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Why Does My Garage Door Open by Itself?


By Carrie Dixon, Blog Editor

Garage Door Opening On Its OwnWhether you use your garage for general storage, to safeguard your vehicles, as a shop or for some other reason, it’s an important element of your home. An automatic garage door is convenient, but if it’s not secure, anyone could gain access to the interior of the garage, or even the home itself. If your garage door is opening all by itself, this can be not only frustrating, but dangerous. Why would it open on its own?

The most common reason for a garage door that opens by itself

The single most common reason that a garage door might open (or close) by itself with no input from you is a short in the circuit board. A short completes a circuit even without the electronic signal from the remote of wall switch. When the circuit is complete, the door opens on its own. That’s definitely not a situation in which you want to find yourself. However, the short may not be in the board itself. In fact, it could be in the wiring to the motor, or any of a number of other electrical components.

There’s something blocking an eye

If your garage door begins to close and then opens again on its own, it might not be anything more than a problem with a safety device. Your garage door is equipped with electronic “eyes” that are positioned close to the floor along the rail. These are designed to sense any sort of obstruction in the path of the door (like children, cars, bikes and the like). If an obstruction is sensed (the beam from one eye to the other), the garage door is stopped and reversed in order to prevent damage or injury. Check for obstructions, or check the alignment of the eyes if there’s nothing physically in the path of the beam.

Interference and other opener signals

Another reason that your garage door might open by itself is if there is enough electronic interference. You’ll find this from multiple sources, including CB radios, nearby radio stations and even police radios in some instances. There’s also the very rare chance that one of your neighbors is using the same code with his or her garage door, and whenever they press the remote button or the switch inside, your door opens or closes in response to the command. The best option in this case is to change the frequency on your garage door opener and remote. You’ll need the operator manual that came with the garage door opener to do this. Just reprogram them both according to the instructions, and if the problem stops, you’ve solved the issue.

It needs to be reset

There’s a pretty famous maxim about dealing with odd behavior in electronic equipment that says, “turn it off and back on again”. It might be tired and old, but it doesn’t mean its untrue. Sometimes things just need a bit of a reset. You’ll need to flip the breaker that controls your garage door opener for this. While this won’t work in every instance, it can work in some.

Power surges can cause this problem

If you experience power surges in the grid, or a strong thunderstorm has passed that caused a spike in power, chances are good that’s the cause of your problem. Of course, there’s a simple fix – replacing the transmitter. Once the transmitter’s wiring has been damaged by a power surge, it needs to be replaced, not repaired.

These are a few of the reasons why your garage door may open (or close) by itself. The best option is to work with a Five Star Rated garage door specialist to solve the issue in a timely manner.

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