Garage Door Sensor Will Not Light

If you own a garage door opener by lift master chamberlain or craftsman you ll notice that the sender sensor will usually shine a yellow light and the receiver sensor will usually shine a green light.

Garage door sensor will not light.

Raise the garage door using the control button on the garage wall or the remote control unit from a vehicle. For the door to close correctly without reversing the safety sensors need to be aligned perfectly and there should be nothing in the way of the light beam. If you see that the sender sensor is not yellow and the receiver sensor is not green then this means that your sensors are probably off. If you find the lights turned off in one or both the sensors it indicates that there is a problem in power supply.

So how do you fix this issue. Check the mechanism s source and sensor leds. If your garage door randomly doesn t close and the light blinks you may have a failing sensor. When the safety sensor is not properly aligned or something is obstructing the light beam the garage door will fail to close.

The garage door sensor yellow light and the green light together create a solid illumination. You ll need to first equip yourself with a wrench of some sort and a tape measure. If one or both of the lights are off check the fuses breakers and plugs for problems. 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.

The liftmaster garage door opener lights will flash for ten times. If they re turned on in both the sensors then there is no issue with the power supply. A common cause of a malfunctioning garage door sensor is lack of power supply. Each sensor will usually have a light.

If both the red source and green sensor lights are on and not blinking then the door mechanism is working properly. Look for small led lights on the sensors. These sensors are little black boxes found on either side of the bottom of the garage door.