This page should help you troubleshoot your garage door problems.
Roller garage door problems.
If there is a gap between the garage door rollers and the rail or if the rail is not straight then you need an immediate fix.
The metal track your door runs on needs to be aligned properly in order for your door to move.
Garage door reversing before closing garage door openers manufactured after 1993 include sensors to prevent a door from closing on a child or pet.
If you garage door is lowering then reversing.
T his is a pretty uncommon problem but one that can happen after you ve first installed your garage door opener.
One of the more difficult problems for do it yourselfers to diagnose is a worn cable pulley on an extension spring door.
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.
You can carefully try and close the door with pressure on the side that is higher on the way down.
This misalignment will only get worse with repeated use as the heavy duty frame gradually dislodges them further.
While many problems that keep the door from opening are caused by broken springs a lot of other parts could be keeping your door from functioning properly.
If this happens you should be able to see the gaps.
If your garage door track is out of alignment it can be a serious issue.
The roller door shakes and shimmies going down this is generally caused by the roller door having bagged up at the top or running uneven.
If you see gaps between the rollers and rail or bends in the rails themselves you have a problem.
Generally this will need a technician to repair.
This is related to the up limit switch.