How To Fix LOS Light Blinking Red on Huawei Router?

How To Fix LOS Light Blinking Red on Huawei Router? With regards to internet connectivity, Huawei routers are well-known for their reliability and high-performance capabilities.

LOS (Loss of Signal) lights on routers often indicate a problem with their connection to the network or external factors affecting their reception, which may cause users concern.

In order to ensure uninterrupted service and restore seamless internet access, understanding and solving LOS blinking red issues on Huawei routers is crucial.

Let’s take a closer look at why the Huawei router’s LOS light blinks red and what we can do to resolve it.

Following these steps will resolve the issue and restore the Huawei router’s connection to its optimal state, ensuring users are connected to the internet reliably and steadily. # LOS Light Blinking Red on Huawei Router

Los light blinking red on Huawei router

You can check the status of your connection between your router and the upstream device with the LOS (Loss of Signal) light on your Huawei router.

A blinking red LOS light indicates the router is having trouble receiving the signal. # Los light blinking red on Huawei router

  • Pending Bills: If you have unpaid bills, your internet connection may temporarily be restricted, causing the LOS signal to blink red.
  • ISP Site Issues or Planned Maintenance: It may be necessary for your internet connection to undergo maintenance with your ISP.
  • Router or Cabling Damage: When pins or fiber optics are damaged in a router or cabling infrastructure, the signal will be lost, resulting in a red blinking light.
  • Misconfigured Router Settings: An incorrect router configuration or an inappropriate setup may disrupt signal transmission and cause the LOS to blink red.
  • Wrong Connected Cables: When cables and connectors are not connected properly, signal loss can occur and LOS indicators may appear.
  • Damaged Cables: The LOS indicator may illuminate when there is a cut or break in the cable, disrupting the signal.

The following methods can be used to resolve this issue:

  1. Check Fiber Cable for Damage: Check for breakages or cuts in the fiber cable that might compromise the signal.
  2. Fiber Cable Connection: Check that the fiber cable connecting the router to the network is connected properly.
  3. Reset router settings to default: If the issue persists, your router may need to be reset to its default settings.
  4. Examine ISP-related or Billing issues: If you have pending bills or your ISP is undergoing maintenance, these could be contributing to the problem.
  5. Power Cycle: A power cycle may be able to resolve temporary problems that are causing the LOS to blink red. To do this, locate the power cord connecting your router and unplug it. Let it stand for a few seconds then plug it back in.
  6. Updating Software/Firmware of Router: Make sure the software or firmware on your router is updated.

It’s best to contact your service provider if the problem persists after you have tried these steps, even if they have already been tried. # Los light blinking red on Huawei router

What is LOS Light on Huawei Routers?

There is an indicator light on Huawei routers called LOS, which stands for “Loss of Signal.” Its primary purpose is to inform users if there is a connection problem with their internet connection.

When in normal mode, this little LED light stays solid green or is shut off, depending on the router model.

If the light blinks red, on the other hand, this indicates that there is a problem with the connection between the Huawei router and its upstream device.

These devices are typically modems and DSL connections, which are connected via an Ethernet cable.

The blinking red light is a signal that tells you that there is a problem that needs to be addressed. By understanding what the blinking red light is telling you, you will be able to take appropriate action in order to resolve the issue.

How To Fix LOS Light Blinking Red on Huawei Router?

There are many options when it comes to solving the problem, and if you already know what is causing the problem, then you can use all of these solutions for a while until you find one that works.

Now that you know what is causing the problem, let’s look at the solutions. There are many solutions depending on what is causing the problem.

Check your Cable Connection

Your router should be connected to the internet via a cable connection. If there is a problem connecting to the internet, you will see the LOS indicator blinking on your router.

You should check your cable connection to ensure that your router is connected to the internet.

  1. If your Huawei router is not connected to your ISP equipment or a wall jack, check that it is.
  2. There should be a secure connection between the cables at both ends.
  3. In the event that the cables are loose, remove them and then reinsert them in order to make sure they are tightly connected.
  4. It is important to check the cables for any physical damage, such as cuts or breaks, so they can be replaced as necessary.

Power Cycle Your Huawei Router

When you are experiencing internet connection problems, one of the most common ways to fix them is to restart your router or do a power cycle.

When you restart your router, you can resolve any temporary glitches that might be causing your LOS to blink red.

Here is how you can restart your router:

  1. Your router is connected to a power outlet via a power cord that can be found near the cord.
  2. Remove the power cable from the router and turn it off by unplugging it.
  3. Let’s wait a little longer after the first 20-30 seconds.
  4. Make sure that the power cord of the router is plugged back in.
  5. Before the router is able to establish a connection, it may take a few minutes before it lights up.
  6. In addition, you can turn your router off and on again by holding down the power button on your router for 30 seconds.

Upon restarting the system, if the LOS (Loss of Signal) indicator remains on, proceed to the next step in order to resolve the issue.

