LED Blinking Patterns

The LED indicator on your Sensibo device shows how far it got in connecting to the Sensibo servers. Here’s a detailed guide to understanding what each pattern means:

Which devices

This guide is for Sensibo Sky, Sensibo Air and Sensibo Air PRO. Sensibo Pure and Sensibo Elements have different lights.

LED Pattern Guide

One Glow, Then No Light

• After the blinks, the LED glows once and then turns off: the device is connected to the Sensibo server
• No light is the normal state during regular operation

No light, but the device shows as offline?

The device only shows its blinks after it is powered up. A device that was connected and later lost its WiFi or server connection can stay dark, so no light alone doesn’t mean the device is online.

If the app shows the device as offline and the LED is dark, unplug the device, wait 10 seconds and plug it back in. The blinks then show which step it gets stuck on.

If the device doesn’t light up at all after you plug it back in, check that it’s properly connected to a power source.

One Glow While in Use

• The LED glows once whenever the device sends a command to your AC
• This is normal and confirms the command was sent

One Blink (Every 2 Seconds)

• Device is in setup mode
• Action needed: Launch the Sensibo app and follow the setup wizard
• The wizard will help you provide WiFi network credentials

Two Blinks (Every 2 Seconds)

• Device is attempting to connect to your router
• If stuck at this stage:
  • Check if the WiFi password is correct
  • Verify you’re not trying to connect to a 5GHz network (not supported)
  • Move the device closer to your router

Three Blinks (Every 2 Seconds)

• Device is connected to your router and is contacting the Sensibo server
• If stuck at this stage:
  • Check that your network has internet access
  • Check your DNS configuration and that your router can resolve domain names
  • Check that your network doesn’t block secure web traffic (HTTPS, port 443)

Four Blinks (Every 2 Seconds)

• Sensibo Air and Air PRO: the device is connecting to the Sensibo server
• Sensibo Sky: the device is installing a firmware update
• If stuck at this stage for more than a few minutes:
  • Verify ports 80 and 443 are open to *.sensibo.com
  • Check for firewalls blocking the connection

Steady Light

• The LED stays on and never turns off
• This is not a normal pattern. Please contact our support team

Need More Help?

If you’re experiencing persistent issues with your device’s connection, please refer to our Network & WiFi Troubleshooting guide for additional assistance.