Repair & Troubleshooting
Start with the safety sensors near the bottom of the track — misalignment, a dirty lens, or anything blocking the beam is the single most common cause of a door that won't close, especially if the door starts closing and then reverses. If the sensors check out, the list below covers the rest.
By far the most common cause. The two small sensor units near the bottom of the track need to be aligned exactly with each other and free of any obstruction. Check that both indicator lights are solid (not blinking), clean the lenses, and make sure nothing — a stored item, a pet, even a spider web — is breaking the beam.
If the lenses are clean and aligned but the light still won't go solid, check the wiring for damage — a nicked wire from a lawn trimmer or a loose connection at the sensor or opener unit can cause the same symptom as misalignment.
Debris, a stray toy, or anything physically in the door's path along the track will trigger the safety reversal even if the sensors themselves are working perfectly. Walk the full length of both tracks and clear anything in the way.
Openers have adjustable travel limits and force settings that tell the unit how far to travel and how much resistance to push through before reversing. If these are set incorrectly — common after a DIY adjustment or a battery replacement that reset settings — the door may stop short or reverse before fully closing.
A bent track, worn rollers, or a spring that's losing tension can all cause the door to bind partway through its travel, which the opener interprets as resistance and reverses to avoid forcing the door further.
If the door won't respond to the command to close at all (rather than starting and reversing), check whether the wall control works when the remote doesn't, or vice versa — that narrows down whether the issue is the transmitter or the opener's receiver.
Less common, but a failing circuit board or motor can also prevent the door from completing a close cycle. This is usually accompanied by other symptoms — inconsistent response, unusual sounds, or intermittent operation.
If your door won't close, don't disable or bypass the safety sensors to force it — that removes a genuine safety feature. Work through the list above starting with the sensors, since that resolves the large majority of these calls. If it's still not closing after checking sensors, obstructions, and wiring, it's worth having it professionally diagnosed. See our sensor repair page or call for same-day service.
This is the classic signature of a safety sensor problem — misalignment, an obstruction, or a dirty lens. The opener is doing exactly what it's designed to do when it can't confirm a clear path.
Not as a long-term solution — that leaves the door dependent on something staying in place, which isn't secure. Get the underlying issue diagnosed rather than working around it.
Indirectly, yes — cold can stiffen grease and hardware, occasionally affecting how smoothly the door travels through its limit settings, which can trigger a reversal on marginal settings.
Tell us what's going on and we'll call you back to confirm a time. For anything urgent, call 317-509-9873 directly.
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