A garage door that won't close or reverses before it reaches the floor is usually caused by the safety sensors near the floor being blocked, dirty or misaligned. Wipe both sensor lenses, clear anything in the path, and make sure both sensor lights are steady. If it still won't close, the cause is likely the opener's settings, a track problem or a broken spring, which a technician should check.
1. Safety sensors blocked or misaligned
The two photo-eyes a few inches above the floor must see each other. A leaf, cobweb, dirty lens or bumped bracket will make the door reverse. Clean them and look for a steady light on both.
2. Something in the door's path
Check under the door and along the tracks for anything in the way, including ice at the threshold in winter.
3. Close-limit setting is off
If the door touches the floor and immediately goes back up, the opener may think it hit something. The limit and force settings need adjusting.
4. Track or roller problems
A bent track, loose bracket or broken roller can stop the door partway. If the door is crooked or rollers have popped out, stop using it.
5. Broken spring or cable
If the door is very heavy, crooked, or you heard a loud bang, a spring or cable may have failed. Don't keep running the opener.
6. Remote, keypad or lock
Weak remote batteries or a manual lock bar engaged on the door can also keep it from moving.
When to call
If cleaning the sensors and clearing the path doesn't fix it, call (816) 301-5209. Most sensor, limit and track problems are fixed on the first visit.
Need help with your door?
Call (816) 301-5209 for 24/7 emergency service, or request a free written estimate.