That there are no obstructions.
One garage door sensor is green the other is red.
If just the red source led is out unplug the mechanism check the wiring and plug it back in.
And when they re blinking they re flashing a warning to the homeowner that something needs to be corrected.
If you find the lights turned off in one or both the sensors it indicates that there is a problem in power supply.
Replaced the door sensors and alignment appears to be fine as both green red lights are constant.
Fixing garage door sensors on an automatic garage door opener.
Did pull screw level to see if that was an issue re engaged lever not sure if did it up or down and still same problem.
Door starts down abruptly stops goes back up.
Inspect each sensor to make sure the green or red power indicator lights are.
I moved the red one and the red light stopped blinking but the door still won t open.
If both the red source and green sensor lights are on and not blinking then the door mechanism is working properly.
How long have you been dealing with this.
Look for small led lights on the sensors.
The sensors are little black boxes about the size of a deck of cards that can be found on either side of the bottom of the garage door.
Each sensor will usually have a light.
I put a new battery in the remote too.
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.
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.
If they re turned on in both the sensors then there is no issue with the power supply.
This video is not intended to fix all of the problems with the garage door sensors just to d.
A red sensor indicates a problem red sensor lights are an issue because they should generally be green.
One will have a green light that signifies power to the units and the other will have a red light that signifies that the sensors are seeing each other i e.
One will have a green light used to show that the units are powered up and the other will have a red light to show that there s no obstruction between the sensors and that they re seeing each other.
One sensor is red and one is green.
I ll do all i can to help.
These sensors are little black boxes found on either side of the bottom of the garage door.
With a security system that s tied to the garage door sensors other issues throughout the system could also cause a problem.
There usually is a light on each sensor.
Genie garage door opener with the red green light for detecting something in way of door closing.
If one or both of the lights are off check the fuses breakers and plugs for problems.