Electric Gate Opens After Closing

As a homeowner there can be little more frustrating than spending good money to install external security features like electric gates, only to find that they open themselves again after closing. 

In this article we’ll look at exactly why electric gates open again after closing, with a particular focus on some simple solutions you can carry out at home. 

In the unfortunate case where these fixes don’t work, you’ll also find yourself better armed when an engineer arrives, having already identified the likely cause. Because after all, time is money, so the quicker your engineer can find the fault and fix it, the lower your bill is likely to be. 

Why Does My Electric Gate Open After Closing?

Contents

An electric gate that opens again after closing is a reasonably unusual problem. More often than not, either a gate won’t open, won’t close, or gets stuck part way. As a result, deducing the exact cause of a gate that opens itself again isn’t always the easiest of projects. 

However some of the most common culprits for this issue are:

  • Locking Mechanism Faults
  • Gate Obstructions
  • Radio Interference
  • Faulty Power Supply
  • Loose Wiring

Let’s take a look at each of these in turn…

Electric Gate Opens After Closing

Locking Mechanism Faults

If your electric gates have any kind of locking mechanism that is used when closed then carefully inspect this. 

Loose fittings or screws can mean that the mechanism is not engaging properly, allowing your electric gates to re-open at will. In extreme weather they may even just blow open. 

On swing gates examine the area where they meet in the middle. On slide gates look at the area where your gate meets the gatepost. Ensure any locking mechanism you observe is in good condition and is sturdily fitted. 

Gate Obstructions

Electric gates are programmed with safety features to prevent damage being done to pedestrians or vehicles. In essence if most electric gates sense an obstruction when closing they will stop, and may even reverse the previous action, gently opening once again.

Inspect your gate sensors, pay attention to the journey your electric gate takes. Could anything be triggering this feature? For example is a sensor dirty or grimy, or has it become loose, causing it to become misaligned?

If in doubt give the sensors a good clean (and a gentle wiggle to ensure they’re fitted snugly).

Radio Interference

Many electric gates can open in response to a signal from a remote control. Such radio signals are prone to interference from other devices, which may be trying to use the same frequency. 

If your electric gate can be controlled in this way then interference is another consideration. 

There are two potential action points here. 

Firstly, consider when your electric gates re-open. Does it happen every time, like clockwork, as soon as they close? Or do they seem to open at random times? This may help to deduce whether the use of any other device nearby is causing interference. 

If any other electrical items are positioned near to your electric gates (a good example being outside lights or electric garage doors) then try switching these off or moving them away to see if it resolves the issue. 

The second consideration is switching off the power to the electric gate, and then turning it back on. In this way you can potentially reset the frequency, away from any potential interference, which can solve the issue. 

Faulty Power Supply

It may sound odd but problems receiving power to the gate can also cause it to reopen after closing. If your electric gate is connected to mains power then check your fuse board to ensure they haven’t tripped, and also investigate any fuses within the gate housing itself. 

If your electric gate uses a battery for power then consider swapping to a new battery, or at least having the old one tested.

Loose Wiring

Just because power is flowing successfully to your electric gate doesn’t necessarily mean it is getting to the motors and sensors as required. 

Open up the electric gate casing and have a good look for any loose writing. It is a reality of outdoor electricals that no matter how well they are weather-proofed, sooner or later some soldering is going to come loose, or some corrosion is going to occur. The question isn’t “if” it’s “when”. 

So have a good look over any wiring you can see to check it all looks sound and suitably connected. 

If In Doubt, Call a Professional 

Sadly, if you’ve got to this stage in the article without any success then it’s likely time to call in an electric gate engineer. Some faults simply can’t be identified or remedied by a lay person. At least by this point you can console yourself that you’ve checked everything possible, and won’t be wasting money on getting a professional out, only to find that the issue was something so obvious you could have repaired it yourself.