This will explain how to troubleshoot a garage door opener that won t close the door and blinks 10 times.
Garage door opener light flashes 10 times.
This most likely indicates that the garage door sensors are out of alignment or there is something in the way of the sensors.
The light from the opener blinks 10 times to warn you about misaligned photo eyes.
If one or both leds is blinking the sensors are misaligned.
The led on the motor will also blink and serves as a diagnostic tool for troubleshooting.
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Liftmaster motors will not operate when something obstructs the infrared beam between the safety sensors at the bottom of the garage door tracks.
Make sure they are pointed at one another and the small light on each one is lit and not flickering.
Garage door won t close light flashes.
The safety sensors use an invisible beam of infrared light to detect obstructions in the garage door s path.
The table below shows how to identify the issue with the diagnostic.
If this is not the issue then your sensors will probably need to be aligned.
The main light will blink 10 times indicating a problem.
Replacing the safety sensors on a garage door opener.
With the diagnostic feature on craftsman you can know what exactly the issue is.
Tweak them a bit.
When the garage door does not close and the lights flashes it means the problem is with the safety sensor.
There are a few things which can cause this.
Safety sensor kit part number 41a5034.
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.
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.
Defective safety sensors or faulty sensor wiring also cause the opener lights to blink 10 times.
Garage door openers made after 1993 are equipped with sensors positioned on both sides of the vertical rails.
Look at the led s on both door sensors.
If you cannot get both lights to come on you have bad sensors.
If the led s on both sensors are off the problem is in the logic board or the sensor wiring.
The blinking opener lights indicate that the safety sensors are likely blocked or out of alignment.
If you notice this happen start by seeing if anything is obstructing the sensors field of view.
An open door will not close if the infrared beam is broken.
Look up parts for your model.
Ten flashes of the light tells you there is a problem with the door safety sensor circuit.
