If your door opener is brand new the remote won t work until you program it.
Liftmaster garage door opener motion sensor not working.
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 you have a wall mounted model check the lock switch.
When a remote stops working on an existing door opener it s often because you need to change the batteries.
Here s how to tell if garage door sensor is bad five things to check.
Garage door opener remote controls.
The garage door sensor yellow light and the green light together create a solid illumination.
If it s on the remote won t work so turn.
Verify the wire connections are correct on the garage door opener.
Other signs include flashing garage door opener lights missing sensor light or flashing sensor lights.
If your garage door sensors are clean it could be the alignment or the wiring.
Whether you have a belt drive chain drive or wall mount model find helpful resources manuals videos and more to help you diagnose and fix the problem.
Follow the procedure in your owner s manual for doing this.
Liftmaster offers a range of remote controls that fit any lifestyle and work with nearly any garage.
Check for incorrect wiring between the sensors and the garage door opener.
Okay now that you know some of the common signs of garage door sensor malfunction you re ready for the next step troubleshooting.
If your light does not work at all or turns on inconsistently you may be able to troubleshoot and fix the problem without spending a lot of time or money.
For the door to close correctly without reversing the safety sensors need to be aligned perfectly and there should be nothing in the way of the light beam.
For people who do not know the transmitter has the yellow light and the receiving sensor has the green light.
To prevent the garage door from injuring someone in the door or damaging an item in the way of the door all models of liftmaster garage door openers come installed with a safety sensor.
Here s what liftmaster suggests.