They are misaligned this is the most likely problem and the most common issue with garage door openers.
Garage door closes then reopens problem.
My garage door has two sensors either of which can cause the door to open immediately after apparently closing.
An optical sensor that detects if an object is obstructing a.
If the garage door does not close completely or begins to close and then opens back up again the down limit switch needs.
It goes partway down reverses direction and goes back up again.
If it closes only partway the safety sensors are usually responsible clean the lenses or realign them and make sure there are no obstacles blocking the beam.
If the track appears to be clean and well aligned then the problem could be with broken or rusty rollers.
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.
The sensors are dirty wipe lenses with a clean soft cloth.
If the door closes while holding the button pressed you are likely having one of the following issues with your safety sensors.
A force sensitive switch that detects if the motor torque is excessive typically tripped by incorrect adjustment or by.
Replace them if needed or.
You push the button to close the garage door.
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 changes in weather conditions can causes your garage door components to shift or contract.
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.
Your garage door is programmed to travel a certain distance before it closes.
This is almost always the result of a dirty or obstructed safety feature.
Close the garage door with the opener and watch it closely as it closes.