Garage Door Will Not Close in Marietta, GA Diagnosed in Order

Check the free things first, in this order

Before anything is unbolted, work through four items. Confirm the slide lock or T-handle on the door is not engaged, since a lock left thrown is the single most common cause and the one that damages a section when the opener pulls against it. Check the vacation or lock switch on the wall control, which disables remotes and looks identical to a dead receiver. Look for a bag, a bin or a hose lying across the beam path. Then watch the door itself rather than the opener, because what happens in the last foot of travel names the fault. The other repair categories that these steps rule out are listed on the services index.

Reversal within two seconds is a legal requirement

Federal rule 16 CFR 1211 requires a residential door moving downward to begin reversing within two seconds of contacting an obstruction and then return to fully open. That is why the behavior looks so decisive: the door does not hesitate or grind, it simply goes back up. An operator doing this is reporting a condition, not failing. So the useful question is what it is sensing, and there are only three broad answers: the beam is interrupted, the travel limit is set past the floor, or the door is meeting real resistance on the way down.

Limits, and a floor that is not where the opener thinks it is

Every operator stores a close limit, and if that limit sits below the slab the door lands, keeps driving, senses resistance and reverses. This is what happens after somebody adjusts a bottom seal, replaces a door, or repairs a slab edge. The tell is a door that reverses only after it touches the ground, with a slight bump at the bottom. It is a setting on the head, not a part, and it takes minutes. A door that instead stops one to two feet up and reverses cleanly is nearly always the beam.

Sloped lots, standing water and a section that swelled

Where this becomes local is at the threshold. Frasier Park and the older streets around it are graded lots on Piedmont clay, and a garage sitting at the low end of a drive takes the runoff from fifty to fifty-five inches of annual rain. The bottom section absorbs that. A wood or wood-clad bottom rail swells against the jamb, a rubber seal grows sticky with grit, and the door meets resistance in the final inches, which the operator reads exactly as an obstruction. In winter the same threshold gives trouble differently: with fifty to seventy nights a year at or below freezing here, water in the seal profile can freeze it to the slab overnight, and the operator's reversal is the only thing preventing a torn seal.

Frayed cable, loose spring, unequal lift

Two mechanical faults produce a reversal with no obstruction in sight. A lift cable that has begun to unwind at the drum lets one side drop faster than the other, so the door racks in the opening and binds at the rail. A weakening spring changes the balance, and the door becomes heavy enough on the down cycle to drag. Both are visible: loose cable coiled at a jamb, a gap in a torsion coil above the header, or a door that will not hold at waist height with the operator disconnected. If any of that appears, stop and treat it as a counterbalance repair.

What not to do, and what a visit covers

Do not raise the close force setting to push the door through. That is the safety margin that caught the fault, and spending it makes an obstruction case out of a maintenance case. Do not hold the wall button down to force the close on a door that is binding. A visit starts with the beam and the brackets, which are covered in detail under photo-eye repair, then the limits, then the door off the operator and lifted by hand to find the resistance directly. Nothing about the force setting changes until the mechanical cause is named.