A garage door that won't open usually has a simple cause — but a few of them are a genuine safety issue. Here's how to work through it calmly and safely.
Quick checks first
- Power: confirm the opener is plugged in and the circuit hasn't tripped at the switchboard.
- Remote batteries: try the wall button. If that works but the remote doesn't, it's a remote or battery problem, not the door.
- Lock or holiday mode: many openers have a vacation lock that disables remotes.
- Photo-eye sensors: the small sensors near the floor stop the door if they're misaligned or dirty. Wipe the lenses and check they face each other.
Signs you should stop and call a technician
If the door is crooked, hanging on one side, or you can see a gap in the spring above the door, stop. A broken spring or cable puts the door under dangerous tension, and forcing it can cause serious injury or damage.
Never disconnect the opener and try to lift a door that feels jammed or heavy — that weight is normally carried by the springs. If the manual release makes the door slam or drop, the balance is gone and it needs professional attention.
The bottom line
Power, remotes and sensors are safe to check yourself. Anything involving springs, cables or a door that won't stay put is a job for a licensed technician — and because a door that won't close leaves your home open, it's worth calling straight away.