![]() Since the blinking can mean one of four sensor-related problems, we recommend checking the LED indicator or up-down arrow buttons on your motor unit for a more specific diagnosis. If these sensors are misaligned, damaged, blocked, or have a wiring problem, the garage door will not close, and the opener will blink ten times. Modern garage door openers have two sensors installed on each side of the door to detect the presence of objects, people, and pets in the doorway and prevent accidents. When the unit flashes ten times, it usually symbolizes a security sensor problem. The two bulbs will blink simultaneously to send an error code when activated, producing single flashes through the cover. ![]() Your LiftMaster garage door opener will likely have a light bulb on each side. When you notice the opener flashing continuously, locate the lock button on your garage door remote and press and hold it down for about two seconds.ĭoing this will disengage the lock and allow the remote control to resume opening and closing the garage door. But you can still use the wall control button or manual keypad to operate your garage door. So if you see this code, your remote will not open the door. When this lock is engaged, the light bulbs on your opener will continuously flash if you attempt to open the door with the remote. The remotes have a built-in lock feature that you can engage to prevent the device from opening and closing your garage door. Your Liftmaster garage door opener comes with remotes that you can program not to open the door for security purposes.
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