Garage Door Problems
My garage door reverses before closing or opens again.
The door may reverse as soon as it starts down, stop halfway, or touch the floor and immediately travel back up. Opener lights may flash, a sensor LED may flicker, or the problem may happen only at a certain time of day.
Safety references reviewed 2026-08-05.
Start here
What this symptom usually means
When a garage door reverses before closing, the opener usually sees a blocked or unstable sensor beam, mechanical resistance, or an incorrect travel endpoint. Clear and watch the sensors during movement, note where the reversal happens, and stop if the door binds or becomes crooked; do not increase force to push through it.
What's happening at the door
The mechanics behind it
A reversal is a safety response, not a random choice. The opener may see a blocked or misaligned photo-eye beam, resistance from a binding door, an incorrect travel limit, or a safety-reversal test condition. Low sunlight can also interfere with the receiving sensor on some systems.
Homeowner checks
What you can check safely
- Remove objects, cobwebs, and dirt from the sensor path and wipe both sensor lenses gently.
- Look for steady sensor LEDs and check whether a bracket was bumped or a wire was pinched.
- Notice whether the door reverses before reaching the floor or only after it touches the floor; those patterns point to different checks.
- With the door closed and stable, disconnect the opener and move the door by hand to see whether it binds at the same location.
Safety first
Do not increase opener force to overpower a sticking door. Manufacturer guidance warns that force settings must not compensate for binding because excessive force can interfere with the safety-reversal system. Do not defeat or permanently bypass the photo-eyes.
What a service visit looks like
The repair follows the pattern: align and test the sensors, inspect the sensor wiring, confirm smooth door travel by hand, then program travel or force only according to the opener's model-specific instructions. Any mechanical resistance is corrected before the opener is adjusted, and the safety-reversal system is tested afterward.
This is handled by our Garage Door Opener Repair service in the listed Connecticut communities. Call to check current availability.
Need help with this symptom?
Describe what the door is doing before the next attempt.
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What homeowners ask
Why does my garage door reverse before closing?
The opener may be seeing an interrupted photo-eye beam, unstable sensor wiring, mechanical resistance, or a travel endpoint that does not match the floor. The exact reversal point and sensor-light behavior separate those causes.
Why does the door reverse only in the morning or evening?
Low-angle sunlight can overwhelm the receiving photo-eye on some installations. The useful clue is a repeatable time of day plus a sensor light that changes when the sun reaches it.
Why does it reopen only after touching the floor?
The down-travel setting may be too long, the floor may be uneven, or the door may meet resistance at the bottom. The door and the model-specific travel setup should both be checked.
Can I just raise the close-force setting?
Not until the door is confirmed to move freely. More force can mask a binding door and weaken the protection provided by the reversal system.
If this isn't quite your symptom
- Door closes only while holding the wall button
- Garage door is crooked or uneven
- Garage door is frozen shut
- All garage door problems
A reversing opener is reporting a condition; the repair is finding which condition is real.
Safety and technical references
- Chamberlain: flashing lights and a door that will not close
- Chamberlain: testing the safety reversal system
These references support the general safety guidance above. Your door and opener model instructions control for model-specific adjustments.
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