warning TP Link

Error Code No LED lights after setup

Indicates that the extender has not established a successful connection to the host router. Possible configuration or communication issues.

? What Causes This

The device is unable to connect to an existing network (host router). Could be due to faulty WPS button press sequence, incorrect wireless SSID/password entry.

How to Fix It

Reset the settings and perform setup again following proper instructions.

Source: page 30 of the official manual

From the manual

Manual page 30 — TP Link error No LED lights after setup

This error code appears in:

TP Link TL Wa850re 300mbps Wifi Range Extender