ZT Series LCD Error Invalid Channel or Invalid Security Mode

Article ID: 91841734



Topic or Information

Printer is displaying or  has a QR Code Error

Invalid Security Mode - QR code error "WlanInvalidSecurityMode"

Invalid Channels - QR Error Code "WlanInvalid Channels" 

Applies To

ZT Series Printers using the Wireless Communications Option


WlanInvalid Channels – This means that you have selected a channel which is invalid per you certified country list. In manufacturing we set a region, and the customer will set a country. If the channel selected is invalid for the new country you will see this error. 

WlanInvalidSecurityMode – This occurs when you try to use a security mode (WEP, WPA, etc) that is currently disabled. The easiest way to fix this is to default the WLAN settings and re-setup.

Additional Information

Defaulting Network Settings Read More>>

Viewing the Network Configurations Read More>>


+ Product Codes

  • All Surface RFID Label Solution
  • ZT400 Series Industrial Printers
  • ZT400 Series RFID Printers
  • ZT410 Industrial Printer
  • ZT410 RFID Industrial Printer
  • ZT420 Industrial Printer
  • ZT420 RFID Industrial Printer
  • ZT500 Industrial Printers
  • ZT510 Industrial Printer
  • ZT600 Series Industrial Printers
  • ZT610 Industrial Printer
  • ZT620 Industrial Printer