A door that refuses to close is usually a safety system doing its job, not a broken door. Most of the time you can find the cause yourself in a few minutes. Work through these in order.
1. The Safety Sensors
Every opener made since 1993 has two photo-eye sensors mounted about six inches off the floor on each side of the opening. They project an invisible beam. If anything interrupts it, the door refuses to close — and if you hold the wall button down it will close but the opener will beep.
Check that both sensors show a steady light. One is usually green and one amber, and steady means aligned. A blinking or dark light means they are misaligned or blocked. A bicycle, a trash can, a bag of soil, even a spider web across the lens will do it. Wipe both lenses and gently nudge the brackets until both lights are solid.
This is the single most common cause we get called out for, and it costs nothing to fix.
2. The Track Is Blocked or the Rollers Are Worn
Look along both vertical tracks for a dent, a loose bracket, or debris. A door that stops at the same point every time is telling you exactly where the obstruction is.
3. The Travel Limits Drifted
Openers have adjustment screws or buttons that tell the motor how far to travel. If the close limit drifted, the opener thinks the door has hit the floor before it actually has, and reverses. If your door reverses about a foot from the ground with nothing in the way, this is likely it.
4. The Remote or Keypad Battery
If the wall button works but the remote does not, it is the remote. Keypad batteries in South Florida heat and humidity last about a year, sometimes less.
5. The Lock Button
Most wall consoles have a lock or vacation button. Pressed accidentally, it disables all remotes while the wall button keeps working. Look for a small lock icon or a blinking light on the console.
6. The Trolley Was Disengaged
If the motor runs but nothing moves, someone probably pulled the red emergency release cord. Reconnect by pulling the cord toward the door and running the opener until the trolley clicks back into the carriage.
7. A Broken Spring or Cable
If none of the above applies and the door is very heavy by hand, stop. Look for a gap in the spring above the door, or a cable hanging loose. This is not a DIY repair — see our guide on why springs break.
When to Stop and Call
Stop if the door is crooked, if a cable is off its drum, if the door falls when you release it, or if a spring is visibly broken. Those are load-bearing failures and a door in that state can come down.
We are open 7 AM to 11 PM seven days a week across Miami-Dade and Broward. If one of these steps solved it, no call needed — that is the point of the list.
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