A garage door that won’t open is one of those problems that always seems to happen at the worst possible time — when you’re running late, or when the car is stuck inside and you need to get going. Before you assume the worst, there are a handful of simple, safe checks you can run yourself. Some of them take less than a minute and can save you a service call altogether.
We’re Filip and Kelly Kulinicz, and we run Filip’s Garage Doors, a family business based in Goolwa. We look after homes right across the Fleurieu Peninsula and southern Adelaide. This guide walks you through what we’d check first, where the line is between a safe DIY check and a job for a licensed technician, and what to do if the door still won’t budge.
Start With the Simple Things
Most “my garage door won’t open” calls come down to something straightforward. Work through these in order before going any further.
- Check the power. If your opener runs on mains power, make sure it’s still plugged in and switched on at the wall. It’s common for a plug to be bumped loose or a switch to be knocked off. Check whether a circuit breaker or safety switch has tripped in your switchboard, and look for any sign of a recent power interruption.
- Try the wall button as well as the remote. If the wall-mounted button opens the door but the remote doesn’t, the problem is usually with the remote, not the door. If neither works, the issue is more likely with the opener or its power.
- Replace the remote batteries. A flat remote battery is one of the most common culprits we see. Swap in a fresh battery and try again before assuming anything is broken.
- Check you’re within range. If you’re pressing the remote from too far away, or there’s interference, the signal may not reach. Try again from closer to the door.
Check the Manual Release Cord
Most automatic garage doors have a manual release cord — usually a red handle hanging from the trolley track on the ceiling. Pulling it disconnects the door from the opener so you can lift the door by hand.
If someone has pulled this cord (children sometimes do), the opener motor will run but the door won’t move with it, because the two are no longer connected. Reconnecting it is usually a matter of pulling the cord back towards the door or running the opener until the trolley re-engages. If the door feels heavy, stiff, or won’t lift smoothly by hand once released, stop — that points to a spring or balance problem, which we cover below.
Check the Safety Sensors
Automatic doors have a pair of photo-eye safety sensors mounted low on each side of the opening, near the ground. They send an infra-red beam across the doorway so the door won’t close on a person, pet, or object. These sensors mostly affect closing, but a fault or blockage can stop the system working as it should and leave the door unresponsive.
- Look for anything blocking the beam — a bin, a box, garden tools, or even a build-up of leaves and cobwebs.
- Wipe the small lenses gently with a soft, dry cloth. Dust and dirt are common.
- Check the sensors are still pointing at each other. A knock from a car or a bumped bracket can throw them out of alignment. Many sensors have a small light that stays steady when aligned and blinks when they aren’t.
The Motor Runs but the Door Doesn’t Move
This is a specific symptom worth calling out. If you press the button and hear the motor whirring or humming but the door stays put, it usually means one of the following:
- The trolley is disengaged. The manual release cord has been pulled and the opener is no longer connected to the door (see above).
- A worn or stripped opener gear. Over time the drive gear inside some openers can wear down, so the motor turns but nothing drives the door.
- A broken spring. If a spring has snapped, the door becomes too heavy for the opener to lift, so the motor strains and the door doesn’t move.
The first one you can check yourself. The other two are repairs for a technician. If you suspect a broken spring, don’t keep pressing the button — you can damage the opener by forcing it against a door it can’t lift.
A Door That’s Come Off Its Track
If your door looks crooked, is hanging unevenly, has jumped out of the metal tracks on either side, or is jamming partway through its travel, it has likely come off track. This can happen after a knock, a worn roller, a broken cable, or a snapped spring.
An off-track door is not a DIY repair. The door is heavy and no longer properly supported, so it can fall or slip suddenly. Leave it where it is and give us a call so we can put it right safely.
A Quick Word on Safety
The simple checks above — power, batteries, the wall button, the release cord, and the sensors — are safe for any homeowner to do. But garage door springs and cables are under extreme tension. They hold the full weight of the door, and if one lets go while you’re working near it, it can cause serious injury.
Please don’t attempt to adjust, repair, or replace springs or cables yourself, and don’t try to wrestle an off-track door back into place. Those jobs need the right tools and training. That’s where a licensed technician comes in — we’re licensed builders (BLD 188 315) and we handle this work every day.
When to Call Us
If you’ve worked through the simple checks and the door still won’t open — or you’ve found something that points to a spring, cable, off-track, or opener fault — get in touch. We offer same-day service across the region where we can, and we’ll come out and have a proper look. If it’s urgent, our emergency garage door repair service can help when you’re locked out or locked in.
For a full diagnosis and repair, see our garage door repair page. We cover the whole service area across the Fleurieu Peninsula and southern Adelaide, from Victor Harbor through to the southern suburbs.
What sets us apart is simple: no call-out fee, and a no-fix-no-charge guarantee. If we can’t fix it, you don’t pay for the visit. Call us on (08) 8555 4269 for a free quote.
Frequently Asked Questions
Why does my garage door motor run but the door won’t move?
The most common reason is that the manual release cord has been pulled, disconnecting the door from the opener — reconnecting it usually fixes it. If that’s not it, the cause is often a worn opener gear or a broken spring that has left the door too heavy to lift. The last two need a technician. If you suspect a broken spring, stop using the opener so you don’t damage it.
Is it safe to open a garage door manually if it won’t open on its own?
If the door lifts smoothly and feels balanced after you pull the manual release cord, it’s fine to open it by hand. But if it feels heavy, stiff, or won’t stay open on its own, that points to a spring or balance fault — stop and call a technician, because a poorly balanced door can drop unexpectedly.
Do you charge a call-out fee to come and look at my door?
No. We don’t charge a call-out fee, and we work on a no-fix-no-charge basis — if we can’t fix your door, you don’t pay for the visit. Call us on (08) 8555 4269 for a free quote anywhere across the Fleurieu Peninsula and southern Adelaide.
