E8
Frigidaire
Flame Detected with Gas Off / False Flame Signal
Furnace shows E8 and shuts down; may run blower only
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Shorted flame sensor to ground, Moisture or soot on burner assembly, Faulty control board flame circuit
How to Fix / Troubleshooting
Safety: Turn off power and gas before inspecting burners.
- 1. Inspect flame sensor wiring: Remove the burner door and locate the flame sensor wire. Ensure insulation is intact and the wire is not pinched or touching the burner or cabinet.
- 2. Clean burner area: Check for heavy rust, soot, or moisture around the burners and flame sensor. Clean with a soft brush and vacuum. Address any water leaks from the flue or condensate system.
- 3. Clean flame sensor: Remove and gently polish the sensor rod with fine steel wool, then reinstall.
- 4. Reset power: Restore power and gas, then call for heat. If E8 returns immediately before ignition, the control board may be falsely sensing flame.
- 5. Professional diagnosis: A technician should measure microamp flame signal and verify the control board operation. Replace the integrated furnace control if confirmed faulty.
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Repair Difficulty
Hard
4/5
Required Part
Integrated Furnace Control Board
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