Quick answer
Most barrier faults come from power, a stuck loop detector, a blocked or misaligned photocell, a spring balance that no longer matches the arm, or the trigger device (remote, card reader or ANPR) not sending its signal. Many can be found with a few simple checks.
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Shop all gate products →Key takeaways
- Barrier stays up: loop or photocell thinks a vehicle is still there.
- Barrier won't open: power, controller or the trigger device.
- Arm drops or bounces: spring balance or arm length mismatch.
- ANPR not opening: plate not on the list or camera view blocked.
- Use the manual release for safe manual operation.
01Symptom guide
| Symptom | Likely cause | Check |
|---|---|---|
| Won't open | No power, controller fault, trigger not sending | Power light, remote battery, card reader, ANPR event |
| Stays open | Loop detector stuck, photocell blocked | Clear the lane; clean and align photocells |
| Opens by itself | Loop sensitivity too high, faulty loop | Loop detector settings and cable |
| Arm bounces or falls | Spring balance wrong for the arm | Have the springs adjusted |
| ANPR doesn't trigger | Plate not whitelisted, dirty lens, bad angle | Event log, lens, plate list |
02Safe first steps
- Check the power and controller lights
- Clean the photocell lenses and check they face each other
- Make sure nothing is parked over the loop
- Try a second remote or card
- Check the ANPR log to see if the plate was read
WarningNever stand under the arm or adjust springs yourself; they hold a lot of energy.
When to call a professionalQyvea services and repairs boom barriers and ANPR lanes. Call 0113 301 244 or WhatsApp us.
03Frequently asked questions
Why does my barrier stay open?
Usually the loop detector or photocell thinks a vehicle is still in the lane. Clear and check both.
Why does the barrier arm bounce?
The spring balance doesn't match the arm length or has weakened; a technician should adjust it.
