The led light that is referred to in this article is the small light that is located on the opener near the adjustment learn or program buttons.
Garage door flashing light.
This video demonstrates what do if your garage door won t close and the lights on your liftmaster garage door opener are blinking.
If just the red source led is out unplug the mechanism check the wiring and plug it back in.
Allow the motor to cool for about 15 minutes before restoring power and using the garage door opener.
If this doesn t fix your problem then the problem is more than likely the safety reversing sensors.
If one or both of the lights are off check the fuses breakers and plugs for problems.
If you try to open your door using a remote while the lock system is engaged you ll notice that the garage door light will begin blinking continuously.
Unplug the garage door opener to reset the logic board.
To unlock your garage door opener push the lock button for 5 seconds.
Click here to learn all the facts on garage door opener flashing.
Pull the emergency door release and check the up and down travel of the garage door for binding.
Once you push this button the light on the garage door opener will flash twice.
Okay now that you know some of the common signs of garage door sensor malfunction you re ready for the next step troubleshooting.
Here s how to tell if garage door sensor is bad five things to check.
If the door closes your issue is solved.
Garage door opener light blinks led light blinking indicates a problem note.
Press the remote control.
When your garage door opener lights are blinking or flashing and your garage door does not close all the way you may have an issue with your safety sensors eyes.
When the lock button is on the garage door opener will work from the door control but the remote controls are locked out.
0 00 liftmaster garage doo.
Press the lock button to turn this feature off.
Repair the garage door if it doesn t travel smoothly.
If your door control has a lock button it may have been turned on.
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Once you see the double flash press the control button on the remote control.
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The number of flashes can help to identify the potential issue.
The light will flash two times.
If both the red source and green sensor lights are on and not blinking then the door mechanism is working properly.
If you own a new garage door opener that comes with a locking feature it s possible someone may have accidentally locked your garage door by pressing the lock button.