Lennox Equipment not specified

Lennox Equipment not specified Error Code 19

Equipment not specified:

What It Means

  • Economizer fault: F terminal receives 24VAC and error will be displayed

Causes & actions from Lennox

How it shows
  • cs7500 notification display: 19

User can contact the dealer or move this error to the notification screen.

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.

What should you check next?

Continue in ACLogics with guided diagnosis for your equipment and symptoms.

See how guided diagnosis works →