Lennox Ducted Heating

Lennox Error Code E290

Ducted Heating: Gas furnace (indoor)

What It Means

  • Ignitor circuit fault - Failed ignitor or triggering circuitry.

Causes & actions from Lennox

How it shows
  • Integrated control 7-segment display: E290

Measure resistance of hot surface ignitor. Replace if open or not within specifications. 1-hour soft lockout. Clears when flame has been proven stable.

Other manual wording

SLP98UHV, SLP99UHV

See E 207.

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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