TP-Link's LED guide lists pulsing yellow as a reset state on several common Deco models.
What Pulsing yellow light means
TP-Link's LED guide lists pulsing yellow as a reset state on several common Deco models.
What you may notice
- The unit was just reset
- Network settings are unavailable
- The light later changes to setup blue
- The app may show the unit offline
Most likely causes
- 01The reset button was pressed
- 02A factory reset is processing
- 03A recovery sequence is underway
- 04The unit is stuck during reset
Safe checks, in order
Start with the simplest non-invasive check. Stop as soon as the error clears; repeated resets can hide a condition without correcting it.
Wait
Allow the reset to finish without unplugging the unit.
Watch for setup blue
A pulsing-blue state indicates it is ready to configure again.
Use the app
Re-add the unit only after reset is complete.
Check power if stuck
Verify the supplied adapter and outlet if the state never changes.
Know where to stop
A factory reset erases local configuration. Do not press reset repeatedly or interrupt the process.
When to call a technician or support
Contact TP-Link if pulsing yellow never transitions after adequate time with stable power.
When you call, have the exact product or vehicle model, model year where relevant, the complete code or symbol, and when it appeared.
Where this information came from
We use the manufacturer's current published guidance as the starting point, then organize it into a safer, beginner-friendly sequence.
TP-Link Support — Deco LED color meanings Source last checked August 16, 2026. Manufacturer instructions and model manuals take priority over this independent summary.