LOS Light Blinking Red on Huawei Router

Reset your Huawei Router

There is a possibility that the LOS indicator of your router will flicker if your network settings are incorrect.

You will find specific instructions in the router’s manual on how to set it up. The best way to solve your router’s problem is to reset it to factory settings and see if that helps.

Here’s how to do it:

  1. You will find a reset hole or a reset button located adjacent to the ports on your Huawei router.
  2. Press the reset button for about 30 seconds after inserting a paper clip or similar object into the hole.
  3. Release the button when you have finished the action.
  4. Using an Ethernet cable or Wi-Fi, you can now connect to your network hub.
  5. A web browser can be used to access the router’s configuration page by entering its default gateway IP address.
  6. A username and password are required for accessing the router’s administration page.
  7. The router’s settings should be updated whenever firmware updates are available.
  8. If you have saved your adjustments, restart your router once they have been saved.

Check for Damaged Pins

You should check your router for damaged pins if you receive the LOS (Loss of Signal) alert. If your Huawei router’s pins are bent, you can try to fix them, otherwise you’ll need to replace it.

Here are some steps you can take to check your router’s pins:

  1. Disconnect all cables from your modem/router and connect it to the ethernet port.
  2. Plug the pins into the cable ends to ensure they are inserted properly.
  3. Make sure there are no bends, damages, or rust on the pins in the next step.

If the issue still persists, you’d just be better off purchasing a new router if the LOS signal still appears.

You can check if the issue has been fixed by restoring the pins with tweezers or any other tool. Nevertheless, the circuit board replacement could be extremely complicated.

Settle Your Overdue Bills

When payments have been overdue for a long time, ISPs have disabled your account. If your Internet service provider warns you and disables your connection immediately, or if they give you a grace period of several months, they may disable your connection.

If your router displays the LOS (Loss of Signal) indicator, you must pay your internet bill immediately.

Keeping a calendar and reminder app on your smartphone can help you avoid late fees if you have an overdue payment with your Internet service provider (ISP).

After being suspended or denied payment, you will need to contact your internet provider (ISP). He or she will explain how to resolve the issue. If there are no pending bills, you can continue.

Why is my Huawei router showing a red light?

Here are some possible reasons why your Huawei router may display a red light:

  • High Temperature: Inside the device, the temperature is high.
  • SIM Card Issues: A router issue prevented the SIM card from being recognized. PINs, PUKs, and SIM locks may be used to protect SIM cards.
  • Network Registration Failure: Although the SIM card is recognized, the device is unable to register with the network.
  • No Internet Connection: There is no Internet connection available on the router.

It is important to ensure the temperature of your Huawei router is correct, the SIM card is correctly inserted and unlocked, and your internet connection is active in order to fix a red light on your router. Should the problem persist, you may need to contact your service provider.

How do I reset my Huawei router to default settings?

There are several methods you can use to restore the default settings of your Huawei router:

Method 1: Through the Reset Hole

  1. Ensure the router is plugged into a power source and wait for it to start.
  2. To reset the router, press and hold the reset hole (RESET or ) with a needle-shaped object.
  3. After the router is restarted, if the indicator turns red, it indicates that factory settings have been restored.

Method 2: By Pressing the H (or Hi) Button

  1. Ensure the router is plugged into a power source and wait for it to start.
  2. The indicator will turn off after more than 10 seconds of holding the H (or Hi) button.
  3. A red indicator indicates that the router has been reset to factory settings after turning red again.

Method 3: Using the AI Life App

  1. You will need to connect your phone to your router’s wireless network.
  2. Touch the corresponding router in the AI Life App to access the router management page.
  3. To learn more about HarmonyOS Connect, click Show more.
  4. You can access the Device information screen by clicking the arrow next to the router name, and selecting Factory reset > RESTORE FACTORY SETTINGS.

Method 4: Through the Web-Based Management Page

  1. Using either a network cable or a Wi-Fi connection, connect your mobile device or computer to the router’s Wi-Fi network.
  2. Then use your phone or computer’s browser to enter the router’s IP address, management password, and IP address in the address box (printed at the bottom of the router).
  3. To switch to the desktop version, touch the upper right corner of your phone.
  4. You can restore to factory settings by tapping More Functions > System Settings > Back up & Restore > Factory Reset.

It is important to note that after you restore the router’s factory settings, you will lose the router’s original configuration.

You will have to reconfigure the router before you may connect to the Internet.

How to Fix Jio Fiber Router Red Light Blinking?


An intermittent network connection and inconvenience can occur when the LOS light on a Huawei router begins to blink red.

However, by understanding potential triggers, users can troubleshoot the problem and are able to resolve the issue.

In most cases, Huawei routers with red blinking LOS lights can be corrected as a result of systematic checks, such as ensuring that the network signals are being received properly, addressing external interference, and addressing environmental factors.