Ensure that the door is open and activate the opener.
If the sensor lights on garage door go off.
If your craftsman garage door opener fails to close the door properly you may need to disable the sensor light temporarily until you can replace the sensors.
Raise the garage door using the control button on the garage wall or the remote control unit from a vehicle.
All garage door openers use a sensor light to prevent the door from closing when an object is in its path.
Try pressing it again to turn it off.
If this is your situation the first thing you ll want to do is make sure these sensors are properly lined up.
You can choose to press the close button located on the wall of the garage or the remote button.
In this case check the alignment of the opener or better involve a technician.
Your door control panel is usually on the wall inside your garage.
If your liftmaster door opener light is blinking stays on or won t turn off you can simply access the smart control panel to change the setting.
Sometimes the light switch button is accidentally activated which causes the light to stay on.
The garage door sensor yellow light and the green light together create a solid illumination.
A common cause of a malfunctioning garage door sensor is lack of power supply.
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.
One of the sensors sends an infra red beam to the other sensor.
If your door control has multiple functions check the light button on the panel.
Inspect each sensor to make sure the green or red power indicator lights are.
If you find the lights turned off in one or both the sensors it indicates that there is a problem in power supply.
If the garage door closes it indicates that the sensors are not functioning.
For people who do not know the transmitter has the yellow light and the receiving sensor has the green light.
Look for small led lights on the sensors.
If any of these sensors should happen to get bumped or misaligned the infra red beam would be thrown off and the garage door won t go down.
While the overhead light built into your garage door will prove useful at night or when you re searching for something in your garage it s important to know how to turn your light off.
If the sending sensor is slightly off it can cause the connection with the receiving sensor to be off by several inches over the span of a 16 foot wide garage door.
