Garage Door Won't Close?
When a door creeps back up, stops short of the floor, or won't seal, the photo-eye sensors are the first suspects — and most fixes are quick.
Quick Answer
Nine times out of ten a door that won't close has a photo-eye problem: the two floor-level sensors are blocked, grimy, or no longer looking at each other, so the opener refuses to bring the door down — exactly as designed. Beyond the sensors, look to drifted travel limits, something in the tracks, or a cable or spring fault. Sensor work runs $150–$300 in Perth, and a door that can't lock the house for the night justifies an after-hours call.
Common Causes
Safety sensors blocked or misaligned
The two photo eyes at floor level need clear sight of each other; a wheelie bin, a cobweb or a nudged bracket breaks the beam.
Sunlight on a sensor
In west-facing Perth garages, late-afternoon sun can flood one photo eye and blind it — the door refuses to close until the glare passes.
Travel limits drifted
If the opener thinks 'closed' is higher than the floor, the door stops short or touches down and reverses.
Something under the door or in the track
Openers reverse the moment the door meets resistance — sweep the floor line and sight down both tracks.
Cable or spring fault
A drooping cable or weakening spring alters how much force the door needs mid-travel, and the opener's safety reverse kicks in.
Worn rollers binding
Binding rollers feel like an obstruction to the opener on the way down, so it stops and heads back up.
What You Can Check Safely
Safe to check yourself
- Wipe both photo eyes and confirm their brackets face each other squarely
- Read the sensor LEDs — steady means aligned, flashing means the beam is broken
- Clear the floor line and both tracks of anything in the way
- Try closing with the wall button held down — if the door closes that way, the sensors are your culprit
Do not attempt
- Never unplug or bridge the safety sensors to make the door close — that beam is what saves a child or pet under the door
- Don't drag the door down on the manual release if it's fighting you
- Resist turning up the opener's force settings to power through whatever is stopping it — find the cause first
When to Call a Technician
Call a technician straight away if any of the following apply:
- You've cleaned and aligned the sensors and it still won't stay down
- Each attempt stops at a different point
- Holding the wall button is the only way it fully closes
- The final stretch is a slam, or the door rebounds off the concrete
- There's slack in a cable, or the door hangs unevenly
- You need the door secured tonight and it won't close at all
Cost Guidance
| Scenario | Typical Price Range | Notes |
|---|
Exact pricing comes down to what caused the fault, the parts involved and your door’s size — we confirm the figure on site before starting, and quoting is free.
Door won't close and you're heading to bed?
Until the door closes, the house isn't locked. We can secure it tonight and sort the underlying fault — 24/7, Perth-wide.
Frequently Asked Questions
The reverse-and-reopen routine is the opener protecting you. Either the floor-level photo eyes briefly lost each other, or the door hit resistance — something in the track, dragging rollers, or force settings that need re-tuning. Sensors first: clean, align, retry. If it persists after that, the mechanics want a look.
24/7 Emergency
Garage Door Repairs Perth
Door stuck at midnight? Spring snapped on a Sunday? Call 0412 988 733 any hour, or book online in under a minute — same-day repairs right across Perth.