Garage door opener troubleshooting: the Adelaide checklist

If your garage door opener is not working, run this checklist in order: remote battery, power supply, wall button, safety sensor alignment, and lock or holiday mode. Most opener faults are small and cheap. A flat remote battery, a blocked photo-eye sensor, or an accidentally engaged lock mode account for the majority of Adelaide call-outs. Only when those are ruled out is it a receiver, logic board, or wiring fault, which sits in the $150 to $400 opener repair band.

The Adelaide opener checklist

Work through these top to bottom. Each step rules out a common cause.

1. Remote battery. Swap it and retry. If the wall button works but the remote does not, jump to the remote not working guide.
2. Power. Confirm the point is on and the safety switch has not tripped. Test the socket with another device.
3. Wall button. If it works, the opener and motor are healthy and the fault is on the remote or receiver side.
4. Safety sensors. The photo-eyes near the floor must face each other with a clear line. A blocked or knocked sensor makes the door refuse to close (it may open fine but not shut).
5. Lock or holiday mode. Many openers have a lock button on the wall unit that disables remotes. Hold it to toggle off.
6. Travel limits. If the door reverses before closing or stops short, the limits may have drifted and need resetting.

If the door does nothing on any control, the fault may be the motor rather than the opener electronics, so cross-check the garage door motor not working guide. For pricing on each outcome, see the repair cost bands.

The safety sensor: Adelaide's most common culprit

More Adelaide opener call-outs trace to the photo-eye safety sensors than any other single cause. They sit about 150mm off the floor on each side and constantly check the doorway is clear. A cobweb, a leaf, a parked bike, direct afternoon sun, or a knock from a car door can misalign or blind them, and the opener then refuses to close as a safety measure (usually flashing its light or clicking). Wipe the lenses, check both indicator LEDs glow steadily, and gently realign them until they do. This 2-minute fix resolves a large share of "opener not working" complaints at no cost.

When it is the board or receiver

If power, remote, sensors and lock mode all check out and the opener still will not respond, the fault is likely the internal receiver or logic board. Coastal humidity in the salt-air belt (Port Adelaide, Semaphore, Henley, Glenelg, Hallett Cove) corrodes these boards early, which is why seaside openers fail sooner than Hills or plains units. A board or receiver repair typically runs $150 to $400. A vetted specialist can tell you whether a repair or a full opener replacement is the better spend.

Frequently asked questions

Why does my garage door open but not close?

This is the classic safety-sensor symptom. The opener will lift the door but refuses to lower it while it thinks the doorway is blocked. Clean and realign both photo-eyes until their indicator lights are steady, and check nothing is sitting in the beam.

My opener clicks but the door does not move. What now?

A click with no movement usually means the opener is powered and trying, but the motor, drive gear, or door is the issue. Check the release cord is engaged, then work through the motor diagnosis, as a stripped gear or broken spring is the likely cause.

How do I reset my garage door opener?

Switch it off at the power point for 30 seconds, then back on, to reboot the logic board. If a remote has stopped pairing, you may need to re-program it via the LEARN button. Persistent faults after a reset need a specialist.

If the checklist runs out, get matched with vetted Adelaide specialists free and compare quotes.