Lennox Equipment not specified

Lennox Error Code 4000

Equipment not specified:

What It Means

  • User Wi-Fi state change, disabled

Causes & actions from Lennox

How it shows
  • s30 service notification: 4000

This manual entry does not list further causes or actions.

Applicable models & manual sources
Disclaimer: This information is for general reference. Code wording and instructions vary by model. Always follow the service manual for your exact unit.

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