Why Your Garage Door Goes Up but Won't Come Down
You hit the button, the motor hums, and... nothing. Or maybe the door starts to close and immediately reverses. This is one of the most common garage door complaints we hear from homeowners across Raleigh, and the good news is that it usually comes down to one of a handful of causes.
Before you assume the worst, take ten minutes to run through this checklist. Most of these you can diagnose yourself, even if you end up needing a professional for the actual fix.
Check the Safety Sensors First
Every garage door made after 1993 has a pair of photo-eye sensors mounted near the bottom of the door tracks, about six inches off the ground. These sensors shoot an invisible beam across the opening. If something breaks that beam. a trash can, a bike, a leaf. the door won't close.
Here's what to check:
- Make sure nothing is physically blocking the path between the two sensors
- Look at the indicator lights on each sensor. Both should be lit. one green, one amber on most models. If one is out or flickering, the sensor is misaligned
- Wipe the lens with a dry cloth. Raleigh pollen season can coat them in a fine yellow layer that blocks the beam
- Check whether the sun is hitting one of the sensors directly. Afternoon sun in neighborhoods like those in Cary and Apex can overwhelm the sensor
If both lights are solid and nothing is in the way, the sensors probably aren't your problem.
Inspect the Tracks and Rollers
Garage door tracks can collect debris, especially during fall when leaves blow into garages across Raleigh neighborhoods. A small rock, a clump of dirt, or even a bent section of track can prevent the door from traveling all the way down.
Run your hand along both tracks (with the door open and the opener disconnected from power). Feel for dents, bends, or obstructions. If the track is bent, don't try to hammer it back into shape. that usually makes things worse.
Rollers can also wear out. If you see cracked, chipped, or frozen rollers, they need replacing. Nylon rollers last longer and run quieter than steel ones, which is worth knowing if you live in a neighborhood in Garner or Knightdale where houses are close together.
Look at the Limit Settings
Your garage door opener has limit settings that tell it how far the door should travel in each direction. If the close limit is set incorrectly, the opener thinks the door has hit something and reverses.
On most chain-drive and belt-drive openers, these are small adjustment screws on the back or side of the motor unit. Turning the "down" limit screw clockwise typically extends how far the door travels. Make small adjustments. a quarter turn at a time. and test after each one.
If you have a newer smart opener, the limit settings might be accessible through the opener's app or a wall-mounted control panel.
Spring and Cable Problems
If the door feels abnormally heavy when you try to close it by hand (with the opener disengaged), the springs might be losing tension or one might be broken. A garage door with failing springs puts enormous strain on the opener and can trigger the auto-reverse.
Look at the springs above the door. Torsion springs run along a metal shaft above the opening. If you see a visible gap in the coil, the spring is broken. Do not attempt to fix this yourself. torsion springs are under extreme tension and can cause serious injury.
Cable issues can cause similar symptoms. If a cable has come off its drum or is frayed, the door won't track evenly and the opener may refuse to close it. Homeowners in garage door repair in Cary and garage door repair in Apex deal with this frequently, especially in older homes.
The Remote and Wall Button
Sometimes the issue is simpler than you think. If your wall button works but the remote doesn't, replace the remote battery first. If neither works, check for a locked-out opener. some models have a lock button on the wall panel that disables remote operation.
Also check whether the antenna wire hanging from the opener unit is intact and not coiled up. A damaged antenna reduces range dramatically.
Weather and Temperature Factors
Raleigh's climate swings from humid summers to cold winters, and both extremes affect garage doors. In winter, metal tracks contract and lubricant thickens. The weatherstripping along the bottom of the door can freeze to the concrete floor overnight.
If your door won't close on a cold morning, try running the opener a few times in quick succession. sometimes the motor just needs to warm up. If the bottom seal is frozen to the floor, pour warm (not boiling) water along the base to release it.
During summer humidity, wood garage doors can swell, making the fit tighter. This added friction can trick the opener into thinking there's an obstruction.
When to Call a Professional
You should call a professional if:
- A spring is visibly broken or the door feels extremely heavy
- The tracks are badly bent or separated from the wall
- You smell burning from the opener motor
- The door closes unevenly (one side lower than the other)
- You've tried everything above and the door still won't close
Most garage door repairs in Raleigh can be completed same-day. A technician can diagnose the issue in minutes and usually has the parts on hand.
Keep It Maintained
A garage door that won't close today was probably showing signs of trouble weeks ago. grinding noises, slow operation, or jerky movement. An annual tune-up catches these problems before they strand your car in the garage.
If you're in Raleigh or garage door repair in Garner, request a free quote to get started.