Why Won't My Garage Door Open?

Home » The Wright Blog » June 23rd, 2017 | Why Won't My Garage Door Open?
Why Won't My Garage Door Open?

The Top 10 List of Reasons Your Garage Door Won't Open​

As commercial and residential garage door service professionals, we’ve pretty much dealt with every issue you can think of when it comes to garage door repair. Even still, there are sometimes issues that continue to surprise us, like the tiny insect nest growing on the photo eye sensor or the tennis ball that somehow managed to knock the door entirely off its track. Even though these issues are uncommon, it’s nothing that garage door service professionals like us can’t handle!

While there are times you may be able to fix the problem yourself, there are many reasons it may be best to leave the garage door repair up to the professionals. Knowing what’s wrong with your garage door may help you to determine if it is a problem you can tackle or if it’s time to call someone for assistance. To help you troubleshoot your garage door issues, here are the top 10 reasons your garage door won’t work.

1) The Garage Door Transmitter Batteries Are Dead

This may sound obvious, but your garage door transmitters need power to work. If the batteries in your transmitter are dead, the transmitter won’t be able to send a signal to your garage door to open.

First, check to see if the transmitter on the wall inside your garage still opens your garage door when pressed. If it does, then the transmitter in your car likely just needs a simple battery replacement. If you have more than one car transmitter for your garage door, then your other transmitters will likely need new batteries soon as well, since they were probably installed around the same time.

Changing the battery on your garage door transmitter is pretty simple. On most, you can simply slide the door open on the back of the transmitter and remove the battery. Others may be screwed in to keep the battery more secure, so this type of transmitter will require a screwdriver to open.

After removing the old batteries, make sure the plus and minus signs line up with the plus and minus signs on the inside of the transmitter. Otherwise, the new battery won’t work in the transmitter, and it could give you a false sign that something else may be wrong. Once the battery is in place, test the transmitter, and if it works, replace the transmitter door.

2) Your Garage Door Photo Eye Is Out Of Alignment

You may remember a time as a kid when you and your siblings would close the garage door and run underneath it as fast as possible to make it out before the door closed. Well, on any garage door installed after 1993, that’s no longer possible thanks to two tiny photo eyes on either side of the garage entrance. These photo eyes transmit an invisible beam between each other that detects if anything is in the garage door’s path when it closes. This safety measure is there to prevent automatic garage doors from closing on top of someone or something and causing serious injury or damage to property.

If you notice that the garage door opens normally but doesn’t make any attempt to close when the remote is pressed, the first thing you’ll want to do is visually inspect the photo eyes. Over time, these eyes can get dirty, causing the light from the beam to be blocked. They also can eventually become misaligned, causing the eyes to not match up on both sides.

When cleaning the photo eye, you should take care not to scratch or damage the eye since it’s made of glass, similar to that of a camera lens. The photo eye itself is pretty small, only a few centimeters in diameter, but it can get dirty rather easily. To clean it, you’ll need a soft cloth and a mild, streak-free cleaner. Gently wipe away any dirt or residue that has built up on the eye and be careful not to oversaturate as excessive wetness can cause dirt to stick to the eye more quickly.

If your photo eyes are clean and the door still isn’t closing, the next thing you’ll need to do is check the alignment of the eyes. The eyes should be pointing in exactly the same direction and at the same angle. If they’re off, they won’t register that the other one is there, and it’ll assume something is in its path, causing the door to stay in the open position. When checking the alignment, measure the height of each photo eye from the ground. Use a level to make sure they’re pointing directly across at each other at the same angle. A laser level will make this part a little easier, but if you don’t have one, a regular level will work as well.

Once you have the eyes cleaned and aligned, test your door to make sure it opens and closes normally. If you’re still experiencing issues with the photo eyes, it m ay be time to call the professionals to come out and diagnose the problem.

3) The Garage Door Track Is Not Aligned Properly

If your garage door track is out of alignment, it can be a serious issue. The metal track your door runs on needs to be aligned properly in order for your door to move. If you see gaps between the rollers and rail, or bends in the rails themselves, you have a problem. The heavy weight of the door can compound these issues and make them worse until it becomes dangerous to operate your door.

