Liftmaster Garage Door Opener Blinking Yellow Light

If your Liftmaster garage door opener is blinking a yellow light, it could be due to one of several issues. Here are the most common causes and how to fix them:

1. The door is not properly aligned

If the door is not properly aligned, it can cause the opener to work harder than it should, which can lead to the yellow light blinking. To fix this issue, you will need to adjust the door's alignment. There are two ways to do this:

Loosen the bolts that hold the door tracks to the ceiling and move the tracks until the door is aligned.

Loosen the bolts that hold the door to the brackets and move the door until it is aligned.

2. The door is too heavy

If the door is too heavy, it can also cause the opener to work harder than it should, which can lead to the yellow light blinking. To fix this issue, you may need to replace the springs on the door. There are two types of springs: extension springs and torsion springs. Extension springs are located on the sides of the door, while torsion springs are located above the door.

3. The motor is overheating

If the motor is overheating, it can cause the opener to shut off and the yellow light to blink. To fix this issue, you will need to let the motor cool down. Once the motor has cooled down, you can try opening the door again.

4. The circuit board is damaged

If the circuit board is damaged, it can cause the opener to malfunction and the yellow light to blink. To fix this issue, you will need to replace the circuit board.

5. The wiring is loose or damaged

If the wiring is loose or damaged, it can cause the opener to malfunction and the yellow light to blink. To fix this issue, you will need to check the wiring and make sure that it is properly connected and not damaged.

6. The remote control is not programmed

If the remote control is not programmed, it will not be able to open the door and the yellow light may blink. To fix this issue, you will need to program the remote control to the opener.

7. The batteries in the remote control are dead

If the batteries in the remote control are dead, it will not be able to open the door and the yellow light may blink. To fix this issue, you will need to replace the batteries in the remote control.

8. The receiver is not working

The receiver is the part of the opener that receives the signal from the remote control. If the receiver is not working, it will not be able to open the door and the yellow light may blink. To fix this issue, you will need to replace the receiver.

9. The antenna is damaged

The antenna is the part of the receiver that picks up the signal from the remote control. If the antenna is damaged, it will not be able to pick up the signal and the yellow light may blink. To fix this issue, you will need to replace the antenna.

If you have tried all of the above troubleshooting steps and the yellow light is still blinking, you should contact a professional garage door repair technician.