Liftmaster sending sensor is yellow and receiver light is.
One garage door sensor light is yellow.
Another possible problem could be the sun.
Garage door sensor light is yellow not letting door shut.
A common cause of a malfunctioning garage door sensor is lack of power supply.
The garage door sensor yellow light and the green light together create a solid illumination.
What color should the lights be on garage door sensors.
If you find the lights turned off in one or both the sensors it indicates that there is a problem in power supply.
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.
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.
Garage door sensor light is yellow not letting door shut.
Front of the sensor.
You ll need to first equip yourself with a wrench of some sort and a tape measure.
Door will close to about 1 foot remaining and then reverse as liftmaster sending sensor is yellow and receiver light is green.
A simple fix would be to block out the sun by fixing a piece of cardboard in.
If they re turned on in both the sensors then there is no issue with the power supply.
When depressing the garage door opener the door starts to.
Look for small led lights on the sensors.
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.