As with many such problems the most common problem is the simplest one the motor unit has been unplugged.
Garage door intermittent closing.
If the remote works only when held within a few feet of the motor unit rf interference is probably the problem.
Adjust the degree of upward force which is one of the two adjustable screws on most garage door openers.
One of the lights could appear to be solid but in reality it might be barely flickering meaning the sensors are not making a good connection.
If the sensor path is blocked the garage door will not operate.
When the garage door opener works intermittently the logic board may be experiencing radio frequency rf interference from nearby sources such as security lights ham radios and some electronics.
Ensure the safety reversing sensor located right inside the garage door is connected and aligned properly if the lights on the garage door opener flash but the door will not close.
The chain may be adjusted too tight which causes binding and added load on the motor and that trips the opener to stop closing and reverse.
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.
The garage door opener detects when it is getting too difficult to raise the door and automatically shuts down.
Finally it s possible the garage door opener s motor.
See all the details in this video.
If one of the sensors gets bumped or hit slightly out of alignment it could cause intermittent issues closing your garage door.
This is almost always the result of a dirty or obstructed safety feature.
You push the button to close the garage door.
Step 2 alter the travel adjustments if the door is stopping short of the desired point on the ground.
It s also possible that the circuit breaker fuse or gfci outlet powering the door opener circuit has tripped or burned.
It goes partway down reverses direction and goes back up again.
Make sure the door is not binding anywhere in the track.
