This is most likely the reason a garage door won t close.
Garage door opener malfunctioning.
Okay now that you know some of the common signs of garage door sensor malfunction you re ready for the next step troubleshooting.
The most obvious solution to the problem may be.
5 typical malfunctions with garage door openers 1 the door does not move when you press the remote if you have two remotes try the other one.
As with many such problems the most common problem is the simplest one the motor unit has been unplugged.
Here s how to tell if garage door sensor is bad five things to check.
This is related to the up limit switch.
The photo eyes.
Misaligned photo eyes are another reason for malfunctioning garage door sensors.
It s important to get this switch at just the right distance from the motor so that the door is able to close all the way but the motor also knows to stop running.
Try these two ways to fix your garage door opener sensors.
Try making small adjustments.
Other signs include flashing garage door opener lights missing sensor light or flashing sensor lights.
It s also possible that the circuit breaker fuse or gfci outlet powering the door opener circuit has tripped or burned.
T his is a pretty uncommon problem but one that can happen after you ve first installed your garage door opener.