A roller shutter that stops responding to the close button is usually caused by track obstructions, sensor faults, worn springs, or limit switch problems.
You press the button and the shutter starts moving down, then stops halfway. Or it does not respond at all. A roller shutter stuck open is a security problem you want solved quickly.
This guide covers the most common reasons a roller shutter won't close and what to check before calling a technician. If your roller shutter won't go up instead, that guide covers the reverse problem.
Need it fixed now? Contact Fix My Shutters for same-day emergency repairs across Sydney. If your roller shutter won't stay down after closing, we fix that too.
The most common reason a roller shutter won't close is something physically blocking the tracks. Dirt, leaves, small stones, or dried lubricant can stop the shutter from travelling all the way down. In coastal Sydney suburbs, salt spray corrosion on guide rails is another frequent cause.
Run your hand along both guide rails from top to bottom, feeling for anything that sticks out or creates resistance. If you have window roller shutters that aren't working, this is the first thing to check.
Common track obstructions include:
Clean the tracks with a stiff brush, wipe them down, and apply a silicone-based spray lubricant. Do not use WD-40 or oil-based lubricants. They attract dust and make the problem worse within weeks.
If the guide rails have shifted from an impact, poor installation, or ground movement, the shutter curtain cannot travel straight. You will usually see the shutter leaning to one side or hear scraping as it moves.
Repairing damaged roller shutter tracks requires a technician to realign and resecure the rails. If your roller shutter shakes in the wind, the fixings may need attention before it stops closing altogether.
A shutter that starts closing but stops partway down usually has a sensor or limit switch issue. Electric roller shutters use limit switches to tell the motor where the fully open and fully closed positions are.
If the limit switch for the closed position has shifted, the motor thinks the shutter is already at the bottom and stops early. This happens as the shutter stretches slightly or the switch mechanism wears.
| Symptom | Likely Cause | DIY or Professional |
|---|---|---|
| Stops at the same spot every time | Limit switch needs adjusting | Professional |
| Stops at random positions | Motor overheating or electrical fault | Professional |
| Stops and reverses back up | Safety sensor detecting an obstruction | Check sensors first (DIY), then professional |
| Stops with a grinding noise | Slat damage or track misalignment | Professional |
| Stops and the motor keeps running | Slat jammed or disconnected from barrel | Professional |
| Stops with visible gap on one side | Track misalignment from impact or settling | Professional |
| Won't close fully on a manual shutter | Worn or broken spring | Professional |
If your shutter stops at the same point every time, the limit switch needs recalibrating. For a full walkthrough, read our guide on fixing a roller shutter stuck halfway.
Most modern electric roller shutters with motorised controls have safety sensors at the base that detect obstructions. If the sensor thinks something is in the way, the shutter will refuse to close or reverse when it meets resistance.
These sensors get dirty, misaligned, or damaged over time. Direct sun can also cause false readings.
To check the sensors:
If cleaning and realigning does not fix the problem, the sensor needs replacing. Fix My Shutters carries replacement sensors for all major brands.
Before assuming the worst, check the basics. A roller shutter that won't respond at all often has a simple power issue.
Quick power checks:
If the motor hums but the shutter does not move, stop pressing the button. Running a motor against a jam can burn it out. Call a technician before the motor is damaged beyond repair.
If none of these checks help, read the signs your roller shutter motor needs repair. You can also try resetting the roller shutter motor to clear electronic faults.
Roller shutter curtains are made of interlocking aluminium slats. If one or more slats are bent, cracked, or disconnected, the curtain cannot travel smoothly. Damaged slats often cause a clicking noise as the shutter moves.
Bent slats are common after storms, break-in attempts, or accidental impacts. Even a minor bend on one slat can jam the entire curtain partway down.
Signs of slat damage:
Individual slats can be replaced without replacing the entire curtain. Our guide on how to replace roller shutter slats covers the process. Fix My Shutters keeps common slat profiles in stock.
Manual roller shutters and some older motorised models use springs to assist the curtain. When springs lose tension or snap, the shutter becomes too heavy to close or drops too fast and jams.
Signs of a spring problem:
Adjusting spring tension on manual roller shutters is technically possible but dangerous. Springs store significant energy and can cause serious injury if released unexpectedly.
Safe Work Australia classifies stored-energy mechanisms as a workplace hazard. Have a technician inspect and replace worn springs before the damage spreads to the barrel and axle.
If the motor is not working and you need the shutter closed now, most electric roller shutters have a manual override: a hand crank, pull strap, or release mechanism that disconnects the motor.
To manually close your roller shutter:
If the override does not work or the shutter will not move by hand, do not force it. Forcing a jammed shutter can snap the axle or tear slats from the guide rails, causing a noisy roller shutter problem on top of the original fault.
Most roller shutter closing problems are preventable with basic maintenance a few times a year.
Our guide to roller shutter maintenance tips that actually work has a complete seasonal schedule. Find out how long roller shutters last with proper care.
If the roller shutter still won't close after checking tracks, sensors, power, and remote, the fault is internal. Motor failures, broken springs, stripped gears, and wiring faults all need a technician.
Call a professional if:
Make sure any tradesperson you hire holds a valid licence. You can verify this through NSW Fair Trading.
Fix My Shutters provides roller shutter repairs across Sydney with same-day emergency call-outs. With 15+ years of experience and parts in stock for all major brands, most repairs are completed in a single visit.
Usually a misaligned limit switch telling the motor the shutter is already at the bottom. Track obstructions and overheating motors can also cause mid-travel stops.
Some causes are safe to fix at home: cleaning debris from tracks, replacing remote batteries, and wiping dirty sensors. Anything involving the motor, springs, or wiring should be left to a technician.
Costs range from a straightforward track clean at the lower end to motor or spring replacements at the higher end. Contact Fix My Shutters for a free assessment.
The safety sensor at the base is detecting an obstruction. Clean both sensor faces, check alignment, and remove anything nearby. If it still reverses, the sensor needs replacing.
A humming motor with no movement has a mechanical jam or stripped gears. No sound at all points to an electrical fault or blown capacitor.
At minimum, once a year. Homes in coastal areas or regions with heavy dust and storms benefit from servicing every six months.
