An electric gate that won’t close properly can be inconvenient, and potentially leave your property unsecured. While some issues are simple to identify, others require professional diagnosis to ensure the gate remains safe and compliant. Understanding the most common causes can help you identify the problem and determine whether a repair is needed.

Why Is My Electric Gate Not Closing?

If your electric gate opens normally but refuses to close, the issue is often related to a safety device, access control system, or fault within the gate automation. Modern electric gates are fitted with a range of safety features designed to prevent accidents and damage. If one of these devices detects a problem, the gate may stop, reverse, or refuse to begin its closing cycle.

Faulty Photocells

One of the most common reasons an electric gate won’t close is a problem with the photocells.

Photocells create an invisible safety beam across the entrance. If the beam is interrupted or a fault is detected, the gate may stop, reverse, or refuse to close depending on how the system has been programmed.

Common photocell issues include:

• Dirty sensor lenses
• Misaligned photocells
• Damaged wiring
• Water ingress
• Failed sensors

Dirt, leaves, insects, or a simple alignment issue can sometimes be enough to prevent the system from operating correctly.

Force Detection Has Been Activated

Photocells use a beam between two sensors placed across the gate opening.

If something breaks the beam while the gate is closing, the system reacts to stop movement or prevent the gate from closing fully.

Photocells are commonly fitted to both domestic and commercial gate systems.

Force Limitation

Modern electric gates are designed to monitor resistance while the gate is moving. If the automation system detects excessive resistance, it may stop or reverse the gate as a safety precaution.

This can be caused by:

• Stiff hinges
• Worn rollers
• Debris in a sliding gate track
• Ground movement
• Damaged gate hardware
• Strong winds acting against the gate

In many cases, the automation system is working exactly as intended and is preventing the gate from continuing its movement until the underlying issue is resolved.

Obstructions in the Gate’s Path

Both sliding and swing gates require a clear operating area.

Potential obstructions include:

• Stones or debris in a sliding gate track
• Vehicles parked too close to the gate
• Overgrown vegetation
• Fallen branches
• Damaged rollers or guide systems

Any obstruction that restricts movement may cause the gate to stop or trigger the force detection system.

Safety Edge Faults

Many electric gates are fitted with safety edges that help protect users if the gate encounters an obstruction.

If a safety edge becomes damaged or develops a fault, it can prevent the gate from closing correctly.

Common causes include:

• Poor electrical connections
• Damaged safety edges
• Broken cables
• Water ingress
• Faulty transmitters or receivers

Access Control or Intercom Issues

Sometimes the gate automation itself is functioning correctly, but an issue with the access control equipment is preventing normal operation.

This can include:

• Faulty keypads
• GSM intercom issues
• Push button faults
• Access control relay faults
• Programming errors

These faults can interfere with the signals being sent to the gate controller and affect how the system responds.

Limit Switch Problems

Limit switches tell the gate controller when the gate has reached its fully open or fully closed position.

If a limit switch becomes damaged, misaligned, or incorrectly adjusted, the controller may not know the gate’s exact position.

Common symptoms include:

• The gate refusing to start a closing cycle
• The gate stopping before it closes
• The gate reversing unexpectedly
• Inconsistent operation

Control Board Faults

The control board manages the operation of the gate, including safety devices, access controls, opening and closing commands, and motor functions.

If the control board develops a fault, you may experience:

• Gates opening but not closing
• Intermittent operation
• Random stopping
• Safety device errors
• Complete system failure

Control board faults typically require specialist diagnosis and repair.

Power Supply Problems

Power issues can affect how the automation system operates.

Potential causes include:

• Mains power interruptions
• Damaged underground cables
• Loose electrical connections
• Faulty transformers
• Battery backup failures where fitted

Although the gate may still appear to function, inconsistent voltage can sometimes affect the closing cycle.

Can I Fix an Electric Gate That Won’t Close?

Before calling an engineer, it is worth checking:

• The photocells are clean and unobstructed
• There are no objects in the gate’s path
• The power supply is working correctly
• Emergency stop buttons have not been activated
• Sliding gate tracks are clear of debris

If the issue remains, further investigation is usually required to avoid causing additional damage to the system.

When Should You Call an Electric Gate Repair Specialist?

If your gate remains open, repeatedly reverses, stops unexpectedly, or displays unusual behaviour, it’s best to have it inspected by a qualified engineer.

Modern electric gates contain multiple safety devices that must operate correctly to remain compliant with current safety standards. Attempting to bypass these systems can create significant safety risks and may lead to further damage.

At TWS Automation, we repair electric gates across Durham and the North East. Whether the issue is a faulty photocell, damaged safety edge, motor fault, control board problem, or access control issue, our engineers can quickly diagnose the fault and get your gate operating safely again.

If your electric gate won’t close properly, contact our team today for expert advice and repairs.

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