Power
Check the supply breaker and whether the controller shows a light.
If a breaker trips again at once, leave it and call.
Troubleshooting Guide
Gate Barrier Not Opening? Causes and What to Check
A gate or boom barrier that will not open, opens halfway or ignores the remote is usually pointing to something simple: no power, a flat remote battery, a blocked safety sensor or a release lever left unlocked. Here is what to check, and what to leave to a technician.
Written Quotation Since 2018 Abu Dhabi & Al Ain
In short: a gate barrier that does not open is most often caused by a loss of power (a tripped breaker, a failed supply or a flat backup battery), a flat remote battery, a blocked or misaligned safety sensor, a manual release left open, a card reader or number plate camera that does not recognise the vehicle, or a controller fault shown by a code or light. Check the power, try another remote or the wall button, clear anything in the path and look at the sensors and the controller light before you call. Never force the arm or open the control cabinet. If it still will not open, or the arm will not hold, ask an installer to check it. Emirtech installs and repairs gate and boom barriers in Abu Dhabi and Al Ain.
What the gate may be telling you
| Symptom | Likely cause | Check first |
|---|---|---|
| Nothing happens, no lights | No power: a tripped breaker, a failed supply or a power cut. | Check the supply breaker and whether the controller light is on. Do not open the cabinet. |
| Wall button works, remote does not | A flat remote battery, or a remote that is out of range or no longer paired. | Replace the remote battery and try a second remote; ask an installer to pair it if needed. |
| Nothing works but the controller light is on | A controller fault, an active safety input, or a jammed arm or gate leaf. | Note any code or flashing light and clear anything blocking the path. |
| Opens a little, stops or reverses | A safety sensor (photocell) that is blocked, dirty or misaligned, or an obstacle that the gate has detected. | Wipe the sensor lenses, clear the path and check nothing sits in the beam. |
| Motor hums but the gate or arm will not move | The manual release left unlocked, a mechanical jam, or a motor that has overheated. | Check that the release is locked as the manual shows; let an overheated motor cool and tell your installer. |
| Boom arm drops or will not stay up | A balance spring or arm fitting problem. These springs are under tension. | Do not touch the spring. Keep clear of the arm and call a technician. |
| Card, tag or number plate not recognised | A card not enrolled, a reader or camera fault, or a link problem with the controller. | Try a second card, note the reader light or message and ask the system administrator. |
| Fails after rain or in the heat | Moisture or heat in a sensor, a loose connection or a weak battery. | Note when it fails; a technician can inspect the sensors, wiring and battery. |
| Stuck after a power cut | A flat backup battery, or a controller that did not restart cleanly. | Check that mains power is back; if the controller light stays off, call for help. |
Safe checks you can do
Remote and wall button
Try a second remote and the wall button or keypad.
That separates a remote problem from a gate problem.
The path
Clear anything touching the arm or gate leaf, and any vehicle or object in the way.
A parked car, a bicycle or a branch can stop a gate.
Safety sensors
Wipe the sensor lenses with a soft cloth and look for a sensor that has been knocked out of line.
Never bypass or tape over a safety sensor.
Release lever
Check the manual release is back in the locked (motorised) position, as the manual shows.
A gate left in manual mode will not respond.
Write it down
Record any code or light, when it started and what changed first (a power cut, rain, a knock).
That helps the technician bring the right parts.
Do it yourself or call an installer
You can look and clear the path; leave springs, wiring and the controller to a technician.
Safe to try
Checking the breaker, trying another remote, clearing the path, wiping sensor lenses and checking the release lever as the manual says.
Call an installer
A gate that will not open after the basic checks, an arm that will not hold, a code you cannot clear, repeated stopping or reversing, or damage after an impact.
Do not attempt
Opening the control cabinet, working on mains wiring, touching a boom balance spring, forcing the arm by hand or bypassing a safety sensor.
Emirtech is an independent integrator in Mussafah, Abu Dhabi, ADMCC-approved for security systems in the Abu Dhabi emirate. We install and repair gate and boom barriers in Abu Dhabi and Al Ain and are not a brand partner or distributor. We have no office in Al Ain, so visits there are by appointment.
Have this ready when you call us
- The gate or barrier brand and model, if you know it, and a photo of the controller or its label.
- Any code or light shown on the controller.
- When it started and what changed first (a power cut, rain, an impact).
- Whether the remote, the wall button and the card reader all fail, or only one of them.
- Whether it is a boom barrier, a sliding gate or a swing gate.
- Any maintenance contract or warranty details.
This page is general information about gate barrier faults. Follow the maker's manual for your system, keep people and vehicles clear of a moving gate and do not work on mains power or open the controller. Brand names are trademarks of their owners; Emirtech is not a brand partner or distributor.
Frequently Asked Questions
Why is my gate barrier not opening?
The common causes are no power, a flat remote battery, a blocked or misaligned safety sensor, a manual release left unlocked, a controller fault, or a card reader or number plate camera that does not recognise the vehicle. Check the power, try another remote or the wall button and clear the path first. If it still does not open, ask an installer.
Why does my automatic gate stop or reverse halfway?
Usually a safety sensor or the gate's obstacle detection has seen something in the path, or a sensor is dirty or out of line. Clear the path and wipe the sensor lenses. Repeated stopping can also mean wear in the motor, track or hinges, so have it checked.
Why does the remote work for one person but not another?
The second remote may have a flat battery, may not be paired to the receiver or may be a different type. Try a new battery first, then ask an installer to pair it.
What does a gate barrier do in a power cut?
It depends on the system. Some have a backup battery that lets the gate open or close a limited number of times, and most have a manual release for use when the power is off. Check your manual and have the battery tested during maintenance. See annual maintenance contracts.
Can I open a boom barrier by hand?
Only if the maker's manual describes a manual release, and only with the power safe and the area clear. Do not push the arm against the motor or touch the balance spring, which is under tension. If in doubt, call a technician.
Is it safe to bypass the safety sensors?
No. Safety sensors protect people and vehicles. A sensor that keeps blocking the gate should be cleaned, realigned or replaced by a technician, not bypassed.
Why does the barrier not open for my card or number plate?
Common reasons are a card or plate that is not enrolled, a reader or camera fault, a dirty or misaligned camera, or a link problem with the controller. Ask your system administrator to check the entry, then call an installer if the reader or camera is at fault. See ANPR licence plate recognition.
How often should a gate barrier be serviced?
Follow the maker's manual. A gate used every day benefits from regular checks of the sensors, springs, fixings, battery and release. See annual maintenance contracts.
What does gate barrier repair cost?
It depends on the fault, the parts and the time on site, so we do not publish prices. We assess on site and send a written quotation before any work. See the gate barrier cost guide.
How do I get gate barrier repair in Abu Dhabi or Al Ain?
Send a WhatsApp message or use the request form with the details above. We reply the same working day, assess the gate on site and send a written quotation before any work. See automatic gate barrier repair.
Gate barrier not opening?
Tell us what the gate does and what the controller shows. We reply the same working day, assess on site and send a written quotation.
Need a free site survey or quote in Abu Dhabi?
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