Many common garage door problems, such as a door that won't respond to the remote, closes then reverses, or stops part-way, have simple causes you can check safely yourself: remote batteries, power to the motor, blocked or misaligned photocells, the manual release, or debris in the tracks. If those checks don't solve it, or you see a broken spring, a loose cable or a door hanging at an angle, stop and get an engineer, because those parts are under high tension.
This guide goes problem by problem. Each section lists the likely causes, what is safe for you to check, and which repair it usually points to.
Before you start: safety rules and a quick reference
- Never touch, adjust or try to release torsion springs, tension springs, cables, drums or bottom brackets. They store enough energy to cause serious injury.
- Switch off the power before looking closely at an electric door's motor or tracks.
- Do not stand or let anyone walk under a door that is partly open and not moving as it should.
- Do not pull the manual release on a door that is unbalanced, hanging crooked, or has a broken spring: it may drop.
- Keep children and pets well away while testing.
If something looks broken or bent, skip the checks and go straight to getting help.
Quick reference: symptom, likely cause, safe check
| Symptom | Common causes | Safe check for owners |
|---|---|---|
| Won't open at all | No power, remote fault, broken spring, motor fault | Check power, try wall button, look for a gap in the spring |
| Won't close | Photocell blocked or misaligned, limit settings, obstruction | Clear and wipe photocells, check indicator lights |
| Closes then reverses | Photocells, force setting, obstruction, door out of balance | Clear the threshold and track, wipe sensors |
| Stuck halfway | Broken cable or spring, roller jam, motor cut-out | Look only; do not force the door |
| Remote not working | Flat battery, lost programming, receiver fault | Replace battery, try another remote or wall button |
| Noisy | Dry rollers or hinges, worn bearings, loose fixings | Listen for where the noise comes from |
| Uneven or crooked | Broken cable, spring on one side, bent track | Stop using it and keep clear |
| Heavy to lift by hand | Springs weakened or broken | Do not keep lifting; get it checked |
Garage door won't open
Start with the simple things. Is there power to the garage? Check the plug, the fused spur and any trip switches in your consumer unit. Does the motor light come on? Try the wall button as well as the remote: if the wall button works but the remote doesn't, the problem is with the remote rather than the door.
- Look at the springs. A torsion spring above the door with a visible gap in the coil means it has snapped.
- Check whether the manual release has been pulled. If so, the motor will run but not move the door; re-engage it according to the manufacturer's instructions.
- For manual doors, check whether the lock is engaged or seized.
A motor that hums but does not move the door, or a spring with a gap, means it's time to stop. Broken springs are covered on the garage door spring replacement page.
Garage door won't close
On electric doors, the most frequent cause is the photocells (photo-eyes), the two small sensors either side of the opening near floor level. If the beam between them is blocked or they are knocked out of line, the door will refuse to close or will stop and go back up.
- Remove anything in the doorway: bins, bikes, leaves, snow.
- Wipe both lenses with a soft dry cloth.
- Check the indicator lights; most photocells show a steady light when aligned. Gently adjust by hand until the light is steady.
- Look for direct low sunlight shining into the receiver, which can confuse some sensors.
If photocells are fine and the door still won't close, the limit settings or control board may be at fault. See electric garage door repair for what an engineer will check.
Door opens then reverses, or closes then goes back up
This is the safety reverse doing its job: the door thinks it has hit something. Causes include dirty or misaligned photocells, a leaf or stone on the threshold, a sticking roller, or a door that has become heavier because a spring is weakening. Motors also reverse when force settings drift.
- Clear the floor and tracks and wipe the photocells.
- Watch the door run: does it hesitate at the same point each time?
- Do not increase the force setting yourself; that can make the door unsafe.
Repeated reversing on a door with good photocells usually points to a balance or motor issue. The garage door motor repair page covers force, limits and operator faults.
