The next most common garage door problem is the exact opposite of the first problem – your garage door refuses to close completely. Well, there are mainly three reasons why this happens.
For starters, there could be an issue with the close-limit switch. The close-limit switch is a feature that tells the motor when to stop running.
This applies to both, open and closing functions. So, a garage door’s refusal to go all the way down might be indicative of a problem with the close-limit switch. If the switch is set wrong, it may stop the door from closing.
In fact, it can even end up reversing the door if an attempt is made to close the door manually.
Close-limit switches are primarily a safety measure. They prevent the doors from closing on people, which helps avoid dangerous situations.
They are very important safety devices. So, all you have to do is adjust the limit switch to restore the door’s original functions.
The adjustment limit can be set using different methods. However, for most close-limit switches, there’s a screw feature that needs to be turned.
If the source of the problem isn’t the close-limit switch, it’s likely the safety sensors. These sensors are placed on both sides of the door track, at the bottom.
The sensors have sightlines and they have to be clear for the garage door to function accurately.
However, if the sightline has been blocked, your sensors will fail to respond, causing the garage doors to close partially.
The same can occur if the brackets holding the sensors are not aligned. If this is the issue, your garage door will stop halfway or return to the open position.
So, make sure the sightlines are cleared. It’s quite possible that there may be some kind of debris blocking the sightlines.
If the issue occurs frequently, the door’s vibrations may be causing the brackets to become loose.
If the sensors aren’t the source of your problem, then it’s likely that the rollers may be damaged or rusted, causing the door to bind.
The solution is to either replace the rollers or lubricate them. In some cases, the tracks may get bent or shift, which can also cause the door to close improperly.
As you may have noticed, fixing sensors or tracks can be complex. So, it would be much wiser to hand over the job to a professional garage door repair service.