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Troubleshooting and Support


1. Quick Start (“Get Started”)

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

  2. Load paper: open the cover/slider, place the label roll with the label side facing outwards according to the manual (usually with the outside facing the cover/first label out through the slot). Close securely.

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

2. LED indicators / status 

  • Green steady: Power on / battery OK.

  • Blue: Bluetooth connected / printing active.

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

3. Common problems + step-by-step solutions

A. The printer cannot be found via Bluetooth

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

  2. Close and reopen the NIIMBOT app, tap Connect → search for the device again. 

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

  4. For iOS: make sure the app has Bluetooth/Network permissions in Settings.

  5. Try another phone to determine whether the problem is with the printer or the phone.

B. The printer does not print / nothing happens when you press "Print"

  1. Check the battery level and charge if necessary.

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

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

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

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

  1. Use only recommended NIIMBOT labels (otherwise there is a risk of damage to the printhead).

  2. Carefully clean the printhead as shown in the video below.

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

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

D. Paper jam / paper stuck

  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 near the cutter. 

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

 

4. Firmware & Drivers

  • Firmware updates are typically performed via the NIIMBOT app; please follow the in-app instructions. 

  • Windows support: Some models (e.g., B21/B1/B3S) have Windows apps and drivers available for download. See the NIIMBOT 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.

  • Flashing red + "No paper" → Check the paper supply and that the cover is closed. 

  • Bluetooth connected but no print → Pair again, restart the app and printer. 

 

6. Cleaning video

 

 

Are you still unable to get the printer working?

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

We are happy to help you until your NIIMBOT printer is working properly.