It's a classic garage door complaint: the door travels down like normal, hits the floor, and immediately reverses back open. The opener is doing exactly what its safety system tells it to — reversing when it senses resistance. The question is why it thinks the floor is an obstruction. The good news is that the most common causes are quick to check.
Start with the photo-eye sensors
The photo-eye sensors sit a few inches off the floor on each side of the opening, and they're designed to reverse the door if anything breaks the beam. If the lenses are dirty, misaligned, or blocked by a leaf or a stored box, the opener won't let the door stay closed and will reverse it partway down or right at the floor.
Wipe both lenses with a soft cloth, check that the indicator LEDs are lit and steady, and make sure nothing is sitting in the beam path. If one sensor got bumped, gently adjust it until both LEDs stay solid.
Check the down-close force setting
Openers also reverse if the motor senses too much resistance while closing — this is the close-force setting, and it's a separate safety feature from the photo-eyes. If the door meets the floor with slightly more force than the limit allows, the opener treats it like an obstruction and reverses. The close-force can drift, or need adjusting after a new seal or weatherstrip is added.
On some openers this is a screw on the motor head; on newer units it auto-calibrates. Never crank the force up dramatically to mask the problem — if the door is suddenly hard to close, something physical is causing it.
Look at the close-limit setting
If the close-limit tells the motor to stop just past the floor, the door will press into the concrete, build resistance, and trigger the reversal. The fix is to adjust the close-limit so the door stops exactly at the floor. This is a common cause when the door reverses specifically right as it reaches the ground.
Inspect the bottom seal and floor
A new, bulky bottom weatherstrip, a buildup of debris, or an uneven floor can make the door contact the ground harder than the opener expects. Sweep the floor under the door and check the bottom seal for bunching. If the garage floor is cracked or uneven where the door lands, a technician can adjust the limit to match the surface.
When to call a pro
If cleaning and aligning the sensors doesn't fix it, and you're not comfortable adjusting the force or limit settings, a technician can recalibrate the opener's safety system properly. It's important to get this right — the reversal is a critical safety feature, and disabling or over-tightening it can create a real hazard.
Frequently Asked Questions
No. The photo-eye sensors are a federally required safety feature that prevents the door from closing on a person, pet, or object. Disabling them is dangerous and illegal. If the door won't close, the correct fix is to realign the sensors or correct the force/limit settings.
Written by
Clint Fields
Clint Fields is the owner and lead technician at Door Fellas Garage Door Service in New Orleans. He works hands-on with garage doors across the Greater New Orleans area every day — from torsion spring replacement and opener installation to routine maintenance and emergency repairs — and writes these guides to help homeowners understand their doors and know when it's time to call a professional.
Talk to Clint's team — +15042520233Last reviewed October 16, 2026
