially if you've been using the same sensor for more than ten years. With children going in and out to play basketball, endless Christmas lights and cables, and the dog running in and out of the garage, the sensors on the garage doors can move quite easily. Other signs include flickering lights to open garage doors, missing sensor lights, or flickering sensor lights. When something gets in the way, the door will refuse to close or it will be partially closed and reversed. The latest garage door sensors are technologically advanced and even allow you to control opening and closing through an application on your smartphone. If you suspect that your garage door sensors are malfunctioning, it's important to take action as soon as possible.
You can save time by using existing cables and if necessary, replace them with new ones. In addition, all cables must be intact for the door to work properly and you must connect them correctly to the garage door opener.