Garage door won’t open: 9 common causes and what to check

If your garage door won't open, the cause is usually one of a short list: no power to the opener, a remote or wall switch fault, a lock or manual release in the wrong position, an obstruction or ice, or a mechanical failure such as a broken spring, snapped cable or worn motor. Start with the simple electrical checks, because they solve a surprising number of cases. If those are fine and the door feels heavy or makes unusual noises, stop and get it looked at.

Below are the nine causes we would work through, roughly in the order worth checking, with a clear note on where safe checks end and engineer work begins.

Start here: is it the door or the opener?

The first useful question is whether the problem is electrical or mechanical. A quick way to tell is to listen when you press the remote or wall button.

• Complete silence, no lights: points towards power, the remote, or the control board.
• A click or hum but no movement: suggests the motor is trying but something is stopping it, such as a lock, a jammed door, a seized motor or a broken spring.
• The door lifts a little and stops or reverses: often the operator sensing too much load, which commonly means a spring or cable problem.

On a manual door, the question is simpler: does the handle turn and release the lock, and does the door then feel normal to lift? If the door feels dramatically heavier than usual, read our guide on how to tell if your garage door spring is broken before going any further.

Why won't my garage door open? The 9 common causes

This table gives a quick overview. Each cause is explained in more detail below.

Electrical causes you can check first

1. No power to the opener

Check the operator is plugged in and the socket is switched on. Plug something else, such as a lamp, into the same socket to prove it is live. Then look at your consumer unit for a tripped RCD or circuit breaker, which is common after a storm or when garage sockets are shared with freezers and power tools. Garages with a separate fused spur may have a blown fuse. If the power keeps tripping when the opener is reconnected, leave it off and get it checked.

2. Remote control or keypad fault

If the wall button works but the remote does not, the remote is the problem. Replace the battery first, check the remote's LED lights when pressed, and try a spare handset if you have one. Remotes can also lose their coding, particularly after a battery change on some systems or a power interruption. Re-pairing is usually described in the opener's manual. If you have lost handsets, or need new ones coded to an older receiver, our garage door remote control service covers replacement and programming.

3. Wall switch, keypad or lockout mode

Many operators have a vacation or lockout setting, usually a button or switch on the wall control, that disables remotes for security. It is easy to press by accident. Check the wall control, and on doors with a key switch outside, make sure it is fully returned to its normal position.

Locks, releases and simple obstructions

4. A lock is engaged

Up-and-over doors fitted with an operator often still have their original lock, with rods running to latches at each side of the frame. If someone has turned the handle key, the motor will hum or strain against it. Some electric doors also have a separate bolt or a garage defender fitted. Make sure every lock is fully released before trying again.

5. The manual release has been pulled

Ceiling-mounted openers have an emergency release, usually a red cord hanging from the trolley on the drive rail. If it has been pulled, the motor runs and the trolley moves, but the door stays where it is. With the door fully closed, follow the manual to re-engage it; many reconnect automatically when the opener next runs. Never pull the release with the door open if you suspect a spring problem, because the door may drop.

6. Obstruction, ice or swollen timber

Check the tracks and the floor for anything blocking the door: a stray bike wheel, garden tools leaning against the tracks, or debris in the bottom guide of a roller door. In freezing weather the bottom seal can freeze to the floor. Freeing it gently with warm, not boiling, water and drying the area afterwards usually works. Timber side-hinged and up-and-over doors can also swell in damp weather and bind in the frame, which is common in exposed spots across Merseyside.

Mechanical failures that need an engineer

These causes involve parts under high tension or load. Look, but do not touch.

7. A broken spring

Springs counterbalance the weight of the door. When one breaks, the door becomes very heavy and the opener will often lift it a short distance before stopping or reversing. You may have heard a loud bang, and on a sectional door you may see a gap in the coil above the opening. Do not try to lift the door by hand or keep pressing the remote. A garage door spring replacement is a job for a trained engineer, as springs store enough energy to cause serious injury.

8. A snapped cable or a door off its track

Sectional doors lift on steel cables wound around drums at each end of the torsion shaft. If a cable snaps or comes off its drum, the door usually hangs crooked or jams. Rollers can also come out of the tracks after a knock from a car. Forcing the door in this state can bend panels and tracks, so leave it where it is and keep clear.

9. Motor or control board failure

If the opener hums without moving, shows an error code, smells of burning or works only intermittently, the fault may be in the motor, gears, capacitor, limit switches or logic board. Some roller door motors also have a thermal cutout that stops them after repeated use; leaving them to cool may restore operation, but recurring cutouts point to an underlying fault. Our garage door motor repair page explains common operator faults and when a repair or a replacement unit makes more sense.

What should you not do when a garage door won't open?

A stuck door is frustrating, especially with the car inside, but a few common reactions turn a simple repair into an expensive or dangerous one.

• Do not keep pressing the remote. Each attempt strains the motor and can burn out the board.
• Do not lever the door with a crowbar or drive into it to free it.
• Do not adjust, release or remove springs, cables, bottom brackets or drums.
• Do not use the manual release with the door open if a spring or cable might be broken.
• Do not spray heavy grease into tracks to free a sticking door; it collects grit and makes things worse.

For more troubleshooting across all door types, our guide to common garage door problems covers noises, sticking, reversing and more.

When it is time to book a repair

If you have checked the power, remote, locks and release and the door still will not open, or if any of the mechanical signs above apply, it is time to call. The same goes for a door that opens only intermittently, because that pattern tends to get worse rather than better.

Our local garage door repair service in Liverpool covers homes and garage blocks across the region. If you are in Huyton, Allerton or anywhere nearby, call us or use the booking form.

Tell us the door type, the make of the opener if you know it, and exactly what happens when you press the button. With that information, a local engineer can come prepared and aim to get the door moving safely again in a single visit.

Frequently asked questions