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Garage door chain working but will not close.
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.
In most cases the cause will be a stripped gear or a chain that has come off the sprocket.
Clutter or obstructions that block the sensor are the first problems to look for if your door won t close or in extreme cases open at all.
If something is blocking the safety beam then the garage door will not close.
Most garage doors have an emergency release typically a red pull cord that allows the door to be opened and closed manually.
The majority of garage doors manufactured since the early 1990s are equipped with this safety feature.
There s something wrong with the garage door opener that s stopping it from opening the door for you.
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.
The motor will run but will not move the chain.
Another thing that can prevent your garage door from closing are obstructions that are blocking the lenses.
Like mentioned above there are two lenses one on each side.
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.
First check the sensor lights.
Depending on the brand.
When the cord is pulled the motor is disengaged from the chain.
Press the remote or the wall mounted start switch listen to the motor and watch the movement of the chain.