If one or both of the lights are off check the fuses breakers and plugs for problems.
One garage door sensor is green one is red.
If the red light is blinking the sensors are not aligned.
Red sensor lights are an issue because they should generally be green.
The green light signifies your sensors have power while the red light signifies the sensors are aligned.
I moved the red one and the red light stopped blinking but the door still won t open.
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.
Each sensor will usually have a light.
Raise the garage door using the control button on the garage wall or the remote control unit from a vehicle.
My genie garage door won t open.
I ll do all i can to help.
Inspect each sensor to make sure the green or red power indicator lights are.
That there are no obstructions.
Replaced the door sensors and alignment appears to be fine as both green red lights are constant.
One sensor is red and one is green.
Door starts down abruptly stops goes back up.
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 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.
I put a new battery in the remote too.
At that point a homeowner may want to try.
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.
There usually is a light on each sensor.
If both the red source and green sensor lights are on and not blinking then the door mechanism is working properly.
Answered december 19 2019 when the infra red sensors are malfunctioning usually one of the sensor lights will be blinking.
If just the red source led is out unplug the mechanism check the wiring and plug it back in.
If getting debris away from the door makes no difference then there s more to the story.
These sensors are little black boxes found on either side of the bottom of the garage door.
The transmitters remotes will not work to close the garage door.
And when they re blinking they re flashing a warning to the homeowner that something needs to be corrected.
Genie garage door opener with the red green light for detecting something in way of door closing.