How to Fix TP Link Deco Flashing Red Light Issue?: A Quick Guide

tplinkdecomeshwifi

Sep 1

3 min read

A TP Link Deco flashing red light usually indicates that your Deco unit is having trouble connecting to the internet or communicating with the main Deco network. This issue can happen because of an internet outage, loose connections, router problems, firmware issues or incorrect network settings.

Before replacing your Deco system. try the following solutions.

What Does a Flashing Red Light Mean?

A red light on a TP Link Deco generally means there is a connection problem. The exact behavior can vary by Deco model. If the red light continues for several minutes then you should troubleshoot the network connection.

1. Check Your Internet Connection

First, check whether your internet service is working.

Connect your phone or computer directly to the existing router.
Open a website and check the connection.
If other devices also have no internet then contact your internet service provider.
If the internet works normally then continue with the Deco troubleshooting steps.

2. Restart Your Deco Unit

A simple restart can resolve temporary network problems.

Turn off the affected Deco unit.
Wait for about one minute.
Turn the Deco back on.
Allow a few minutes for the unit to reconnect.
Check whether the red light disappears.

You should also restart your modem or main router if necessary.

3. Check the Ethernet Cable

A damaged or loose Ethernet cable can prevent the Deco from getting an internet connection.

Remove the Ethernet cable from the Deco and router. Check both connectors for damage. Connect the cable firmly again. If possible, test another Ethernet cable.

If the red light disappears after replacing the cable then the original cable may have been causing the problem.

4. Check the Main Deco

If you have multiple Deco units, identify which unit is showing the red light.

The main Deco should be connected properly to your modem or router. Check the Ethernet connection between both devices.

If the main Deco cannot access the internet then other Deco units may also show connection problems.

5. Update the Deco Firmware

Outdated firmware can sometimes cause network stability problems.

Open the Deco app on your mobile device. Sign in to your Deco account. Check for available firmware updates. If an update is available, follow the instructions in the app.

Keep the Deco powered on during the update process.

6. Move the satellite Deco

If only one satellite Deco is flashing red then its connection to the main Deco may be weak.

Move the affected unit closer to the main Deco. Avoid placing it behind thick walls, inside cabinets or near devices that can interfere with wireless signals.

After moving the unit wait for the network to reconnect.

7. Try TP Link Deco Reset

If the previous solutions do not work, you can try a TP Link Deco reset.

Locate the reset button on the Deco unit. Press and hold it according to the instructions for your specific Deco model. Wait for the unit to restart.

Remember that a factory reset can remove your existing Deco configuration. You may need to configure the network again through the Deco app.

8. Set Up the Deco Again

After resetting the unit open the Deco app. Follow the setup instructions to add the Deco to your network.

Connect the main Deco to your modem or router. Configure your WiFi name and password. Then add your additional Deco units.

Check the LED status after completing the setup.

Conclusion

A TP Link Deco flashing red light usually points to an internet or network connection problem. Start with simple solutions such as restarting the devices, checking cables and verifying your internet connection. If these steps do not work then updating the firmware or performing a TP Link Deco reset may help. Always check the instructions for your specific Deco model before performing a factory reset.