Replacing your old sensors.
Sensor lights are not on garage door.
Now that you have made sure there are no obstructions and that both sensors are aligned properly.
If your garage door sensors are clean it could be the alignment or the wiring.
Here s what liftmaster suggests.
The sensors use two photo eye lenses that transmit an infrared beam between them.
If the sensors are not.
Make sure there is power to the opener.
Liftmaster suggests them be placed no higher than 6.
Since the lack of power supply is a common problem check the wires around the sensor when the led lights are not.
Check if the safety reversing sensors are aligned.
Adjust each sensor in small.
Check for incorrect wiring between the sensors and the garage door opener.
Random flashing of that light is normal.
Bad sensors will not keep the door from opening and at least moving a short distance in the down direction.
Follow these easy steps there isn t a solid light coming from the safety eye sensors.
The lock button on the door control in on.
Cleaning and adjustment remove any debris dust or cobwebs from the electric eye lenses on each sensor with a clean rag.
Loosen the nuts just.
Safety sensors include two mounted sections one on each side of the garage door opening.
Sweep the garage floors and look through the sidings to ensure that.
Unlock the lock button if your door control has a lock button it may have been turned on.
Light doesn t activate on garage door opener when you cross safety sensor beam chamberlain group products which include the liftmaster chamberlain sears craftsman line of garage door openers have a feature where the opener light will turn on if you cross the safety sensor beam shooting across the opening of your garage door.
Loosen the small nuts that hold each sensor to the l brackets with a small adjustable wrench.
I think you have a power problem and should start by checking the house circuit breaker.
Troubleshooting check if there are any objects impeding the door.