Something is blocking the beam either the sender or receiver is misaligned kicked.
Garage door won t go down but will go up.
But it s all good because the door still opens.
Garage door won t go up.
Above almost all sectional garage door there are one or more springs.
If this is your situation the first thing you ll want to do is make sure these sensors are properly lined up.
Can you see about a 2 gap somewhere in any of the springs.
They both have lights and both lights should be on.
First thing to do.
You have a broken spring.
Dirt and rust in the roller bearings follow making the door stiffer.
It could also be caused by a buildup of debris on the tracks that prevents the rollers from moving forward.
Yes there is a problem with the photoelectric eyes.
When you pressed the button did the opener lights blink at you.
That eats the bearings and the wheels get wobbly.
There is one on each side of the door.
If the door goes up but you can t make it go down you probably need to adjust the sensors.
If any of these sensors should happen to get bumped or misaligned the infra red beam would be thrown off and the garage door won t go down.
They start crabbing up the track gouging the track hanging up on track bolts and bending the hinges.
Can you hold the button down to make the door go down.