The blinking opener lights indicate that the safety sensors are likely blocked or out of alignment.
Garage door opener light flashes 10 times.
Garage door won t close light flashes.
Look at the led s on both door sensors.
This will explain how to troubleshoot a garage door opener that won t close the door and blinks 10 times.
The safety sensors use an invisible beam of infrared light to detect obstructions in the garage door s path.
Look up parts for your model.
There are a few things which can cause this.
Replacing the safety sensors on a garage door opener.
Anytime the main light flashes 10 times and the door reverses to the open position it is telling you there is something wrong with the door sensors.
If one or both leds is blinking the sensors are misaligned.
If the led s on both sensors are off the problem is in the logic board or the sensor wiring.
Ten flashes of the light tells you there is a problem with the door safety sensor circuit.
The table below shows how to identify the issue with the diagnostic.
If one of the leds is not on the door sensors need to be replaced.
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Perhaps the most common issue for many homeowners if the safety sensors are not properly aligned the light will blink 10 times.
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.
When the garage door does not close and the lights flashes it means the problem is with the safety sensor.
This most likely indicates that the garage door sensors are out of alignment or there is something in the way of the sensors.
Garage door openers made after 1993 are equipped with sensors positioned on both sides of the vertical rails.
If this is not the issue then your sensors will probably need to be aligned.
The light from the opener blinks 10 times to warn you about misaligned photo eyes.
With the diagnostic feature on craftsman you can know what exactly the issue is.
To fix this issue first locate the two photo eyes attached to your garage door and clean the lens using a soft microfiber cloth.
An open door will not close if the infrared beam is broken.
The led on the motor will also blink and serves as a diagnostic tool for troubleshooting.
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.
Liftmaster motors will not operate when something obstructs the infrared beam between the safety sensors at the bottom of the garage door tracks.
Tweak them a bit.
Safety sensor kit part number 41a5034.
