Garage Door Problems
My garage door starts closing, then reverses back up.
The door begins to close normally, then reverses partway down — or it touches the floor and immediately travels back up. Often the opener light flashes while it happens. Nothing is visibly blocking the doorway.
What's happening at the door
The mechanics behind it
This is the opener's safety system doing its job with bad information. Two sensors near the floor bounce an invisible beam across the opening; if they're misaligned, sun-blinded, or their lenses are dirty, the opener believes something is in the way and refuses to close. If the door reverses only after touching the floor, the travel limit is set a hair too long — the opener thinks it hit an obstacle when it actually hit the concrete — or the close-force setting is too sensitive, which winter stiffness makes worse as cold rollers and dry hinges add resistance.
Safety first
A reversing door is annoying but safe — the danger is defeating it. Don't hold the wall button down to force the door closed and walk away: that overrides the obstacle protection entirely, and a door that needs forcing has a real problem that will worsen. Check the simple things freely — sensor lights, lens dirt, anything hanging into the beam like a broom handle or cobweb.
What a service visit looks like
A technician aligns and tests the photo-eyes, sets the travel limit so the door seals without 'hitting' the floor, calibrates close force to the door's actual resistance, and services the rollers and hinges that winter stiffens. If the sensors themselves have failed — cracked lens, dead board, chewed wire — they're replaced on the same visit. Free written estimate first, always.
This is handled by our Openers & Remotes service — same-day across Connecticut.
What homeowners ask
Why does my garage door reverse only in winter?
Cold thickens grease, stiffens rollers, and adds drag. A close-force setting that was fine in summer now reads that drag as an obstruction, so the opener reverses. A seasonal tune-up with force recalibration fixes it.
One sensor light is off — what does that mean?
The beam isn't reaching it. Nine times out of ten the bracket got bumped and the eyes no longer face each other; gently realign until the light holds steady. If it won't, the sensor or its wiring needs service.
Can sunlight really stop my door from closing?
Yes — low sun shining directly into a photo-eye can blind it, typically at the same time each day. Swapping the sender and receiver sides or adding a sun shield solves it.
If this isn't quite your symptom
Ten quiet minutes of sensor work usually ends weeks of door arguments.
Need garage door help today?
Call for a straightforward appointment window and a written estimate.