N831 Series - 4K 8-Channel Wired Network Video Recorder​ - Troubleshooting Guide

If you're experiencing issues with your N831 Series - 4K 8-Channel Wired Network Video Recorder, follow these steps to resolve potential problems.

For additional support, check out the User Manual, the FAQs or the Password Recovery instructions.

I have forgotten the NVR's password:

If you forget the password after changing it:

• Use the Password Recovery feature to reset the password. For detailed instructions, refer to the Password Recovery Guide.
• Restore the device to factory settings. For full instructions, refer to 15.4.3.2 Restoring Default Settings, page 89 in the NVR's manual.
• To avoid future issues, choose a password that is both easy to remember and secure.

Hard Disk Drive Not Detected:

If the hard disk drive is not detected:

• Ensure the hard disk drive is securely connected, refer to 14.4 Replacing the Hard Disk Drive (HDD), page 66 in the NVR's manual.
• Check that the hard disk drive ports on the main board are in good condition.
• Ensure the hard disk drive you are using is designed for video surveillance to ensure stable operation.

No Recorded Information During Playback:

If no recorded footage is found during playback:

• Verify that the hard disk drive's data cable is properly connected, refer to 14.4 Replacing the Hard Disk Drive (HDD), page 66 in the NVR's manual.
• Confirm that the system time has not been altered.
• Ensure the hard disk drive you are using is designed for video surveillance to ensure stable operation.
• If the issue persists, inspect the hard disk drive for possible damage.

No Video Signal / Output is Abnormal:

If there is no video signal or the output is abnormal:

• Check that the network cable is securely connected.
• Ensure that the NTSC/PAL system settings are consistent on both ends.

Cannot Log in to the Lorex Cloud Client:

If you cannot log in to the Lorex Cloud Client:

• Verify that the network configuration is correct.
• Ensure the Network Connection (RJ45) port is properly connected.
• If network login requires a password, confirm that the correct credentials are entered.

Motion Detection Not Working:

If motion detection is not functioning:

• Verify that the motion detection time, area, and sensitivity settings are correctly configured, refer to 7 Motion Detection Setup, page 29 in the NVR's manual.

NVR Buzzer Keeps Beeping:

If the buzzer continues to beep:

• Check the warning alerts settings (refer to 7 Motion Detection Setup, page 29 in the NVR's manual) and motion detection settings (refer to 7 Motion Detection Setup, page 29 in the NVR's manual).
• Ensure there are no constantly moving objects in the detection area.

Device Still Recording After Selecting Stop Recording:

If the device continues to record after selecting Stop Recording:

• Stopping manual recording does not affect scheduled recordings. To stop scheduled recordings (refer to 14.1 Configuring the Recording Schedule, page 62 in the NVR's manual), adjust the recording status or disable the channel (refer to 9 Recording Settings, page 40 in the NVR's manual).

Deleting Specific Video Records:

If you want to delete specific video records:

• For security reasons, individual video records cannot be deleted. To remove footage, you must format the entire hard disk drive.

Device Overheating:

If you are concerned about heat dissipation:

• Place the device in a well-ventilated area to prevent overheating and maintain optimal performance.