An optical sensor that detects if an object is obstructing a.
Garage door closes then reopens problem.
If your garage door won t open or close the problem could be a bent track a broken torsion spring or a bad capacitor int he motor housing.
The door sticks while closing or opening check the tracks to confirm they are clean and free of debris that can get in the way of the rollers and make them stop.
When a garage door descends on command but then immediately reverses itself the problem is usually with the sensor eyes along the side tracks or with the door s wheels binding in their tracks.
But when the door begins to descend all on its own the problem may point to the opener s logic board or the circuitry inside the motor unit itself.
Close the garage door with the opener and watch it closely as it closes.
You push the button to close the garage door.
Replace them if needed or.
If the garage door does not close completely or begins to close and then opens back up again the down limit switch needs.
They are misaligned this is the most likely problem and the most common issue with garage door openers.
A force sensitive switch that detects if the motor torque is excessive typically tripped by incorrect adjustment or by.
Your garage door is programmed to travel a certain distance before it closes.
If the track appears to be clean and well aligned then the problem could be with broken or rusty rollers.
The sensors are dirty wipe lenses with a clean soft cloth.
It goes partway down reverses direction and goes back up again.
If the door closes while holding the button pressed you are likely having one of the following issues with your safety sensors.
If it closes before that distance has been traveled it thinks something is wrong and it reopens to help prevent any damage or safety risk.
This is almost always the result of a dirty or obstructed safety feature.
The solution is usually one or more of the following.