Liftmaster Error Code 4-6: What does this mean, and how to fix it?

If you have a Liftmaster garage door or opener and you cannot operate the door properly, you may have encountered some alignment issues or obstruction issues. If you receive an error code 4-6 on your Liftmaster garage door, you may wonder what it means and how you can fix this issue; then here are some pieces of information to help you out. However, to ensure the smooth operation of your garage door, you should trust professional companies for garage door repair in Las Vegas.

What are the benefits of self-diagnostics?

Generally, it is a challenging task to diagnose what is happening with your garage door opener. The reason is there are no specific displays or error messages that can tell you what is actually going on with your garage door and garage door opener. This is the reason why most manufacturers include self-diagnostic capabilities within their products. Thus, the onboard controller of your garage door opener can flash its lights in a specific sequence that can indicate a specific issue that needs fixing as soon as possible.

Some garage door openers from Chamberlain and Liftmaster have adjustment arrows that indicate UP and DOWN. Those usually flash in some specific patterns and hence, can indicate a specific issue.

What is the meaning of Liftmaster error code 4-6?

If you receive error codes 4-6, you will see four flashes of the UP button and six flashes of the DOWN button. This error code can happen when you try to close the garage door opener. So, you may wonder what is wrong. The answer is it is related to your garage door safety sensors.

The task of those safety sensors is to make sure that nothing can obstruct the motion of your garage door while it is trying to close or nothing is in its way while it’s closing. They are important by law and also to prevent damage and injury to your property. Moreover, the system of your garage door will not operate correctly without them.

Here are some possible issues that can happen to your garage door safety sensors, such:

• Incorrect installation: Are the sensors wired into your garage door opener? You should properly check to make sure the wires are connected to both the opener and the sensors securely. You should also look closely for any issue, damage or breaks to those wires.
• Not installed: You should check a pair of sensors on either side of the garage door, almost six inches off the ground. If you do not have both or even one of them, you might opt for installing a replacement.
• Obstructed sensor: If you can find out that your garage door sensors are operating correctly, you should check to ensure nothing is blocking any of those sensors. In some cases, debris and dust can cause some issues; thus, you need to clean those sensors on a regular basis.
• Installed in a reverse way: You should check that each safety sensor wire is connected properly to the respective terminals on the garage door opener.
• Misaligned sensors: The sensors of your garage door need to be aligned in the correct way to work properly. Thus, you should check if the receiving sensor has a green light which can indicate that it is aligned properly.

Hence, with these instructions, you can diagnose the error code 4-6 of your Liftmaster garage door and solve the issue as soon as possible. However, if you are confused and need professional help, you can trust Vegas Garage Door Repair completely. You can even trust them if you need durable garage door opener installation in Las Vegas.