If the track is misaligned, but the door still moves, there are a few things you can do to attempt to remedy the issue on your own. You’ll know that it’s misaligned if you hear a rubbing noise when the garage door reaches a certain spot on the tracks each time it opens and closes. Sometimes the door may even slow down slightly when it hits this spot.

To realign the track, first loosen the screws that hold the track to the frame. Then, gently tap the track with a rubber mallet to move it back into the proper position. Use a level to ensure it’s perfectly straight. Once you have the alignment correct, tighten the screws securely to ensure the track won’t move and cause more issues when opening your garage door. You’ll need to repeat this same process on the other tracks as well, as these may also be out of alignment.

If the door won’t move at all because of an alignment issue, then this problem isn’t one that you should try to tackle yourself. A garage door professional will have the necessary equipment needed to safely realign and repair your garage door. Additionally, if the track misalignment is beyond repair, a professional can install a new garage door track for you.

4) Something Is Wrong With Your Garage Door Transmitters

There could be a few issues that might be causing your transmitters not to work properly. The most common reason could be that you’re simply out of range of your garage door. Each garage door and transmitter combo has a specific range it will function in. If you’re trying to open your garage door before you can even see your house, then chances are you’re just too far away. Try waiting until you turn into your driveway to hit your transmitter button, and you should have more success opening your garage door on the first try.

When you know you’re in range and the door still won’t open, check to make sure the antenna is hanging down from the motor inside your garage and nothing is blocking it. Your antenna must be free from any obstruction to clearly receive the signal to open and close the door. Also inspect the antenna for any signs of damage. If it looks like there has been damage to the antenna, you’ll need to call your garage door technician to come out and replace it.

If you find that your garage door opens and closes randomly when you’re not even hitting the button, it may seem like your garage door is going haywire and the only possible solution is to replace the entire unit. However, we assure you that there’s likely a much simpler answer to this problem.

First, make sure your transmitter isn’t stuck under something that could be pressing on the button. For example, your transmitter may have fallen under your car seat and the button is accidentally being pushed by something heavy rolling around on your floor. If that’s not the case, you may also need to check your transmitter’s frequency. It’s possible your neighbors could be running their garage doors on the same frequency as yours, and as they drive by, they’re opening their garage door along with yours.

It’s possible to change your garage door frequency so this doesn’t continue to happen. Each model will have different steps on changing the frequency, so consult your owner’s manual for specific instructions, or call a garage door professional to come help you.

If you’ve tested and tried to remedy these other problems and you’re still having issues, you may need to reprogram your transmitter. All transmitters have a learn button somewhere on the remote, so first you’ll need to locate that on your transmitter. Press and hold the learn button for a few seconds until the indicator light starts blinking. While the light is blinking, press your remote button again to reprogram that remote.

This process may vary depending on your specific garage door model, so you’ll need to double check the owner’s manual to make sure there aren’t additional measures that need to be taken. It should only be a few steps to fully reset and reprogram your remote, though, so your garage door transmitter should be working properly again in no time.

5) Something Is Blocking Your Garage Door's Path

As mentioned in issue #2, garage doors are designed with a reversing mechanism that prevents them from crushing objects in their path. If you find that your garage door closes part way and then goes back up, this can be triggered by objects on the ground blocking their path such as garbage cans or toys. It could also be caused by a buildup of debris on the tracks that prevents the rollers from moving forward. This could include small items like rocks, gum or mud buildup. If the door hits even a small object on the track, it will go back up to avoid crushing whatever is underneath it.

Inspect the area around your garage door to see if something is blocking the photo eye sensors. Then look at the tracks to see if there is any buildup on the inside. You’ll need to get a step ladder to look at the tracks on the top part of your garage, as it will be difficult to see from ground level. It may also not be a bad idea to proactively wipe down your garage door tracks periodically to prevent this type of buildup from occurring. Running a damp rag along each track should be enough to remove anything that’s lingering on the tracks.

