Lennox Equipment not specified

Lennox Equipment not specified Error Code 18

Equipment not specified:

What It Means

  • user editable

Causes & actions from Lennox

How it shows
  • cs7500 notification display: 18

Touch either done to clear the reminder or remind later button.

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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