Garage Door Sensors Not Staying Aligned

If the leds on both sensors glow it means they are not faulty.

Garage door sensors not staying aligned.

Proper height for a garage door sensor is 4 to 6 inches 10 2 to 15 2 cm. To troubleshoot your liftmaster safety sensors check if something is blocking the way of the safety sensor. If they aren t gently bend them to restore a clear connection and secure a clean escape from your. 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 does not close completely without hesitation. 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. Press the button that closes the garage door on the garage wall or on your remote. The liftmaster garage door opener lights will flash for ten times.

If the door still won t stay shut double check that the sensors are aligned with each other. Start by inspecting the wires that are going into both of the sensors. Instead your pre wire is broken and you need to get it replaced. 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 you have a laser level you can use it instead of a string to align your garage door. On the chance that it still doesn t the problem could be the wiring. If the sensors are working the garage door should immediately stop closing and return to the open position. Now point the safety sensors at each other.

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