Green light on: sufficient power, can print normally.

Green blinking: Charging.

Red blinking: Low battery, please charge in time.

Red light on:
Check whether there is warning on the App. for example: lack of paper, low power, printer not fully closed, print head overheated.
1. If the app prompts “No paper in the printer”, please follow the steps below.
Please install the paper roll correctly, pull the paper out, and then close the paper tray.

If the problem still persists, please follow the steps below.
First, turn the printer on without putting in any paper.
Second, press and hold the power button for 10-15 seconds until the indicator light flashes twice, and then release the power button to finish the paper learning process.
Finally, reload the paper and long press the power button to turn on the printer.

2. If the app prompts “Printer cover open”, please follow the steps below.
Follow the instructions in the app to close the printer cover firmly.

If the problem still persists, please double-click the printer power button to print the self-test page, and then take a picture of it and send it to us. We will confirm whether the problem you are experiencing can be solved by upgrading the firmware.

3. If the app prompts “Print head overheating”, please turn off the printer for about 15 minutes to allow the print head to cool down for a while, and then print again.