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.
Garage door sensor light stays on.
A simple way to do this is to unplug the garage door opener and then plug in another device say your phone or a light bulb to see if it lights up.
If you ve hit the light switch on your panel the light on your garage door opener will remain lit until you click the button to turn it off.
Adjusting the light timer on a newer digital unit.
Raise the garage door using the control button on the garage wall or the remote control unit from a vehicle.
Each sensor will usually have a light.
A clockwise turn will increase the time the light stays on while a counter clockwise turn will decrease the time.
Your door control panel is usually on the wall inside your garage.
If you find the lights turned off in one or both the sensors it indicates that there is a problem in power supply.
Inspect each sensor to make sure the green or red power indicator lights are.
These sensors are little black boxes found on either side of the bottom of the garage door.
So how do you fix this issue.
Look for small led lights on the sensors.
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 the leds on both sensors glow it means they are not faulty.
A common cause of a malfunctioning garage door sensor is lack of power supply.
Try pressing it again to turn it off.
Now point the safety sensors at each other.
Sometimes the light switch button is accidentally activated which causes the light to stay on.
One of the benefits of this garage door system is that it is equipped with a motion sensor detector that triggers the light to come on when it senses movement.
Connect the white wire from the sensor to the white terminal of the garage door opener and then the black and white wire to the grey terminal.
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When your garage door opener is not responding to any command from the remote or the door control you need to check if the opener has electricity.
The range on most light units is from 90 to 240 seconds.
If they re turned on in both the sensors then there is no issue with the power supply.
The garage door sensor yellow light and the green light together create a solid illumination.
You ll need to first equip yourself with a wrench of some sort and a tape measure.