What It Means
- GF Flame Fail In Run Mode
Lennox Equipment not specified
Lennox Error Code 273
Equipment not specified:
Causes & actions from Lennox
How it shows
- iComfort S30 alert: 273
Priority condition: Service Urgent The furnace flame is going off during a heating cycle. The system will go into Watchguard mode. • Check micro-amperes of flame sensor using thermostat or control diagnostics. • Clean or replace sensor. • Measure voltage of neutral to ground to ensure good unit ground. • Clean face of burner assembly.
Applicable models & manual sources
- iComfort S30
GF Flame Fail In Run Mode
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.
