Lennox Ducted Heating

Lennox Error Code LED#1-Slow Flash, LED#2-Slow Flash

Ducted Heating:

What It Means

  • 1.4 - On initial power up the combustion air blower does not energize. - Diagnostic lights flash normal power oonn operation. LED#1-Slow Flash LED#2-Slow Flash

Causes & actions from Lennox

How it shows
  • SureLight board LEDs (DS1/DS2): LED#1-Slow Flash, LED#2-Slow Flash (led1: flashing (slow), led2: flashing (slow))

Possible cause: 1.4.1 Open combustion air blower motor circuit. Corresponding action/comments: ACTION 1 − Check for 120V to combustion air blower. If no power, check wire and connec- tions. Possible cause: 1.4.2 Failed combustion air blower motor. Corresponding action/comments: ACTION 1 − If power is present at blower, replace blower.

Applicable models & manual sources
  • G24M

    1.4 − On initial power up the combustion air blower does not energize. − Diagnostic lights flash normal power oonn operation.. LED#1−Slow Flash LED#2−Slow Flash

    G24M manual, page 31

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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