Few things are more frustrating than a garage door that opens fine but will not close. The good news is that most causes are straightforward, and some you can check yourself before scheduling a service call.
1. The Safety Sensors Are Blocked or Misaligned
This is the most common reason a garage door refuses to close. Every automatic garage door has two photo-eye sensors mounted near the bottom of the door frame, about six inches off the ground. They project an invisible infrared beam across the opening — if anything breaks that beam, the door will not close.
- Check for obstructions: A broom handle, a leaf, a spiderweb, or even direct sunlight can trigger the sensor.
- Check the indicator lights: Most sensors have a small LED. If one is off or blinking, that sensor is not receiving the beam.
- Gently realign: The sensors are mounted on brackets that can shift from vibration or a bump. Loosen the wing nut, aim the sensor until the LED goes solid, and retighten.
2. The Close-Limit Setting Is Off
Your opener has a setting that tells the door how far to travel before it considers itself "closed." If this setting is wrong, the door may reverse immediately after touching the ground because the opener thinks it has hit an obstruction.
On most openers, the limit adjustment is a small screw or dial on the back or side of the motor unit. Turning it slightly increases or decreases the travel distance.
3. The Remote or Wall Button Is Stuck
If the wall-mounted button or a remote has a stuck contact, it can send a signal that conflicts with the close command. Try disconnecting the wall button wires from the opener — if the door closes normally with the remote after that, the wall button needs replacement.
4. The Track Is Obstructed or Damaged
Run your eye along both tracks from the floor to the ceiling. Look for dents, debris, or sections where the track has pulled away from the wall. Even a small bend can prevent the rollers from passing smoothly, causing the opener to reverse.
5. The Door Is Frozen to the Ground
In Monroe County winters, water can pool under the bottom seal and freeze overnight, bonding the door to the concrete. Do not force it — gently break the ice seal with a flat shovel or pour warm water along the bottom edge. Forcing a frozen door can strip the gears in your opener.
6. The Opener Is in Lock Mode
Some openers have a lock feature that disables remote operation for security. If your wall button has a lock icon or switch, check that it is not engaged. The door will not respond to remotes when locked, though it should still work from the wall button.
When to Call a Professional
If none of these checks solve the problem, the issue may be a failing logic board, worn gear assembly, or a wiring fault inside the opener. These are not safe to diagnose without training and the right tools.
Call or text 585-820-6559 for a free assessment.