At times the garage door opener can malfunction and the garage door will not open or close.
Garage door will not close light flashes 10 times.
The blinking opener lights indicate that the safety sensors are likely blocked or out of alignment.
Ten flashes of the light tells you there is a problem with the door safety sensor circuit.
When the lock button is on the garage door opener will work from the door control but the remote controls are locked out.
If you push the garage door opener switch when the sensors are obstructed or not aligned properly your garage door will reverse and the lights will blink 10 times.
If this is not the issue then your sensors will probably need to be aligned.
If the led s on both sensors are off the problem is in the logic board or the sensor wiring.
Garage door openers made after 1993 are equipped with sensors positioned on both sides of the vertical rails.
An open door will not close if the infrared beam is broken.
To fix this issue first locate the two photo eyes attached to your garage door and clean the lens using a soft microfiber cloth.
The led on the motor will also blink and serves as a diagnostic tool for troubleshooting.
If you notice this happen start by seeing if anything is obstructing the sensors field of view.
If one of the leds is not on the door sensors need to be replaced.
Liftmaster motors will not operate when something obstructs the infrared beam between the safety sensors at the bottom of the garage door tracks.
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They work by sending and receiving an invisible infrared beam.
Press the lock button to turn this feature off.
The safety sensors use an invisible beam of infrared light to detect obstructions in the garage door s path.
Counting the number of times this light flashes will allow you to know the exact fault.
Perhaps the most common issue for many homeowners if the safety sensors are not properly aligned the light will blink 10 times.
Look at the led s on both door sensors.
This most likely indicates that the garage door sensors are out of alignment or there is something in the way of the sensors.
The opener can self diagnose any issues.
The main light will blink 10 times indicating a problem.
Defective safety sensors or faulty sensor wiring also cause the opener lights to blink 10 times.
The light will flash two times.
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If your door control has a lock button it may have been turned on.
If one or both leds is blinking the sensors are misaligned.
The light from the opener blinks 10 times to warn you about misaligned photo eyes.