LED Colors (Explained)
During initial setup of a device these are the usual LED specifications:
- White pulse: Start-up (happens when the Growlink is first powered on or when it’s reset)
- Flashing blue: Listening Mode, waiting for Wi-Fi credentials
- Flashing green: Connecting to Wi-Fi network
- Flashing cyan: Connecting to Growlink Device Cloud. Connected to the network, but not necessarily the internet yet.
- High-speed flashing cyan: Growlink Device Cloud handshake
- Breathing cyan: Connected to Growlink Device Cloud
- Flashing magenta: Receiving new firmware update over-the-air (OTA)
- Breathing magenta Safe mode, connected to Particle Device Cloud but user firmware not running
Error Codes
Hopefully, you never see these colors but here are the error LED color codes:
- Flash red twice: Connection failure, no internet connection (technically, can’t reach Google)
- Flash red three times: Connection failure, Cloud is unreachable
- Orange flashing: Connection failure, bad handshake
Factory Reset & Bootloader
- Solid white: Factory reset started
- High-speed flashing white: Flashing code from factory reset memory
- Flashing yellow: Bootloader mode, waiting for code over USB or JTAG