Liftmaster Garage Door Reverses After Closing

Liftmaster motors will not operate when something obstructs the infrared beam between the safety sensors at the bottom of the garage door tracks.

Liftmaster garage door reverses after closing.

We design and engineer residential garage door openers commercial door operators and gate entry systems. When the garage door opens about halfway or 5 feet from the ground and stops the up limit switch needs to be adjusted. Review adjustment step 2. 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.

Troubleshooting a liftmaster opener with a flashing light involves inspection of the safety reverse sensing system. I have a steady amber and green indicating light on my sensors. This is a safety feature that has been added to garage door openers to help prevent the door from closing on a car pet or even a child. My door will not close and the light bulbs blink.

An open door will not close if the infrared beam is broken. The photo eyes send an infrared beam across the bottom of your garage door opening if that beam is broken the door will reverse. My door willnt close all the way it reverses and opens. 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.

In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor. You push the button to close the garage door. It goes partway down reverses direction and goes back up again. I even tried holding the door push button down in the closed position.

Chamberlain group cgi the corporate parent company to liftmaster chamberlain merlin and grifco is a global leader in access solutions and products. This brain can wear out in time so you could need a replacement. When the logic board wears out it can cause your garage door to close then open and vice versa without explanation. Repeat safety reverse test after adjustments.

The safety reversing sensor must be connected and aligned correctly before the garage door opener will move in the down direction. It still would open. If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch. Verify the safety sensors are properly installed aligned and free of any obstructions.

Your garage door s logic board is the brain of your garage door opener. This is almost always the result of a. Open the garage door and watch it closely as it opens.