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Sub-Zero Group Owner's App Error E400


  • How to fix E400 error in mobile app
  • E-400 shown on screen in Sub-Zero Group Owner's App
  • E 400 error


  • Appliance could not be identified
  • Appliance not supported for connectivity


The app identified the appliance as not able to connect. Make sure that the appliance can be connected. See Connected Ready Appliances.

  1. For Cove appliances, confirm the Connect setting is turned on. See Cove Connected Appliance Use.
  2. If appliance controls have been recently replaced or updated, the connected module may require an update.

See also:

If the troubleshooting steps above do not resolve the issue, 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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