Garage Door Opener Flashing Yellow Light
If you see that the sender sensor is not yellow and the receiver sensor is not green then this means that your sensors are probably off.
Garage door opener flashing yellow light. If the opener cannot detect that the safety sensors are properly working or connected then the opener lights will flash and the door will refuse to close. The led light that is referred to in this article is the small light that is located on the opener near the adjustment learn or program buttons. 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. The purpose of the safety sensors located on the bottom corners of your garage door is to automatically reverse your door if they detect motion underneath the door.
An open door will not close if the infrared beam is broken. The garage door sensor yellow light and the green light together create a solid illumination. Liftmaster motors will not operate when something obstructs the infrared beam between the safety sensors at the bottom of the garage door tracks. If the opener is in the wrong mode it will begin to flash the lights when you try to open or shut the door.
Wrong mode garage door openers have different modes besides just normal operations. You will need to use a ladder to access this area. By kenneth crawford troubleshooting a liftmaster opener with a flashing light involves inspection of the safety reverse sensing system. So how do you fix this issue.
Garage door opener light blinks led light blinking indicates a problem note.