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 red light on garage door sensor.
Whether it won t open won t close or only responds intermittently there s a lot of frustration in a garage door that just won t do what it should.
Linear garage door openers have a green light on the sending sensor and a green and red light on the receiving sensor.
There usually is a light on each sensor.
If the wiring is fine and your garage door opener is still not working then the problem may be that one of the sensors has simply failed.
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.
Look for small led lights on the sensors.
I ll do all i can to help.
If they re turned on in both the sensors then there is no issue with the power supply.
One sensor is red and one is green.
If you find the lights turned off in one or both the sensors it indicates that there is a problem in power supply.
I moved the red one and the red light stopped blinking but the door still won t open.
I put a new battery in the remote too.
These sensors are little black boxes found on either side of the bottom of the garage door.
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.
Garage door sensor is blinking red.
Genie garage door opener with the red green light for detecting something in way of door closing.
How long have you been dealing with this.
That there are no obstructions.
Door starts down abruptly stops goes back up.
The green lights let you know there is power going to the sensors.
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.
Adjust each sensor in small increment by hand until the green or red power indicator lights on each are illuminated.
This indicates the electric eyes are aligned and the circuit is complete.
A common cause of a malfunctioning garage door sensor is lack of power supply.
My genie garage door won t open.
Replaced the door sensors and alignment appears to be fine as both green red lights are constant.
This can happen from old age your basic wear and tear or even constant exposure to the sunlight.