According to liftmaster issues with the safety sensor wiring typically occur because of a poor connection incorrectly connected wires or a short in the wire from a staple.
Garage door opener sensor light not working.
Replacing your old sensors.
Adjust each sensor in small.
The problem is either due to a blocked path between the sensors dirty eyes loose wires at the sensors or at the motor head or just bad sensors.
Cleaning and adjustment remove any debris dust or cobwebs from the electric eye lenses on each sensor with a clean rag.
Liftmaster suggests them be placed no higher than 6.
When the infra red sensors are malfunctioning usually one of the sensor lights will be blinking.
If the light is still not coming on it could be the light socket or the logic board.
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.
Since the lack of power supply is a common problem check the wires around the sensor when the led lights are not flashing.
It only comes on when the sending sensor is making the proper connection.
Sweep the garage floors and look through the sidings to ensure that there are no objects to obstruct the door.
The sensors have to be aligned with each other and also have to be connected correctly to the garage door system in order to work.
Check power supply to garage door opener.
Follow these easy steps there isn t a solid light coming from the safety eye sensors.
Many times the malfunction can be due to a loose connection or broken wire.
Now that you have made sure there are no obstructions and that both sensors are aligned properly.
Unplug the garage door opener then immediately plug the opener back into the electrical outlet.
If your garage door opener light is not working the fix might be as simple as changing the light bulb.
The transmitters remotes will not work to close the garage door.
More and more products are being produced at a faster rate and that leads to reduced quality.
Light bulb needs to be replaced in garage door opener.
Plug the opener back in.
Loosen the nuts just.
If it s the light socket or logic board.
Genie garage door openers have a green light on the sending sensor.
This light should always be on unless it is not getting power.
Loosen the small nuts that hold each sensor to the l brackets with a small adjustable wrench.
Cycle the garage door.
To determine which one it is follow the steps below.