Garage Door Safety Turn On Light Sensor Not Working

The problem is either due to a blocked path between the sensors dirty eyes loose wires at the sensors or at the motor head or just bad sensors.

Garage door safety turn on light sensor not working.

All garage door openers use a sensor light to prevent the door from closing when an object is in its path. Inspect each sensor to make sure the green or red power indicator lights are. Sometimes the sensor becomes faulty and needs to be replaced. The garage door sensor yellow light and the green light together create a solid illumination.

Two types of accidental obstructions can cause the safety sensor to prevent a garage door from closing. According to liftmaster issues with the safety sensor wiring typically occur because of a poor connection incorrectly connected wires or a short in the wire from a staple. The sensors have to be aligned with each other and also have to be connected correctly to the garage door system in order to work. If you do not see a solid illumination or your garage door is not working the problem is most likely due to the sensors being out of line.

Raise the garage door using the control button on the garage wall or the remote control unit from a vehicle. If your craftsman garage door opener fails to close the door properly you may need to disable the sensor light temporarily until you can replace the sensors. Look for small led lights on the sensors. For people who do not know the transmitter has the yellow light and the receiving sensor has the green light.

The first is an obstruction in the path of the door and therefore in the path of the sensor. When the infra red sensors are malfunctioning usually one of the sensor lights will be blinking. A common cause of a malfunctioning garage door sensor is lack of power supply.