Why Won’t My Garage Door Close? 7 Common Causes
Few things are more frustrating than hitting your garage door button and watching the door start to close — only to reverse back up. Or worse, it doesn’t move at all. This is one of the most common garage door problems homeowners in Connecticut deal with, and the good news is that most causes are straightforward to diagnose.
Here are the seven most common reasons your garage door won’t close, what you can do about each one, and when it’s time to call a professional.
1. The Safety Sensors Are Blocked or Misaligned
This is the number one reason garage doors refuse to close. Every garage door manufactured after 1993 has two safety sensors — small devices mounted near the bottom of the door tracks on each side. They shoot an invisible beam across the opening. If anything breaks that beam, the door won’t close.
Check for obstructions first. A broom, a shoe, a toy, or even a cobweb can block the sensor beam. Clear anything in the path and try again.
If nothing is blocking them, the sensors may be misaligned. Look at the LED lights on each sensor. Most sensors show a solid green light when aligned and a blinking light when they’re off. If one is blinking, gently adjust it until the light goes solid. The two sensors need to point directly at each other.
Dirty lenses are another common culprit. Wipe both sensor lenses with a soft cloth — dust, dirt, and spider webs build up fast, especially in Connecticut garages that aren’t climate controlled.
If you’ve tried all of this and the sensors still won’t cooperate, the wiring or the sensors themselves may need to be replaced. That’s a job for a professional.
2. The Remote Control or Wall Button Isn’t Working
Before assuming the worst, check the simple stuff. Replace the battery in your remote. If you’re using a wall-mounted button, make sure it’s responding — try pressing and holding it. Some openers will close the door if you hold the wall button continuously, even when the sensors aren’t working, which helps you determine if the problem is the sensors or the remote.
If the remote works from close range but not from your driveway, the antenna on the opener unit might be damaged or blocked. The antenna is usually a short wire hanging from the back of the motor unit on the ceiling.
3. The Close-Limit Setting Needs Adjustment
Your garage door opener has close-limit settings that tell it how far the door should travel before it’s fully closed. If this setting is off, the opener thinks the door has hit something before it reaches the ground and reverses it as a safety measure.
This usually happens after a new opener installation or if someone bumped the settings accidentally. On most openers, there are two adjustment screws on the back or side of the unit — one for the open limit and one for the close limit. Turning the close-limit screw in small increments (usually clockwise) extends how far the door travels down.
If you’re not comfortable adjusting this yourself, a technician can dial it in quickly during a service call.
4. The Tracks Are Blocked or Damaged
Inspect the metal tracks on both sides of your garage door. Look for any debris, buildup, or objects that could be preventing the rollers from moving smoothly. Even a small rock or a bent section of track can stop the door from closing fully.
If the track is bent, don’t try to force the door. Running the door repeatedly on a damaged track can cause rollers to pop out, cables to snap, or the door to come off the tracks entirely — which is a much more expensive repair.
A bent track needs to be straightened or replaced by a professional with the right tools.
5. Broken Torsion Springs
If your garage door starts to close but feels extremely heavy, moves unevenly, or slams down hard, you may have a broken torsion spring. Springs do most of the heavy lifting — your opener motor isn’t strong enough to lift the full weight of the door on its own.
Look at the torsion spring above the door opening. If you see a visible gap or separation in the coil, the spring has snapped. Do not attempt to use the door or fix the spring yourself. Torsion springs are under extreme tension and can cause serious injuries if mishandled.
This is always a professional repair. Our technicians carry the most common spring sizes on our trucks and can usually complete the replacement in under an hour.
6. The Door Has Come Off the Tracks
If your garage door looks crooked, is hanging at an angle, or you hear grinding and scraping noises, the door may have jumped off its tracks. This can happen from impact (someone backed a car into it), worn rollers, or a broken cable on one side.
Do not try to force the door closed. An off-track door can fall unexpectedly and cause damage or injury. Disconnect the opener by pulling the red emergency release cord and leave the door in place until a technician can safely realign it.
7. The Opener Motor Has Failed
If you press the button and hear the motor humming but the door doesn’t move, the motor’s gears may have stripped. If you hear nothing at all, the motor itself may have died or there could be a power issue.
Check that the opener is plugged in and that the outlet has power (plug something else into it to test). Check your circuit breaker as well — a tripped breaker is an easy fix that gets overlooked.
If the motor runs but the door doesn’t move, the drive gear inside the opener is likely stripped. This is a common wear item, especially on chain-drive openers that are 10+ years old. Depending on the age and condition of your opener, it may make more sense to replace the entire unit rather than just the gear.
When to Call a Professional
You can safely troubleshoot sensors, remotes, and basic obstructions yourself. But anything involving springs, cables, tracks, or opener motors should be handled by a trained technician. These components are under tension or involve electrical systems that can be dangerous without proper tools and experience.
If your garage door won’t close and you can’t figure out why, call 5 Star Garage Door at (203) 693-9047. We provide same-day garage door repair across Hartford County, New Haven County, and surrounding Connecticut towns — available 24/7 for emergencies.
