The photo eye components consist of two pieces that align face to face across each side of the garage door roughly four feet above the ground.
Garage door chain working but will not close.
Press the remote or the wall mounted start switch listen to the motor and watch the movement of the chain.
In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor.
Like mentioned above there are two lenses one on each side.
In most cases the cause will be a stripped gear or a chain that has come off the sprocket.
First check the sensor lights.
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When the cord is pulled the motor is disengaged from the chain.
If your garage door won t close all the way the problem could be due to a blocked photo eye.
The motor will run but will not move the chain.
Most garage doors have an emergency release typically a red pull cord that allows the door to be opened and closed manually.
If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch.
Depending on the brand.
If this is the case the motor will run but as the chain isn t where it should be it can t generate the lift to open the door.
There s something wrong with the garage door opener that s stopping it from opening the door for you.
Another thing that can prevent your garage door from closing are obstructions that are blocking the lenses.
The majority of garage doors manufactured since the early 1990s are equipped with this safety feature.