Garage Door Sensors Not Staying Aligned

Now that you have made sure there are no obstructions and that both sensors are aligned properly your garage door opener should work.

Garage door sensors not staying aligned.

If the sensors are working the garage door should immediately stop closing and return to the open position. In this case you will set up the level aligned with one sensor then adjust the opposite sensor until the beam of your laser level is hitting the sensor. If the leds on both sensors glow it means they are not faulty. Proper height for a garage door sensor is 4 to 6 inches 10 2 to 15 2 cm.

On the chance that it still doesn t the problem could be the wiring. Start by inspecting the wires that are going into both of the sensors. The liftmaster garage door opener lights will flash for ten times. If the door does not close completely without hesitation.

Sometimes the sensor may be beyond repair due to wear and tear and in such a case your best bet is to replace the garage door sensor with a new one. If the door still won t stay shut double check that the sensors are aligned with each other. Connect the white wire from the sensor to the white terminal of the garage door opener and then the black and white wire to the grey terminal. Now point the safety sensors at each other.

The latest garage door sensors are technologically advanced and even allow you to control the opening and closing through an app on your smartphone. To troubleshoot your liftmaster safety sensors check if something is blocking the way of the safety sensor. Press the button that closes the garage door on the garage wall or on your remote. If you have a laser level you can use it instead of a string to align your garage door.

When the safety sensor is not properly aligned or something is obstructing the light beam the garage door will fail to close.