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Sub-Zero Group Owner's App Error E300 or E301


  • How to fix E300 or E301 error in mobile app
  • E-300 or E-301 shown on screen in Sub-Zero Group Owner's App
  • E 300 or E 301 error


  • Router could not be discovered or was lost
  • Router could be reached, but could not communicate


The router could not be found or could not communicate.

  1. Make sure the device has a strong internet connection.
  2. If you use a firewall or similar security, refer to Sub-Zero Group Owner's App - Check the Wireless Security.

See also:

If the error continues to appear after the troubleshooting steps above are complete, contact the Sub-Zero Customer Care Team at [email protected], or call (800) 222-7820, Monday-Friday, 8:00 a.m. - 5:00 p.m. CST for assistance.


Need further assistance? Contact Customer Care at 800.222.7820 or provide your information below and request a Customer Care representative contact you.

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