How to troubleshoot "Printer status abnormal" error in Flashlabel Pro App (cannot print)

Symptom

Flashlabel Pro App shows the prompt Printer status abnormal, with a variable error code. 

Step-by-step Troubleshooting

1. Basic restart sequence (first try)

   1. Close the Flashlabel Pro App completely and power off the printer.
   2. Power the printer ON, wait for 10 seconds.
   3. Reopen the App and test printing.

   If this basic restart fails, proceed with the steps below.

2. Reboot your mobile phone Bluetooth / system connection cache on the phone may get stuck. Power off and restart your phone fully, then re-open the App and reconnect to printer.
3. Check mobile low power / battery saver mode Low battery or Low Power Mode often blocks stable Bluetooth connection.
   • Charge your phone.
   • Turn OFF Low Power / Battery Saver mode.
   • If turning off low power mode still does not work, restart your phone to fully disable the low power system service.

4. Reset the printer and clear old Bluetooth pairing Reset your printer to restore default connection settings.

   Reference guide: https://knaon.com/blogs/knaon-y813-bt/how-to-reset-printer After printer reset: delete the old paired printer record from your phone Bluetooth list, then re-pair with the printer inside Flashlabel Pro App.

5. Reinstall Flashlabel Pro App Corrupted App local cache can cause status reading failures. Uninstall the App, download the latest Flashlabel Pro version and reinstall, then reconnect printer.

Additional Tips

• Do not use the phone system Bluetooth page to connect printer. Pair and connect printer only inside Flashlabel Pro App.
• Keep the printer and phone within 3 meters, remove obstacles between them for stable Bluetooth communication.
• If all above steps are done and error still appears, please record a short video showing the error popup and send it to Label Printer Support Team for further diagnosis.