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