It travels 3 5 in.
Chamberlain garage door not closing 10 flashes.
The light from the opener blinks 10 times to warn you about misaligned photo eyes.
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This most likely indicates that the garage door sensors are out of alignment or there is something in the way of the sensors.
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 door is clear from obstruction.
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Garage door openers made after 1993 are equipped with sensors positioned on both sides of the vertical rails.
It flashes 10 times and the owner s manual diagnostic charts tops at 6 flashes.
My garage door opener model 139 5398500 won t close.