Garage Door Safety Sensor Problems: Why Your Door Won’t Close
A garage door that refuses to close can be frustrating and stressful. In many cases, the problem is not the opener motor or the door itself. It is often the safety sensors.
Garage door safety sensors are located near the bottom of the garage door tracks. Their job is to detect objects in the path of the door. If something blocks the sensor beam, the door should stop or reverse.
These sensors are an important safety feature. Federal safety standards apply to automatic residential garage door operators, including requirements designed to reduce entrapment hazards.
When sensors are working properly, they help prevent accidents. But when they become dirty, misaligned, loose, or damaged, the garage door may not close correctly.
Common signs of a safety sensor problem include a garage door that starts closing and reverses, blinking sensor lights, a door that only closes when holding the wall button, or a door that will not close at all.
San Francisco garages can collect dust, moisture, and street debris, especially if the garage faces a busy street or alley. Even a small obstruction can interfere with the sensor beam.
Homeowners can safely try a few basic steps. First, check for objects near the bottom of the door. Next, wipe the sensor lenses with a clean cloth. Then, look at the sensor lights. If one light is blinking or off, the sensors may be misaligned.
If cleaning and basic alignment do not solve the issue, the problem may involve wiring, sensor failure, opener settings, or track movement.
Do not force the garage door closed if the safety system is malfunctioning. A professional technician can test the sensors, inspect the opener, and restore safe operation.
Garage Door Experts Repair & Installation provides garage door sensor repair and troubleshooting in San Francisco. We are located at 748 Broadway, San Francisco, CA 94133, serving North Beach, Chinatown, Russian Hill, Nob Hill, Downtown San Francisco, and surrounding neighborhoods.