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Troubleshooting and Support

1. Quick Start ("Getting Started")

  1. Fully charge the device before first use (2–3 hours depending on model).

  2. Load paper: open the lid/slider, place the label roll with the outside of the label as per the manual (usually the outside facing the lid / first label out through the slot). Close properly.

  3. Install the NIIMBOT app (App Store / Google Play) and turn on Bluetooth on your phone.

2. LED indicators / status

  • Solid green: Power on / battery OK.

  • Blue: Bluetooth connected / printing active.

  • Red/blink: No paper / lid open / overheating / low battery (depending on blink pattern). Refer to your model manual for exact patterns.

3. Common problems + step-by-step solutions

A. Printer not found via Bluetooth

  1. Turn off and on both the printer and the phone's Bluetooth.

  2. Close and open the NIIMBOT app, press Connect → search device again.

  3. If pairing requires a PIN, try 0000 or 1234.

  4. For iOS: check that the app has Bluetooth/Network permissions in Settings.

  5. Try another phone to determine if it's the printer or the phone.

B. Printer not printing / nothing happens when you press “Print”

  1. Check battery level and charge if necessary.

  2. Check that the paper is loaded correctly and that the protective tape (if any) has been removed.

  3. Calibrate the paper gaps (Press the power button once while on to run calibration).

  4. If Bluetooth shows connected but the app says "unresponsive" — disconnect and re-pair.

C. Print quality is poor (faded, streaks, uneven)

  1. Only use recommended NIIMBOT labels (otherwise risk of printhead damage).

  2. Gently clean the printhead according to the video below.

  3. Check that the label/material type in the app matches the actual roll.

  4. Ensure that the paper is correctly seated in the printer.

D. Paper jam / stuck paper

  1. Turn off the printer.

  2. Open the lid and carefully remove the paper roll. Check that no label edges are stuck in the slot or at the cutter.

  3. If the cutter is blocked, clean and remove any remaining label pieces. Restart.

4. Firmware & Drivers

  • Firmware updates are normally done via the NIIMBOT app; follow the in-app instructions.

  • Windows support: some models (e.g. B21/B1/B3S) have Windows apps and drivers available for download. See NIIMBOT's download page for the correct driver for your model. Download drivers here

5. Error codes & what to do

  • No LED / no power → Check charging cable, port, and battery.

  • Red flashing + “No paper” → Check paper feed and that the lid is closed.

  • Bluetooth connected but no print → Re-pair, restart app and printer.

6. Cleaning Video

Still can't get the printer to work?

If the above steps do not solve the problem, you are always welcome to contact us for further support.
📧 E-mail: hello@labelmate.se

We are happy to help until your NIIMBOT printer works as it should.