Door stuck halfway or hanging crooked
A door that stops mid-way and won't move either direction, or one that is lower on one side, often has a broken cable, a snapped spring or a roller out of the track. This is a stop-and-call situation.
- Switch off the power.
- Keep everyone away from beneath the door.
- Do not try to push, pull or release it manually.
Uneven doors usually mean a cable has failed on one side; read more on garage door cable repair. If rollers have visibly left the rails, the separate page on a garage door off its track explains what happens next.
Remote control not working
- Replace the battery in the handset, even if the light still flashes.
- Try a second remote, if you have one. If that works, the first handset is faulty or has lost its code.
- Stand closer to the door: reduced range often signals a weak battery or receiver issue.
- Check that the motor has power and the wall button works.
- Look out for new LED lighting or electrical equipment nearby, which can occasionally interfere with signals.
If you need a new handset or the receiver needs reprogramming or upgrading, the page on garage door remote controls explains the options.
Noisy garage door
Squeaks usually mean dry hinges or rollers; grinding often comes from worn roller bearings or a motor drive; banging may indicate loose track brackets or a spring issue. On roller doors, rattling slats or a groaning barrel are common in older doors.
- Note where the noise comes from and at what point in the cycle.
- A light spray of suitable garage door lubricant on hinges and roller bearings is fine; do not grease inside tracks.
- Do not lubricate or touch springs and cables.
Noise that persists or is getting worse is a sign the door is due attention; garage door servicing usually deals with it before it becomes a breakdown.
Locking problems and door-type specific issues
Door won't lock
On up-and-over doors, a lock that only works if you lift the door means the door has dropped and the lock bars no longer meet the keeps. On side-hinged doors, sagging leaves cause the same issue. Try a dedicated lock lubricant in the cylinder; if the handle spins or the key won't turn, a part has likely broken. See garage door lock repair.
Roller and up-and-over doors
Roller doors can jam when the curtain rides out of a guide, when slats are damaged, or when ice and debris gather at the bottom of the guides; clearing debris is safe, forcing the curtain is not. More detail is on the roller garage door repair page.
Up-and-over doors that are heavy, slam shut or won't stay open usually have weak or broken springs or worn cones and pivots. The up-and-over garage door repair page explains these.
When to stop and call an engineer
- Any broken or gapped spring, or a loose, frayed or snapped cable.
- A door hanging crooked, stuck part-way or off its track.
- A motor that hums, smells of burning or keeps tripping the power.
- A door stuck open that leaves your home insecure, or a car trapped inside.
- Your safe checks haven't solved it.
When you call or use the booking form, describe the symptom, door type and what you have already checked. You'll get a price before any work starts. Urgent situations can be handled through emergency garage door repair, and for everything else we work with local garage door engineers in Liverpool and across Merseyside who can help.
Frequently asked questions
Why does my garage door go back up when it nearly closes?
Usually the photocells are blocked, dirty or misaligned, or the door is meeting resistance near the floor. Clear the threshold and wipe the sensors. If it continues, the force or limit settings or door balance may need attention from an engineer.
How can I tell if a garage door spring is broken?
On a torsion spring above the door, you may see a gap in the coil. The door will feel very heavy, the motor may strain, and you may have heard a loud bang. Do not try to operate the door; get it checked.
Is it safe to use the manual release?
Only on a door that is closed or fully open and balanced. On a door with a broken spring or cable, or one stuck part-way, the release can let it drop suddenly.
My remote stopped working after a power cut. Why?
Some motors lose their settings or need resetting after a power cut. Check the wall button first. If that works, the remote may need re-pairing; if neither works, the control board may need checking.
Can I lubricate my garage door myself?
Yes, hinges and roller bearings can be lightly lubricated with a suitable garage door product. Avoid greasing the inside of tracks and never work on springs or cables.
My door is louder in winter. Is that normal?
Cold, damp weather thickens old lubricant and stiffens rollers, so a door can become noisier. If it is also slower or straining, it is worth a service.