6) Your Garage Door Springs Are Broken

If your garage door all of sudden won’t go up and you’re sure the transmitters are working properly and power is getting to the motor, then you may have broken torsion springs.

If you happen to be home when these break, you’ll hear a loud bang from inside your garage. This bang can be so loud that some people might think a firecracker went off inside their garage. That’s because garage doors can be very heavy and despite what most people think, it’s not the garage door opener that does the heavy lifting, but rather the heavy-duty springs of the door.

Doors come with one or two torsion springs. If either spring is broken, the garage door opener may struggle to lift the weight of the door or fail to open the door at all. If a spring is broken, call a professional for service as these can be very dangerous to work with. Don’t try to open the door until a professional comes to inspect it and replace the springs. Springs can only be used for a certain number of open and close cycles, and over time they will eventually break and need replacing.

7) The Garage Door Limit Isn't Set Correctly

Sometimes, you’ll notice that your garage door closes all the way and then immediately goes back up instead of staying in the closed position. This issue usually arises with brand new garage doors that were just installed or older models that may need to be reset. If this happens, the most likely culprit is the open and close limit settings of your garage door opener.

This limit range tells the garage door opener how far the door should move before it’s fully closed. If your settings are too high, the door will hit the ground before the opener thinks it should and assume the door is hitting something in its path. It will then automatically reverse to prevent crushing whatever is beneath it.

There are knobs or dials located somewhere on your garage door motor that you can use to adjust the limit settings. The exact location and resetting procedures will vary depending on the brand and model of garage door you have. Your owner’s manual should have more specific information on how to adjust your limits. You may need to experiment with a few adjustments before finally getting the correct setting. If you find that adjusting the limit settings isn’t working, it might be time to call a technician to come and help get your garage door to stay closed.

8) The Garage Door Disconnect Switch Is Enabled

If you can hear your garage door motor running for what seems like the full amount of time it normally would take to open or close the door, but the door doesn’t move, chances are the disconnect switch has been enabled. Every garage door opener comes with a disconnect switch in case you lose power. This allows you to open or close the door manually so your car isn’t stuck in the garage until the power comes back on.

This switch is usually attached to a rope that can be pulled or a knob that can be turned to disconnect. Sometimes, this switch can accidentally come unhooked causing the door to be disconnected from the motor.

However, if you lose power and use the disconnect switch, you’ll need to reattach it to use your garage door motor to open and close your door again. Open the door all the way and then reattach this hook. Then try opening or closing the door again with your transmitter, and you should be all set. It will be easiest to reattach this hook when your car is not in the garage, as you’ll need to place a step ladder underneath the motor to reach it.

9) The Garage Door Was Manually Locked

If your garage door doesn’t open, but the opener motor runs for just a few seconds and then shuts off, the garage door itself may have manually been locked. If you’ve checked the door springs and the track for obstacles, and those things appear to be fine, check to see if the lock on the door is engaged.

If your garage door doesn’t open, but the opener motor runs for just a few seconds and then shuts off, the garage door itself may have manually been locked. If you’ve checked the door springs and the track for obstacles, and those things appear to be fine, check to see if the lock on the door is engaged.

10) The Tension Springs or ​Cables are Broken

Garage doors have tension springs and cables that help to slowly and safely lower your door while closing. If these tension springs or cables break, you might find that your garage door closes really fast, often with a loud bang when it hits the ground. This is very dangerous as there is nothing preventing the garage door from crushing something that might be below it. It’s best to call a garage door professional as soon as you can to have them come out and repair these cables or springs.

Once the springs break, quite a bit of tension is put on the door cables, and they will often break next. When these cables break, they will snap and forcibly fly out like a broken rubber band. Think about how much it hurts to be snapped by a broken rubber band, and then multiply it by a hundred to account for the size and weight of the garage door cables.

Refrain from parking your car in the garage until the garage door is repaired. Additionally, try not to open and close the door while it’s in this condition. With that amount of possible force coming from the springs or cables, they could potentially damage your vehicle or other property in the garage as well as cause serious injury. It’s especially important that you and your family stay away from these cables or springs until everything is repaired.

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