Furnace shows E09 and shuts down, often after running for a short period.
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.
Possible Causes
How to Fix / Troubleshooting
Critical safety: A tripped rollout switch indicates flames or hot gases leaving the burner area. This can be extremely dangerous. Do not repeatedly reset rollout switches without finding the cause.
Steps:
- Visual inspection: With power and gas off, remove the burner access panel. Look for signs of scorching, melted wiring, or discoloration around the burner compartment and rollout switches.
- Check burners: Inspect burners for heavy rust, debris, or misalignment. Clean or replace burners as needed following Atlantic service instructions.
- Inspect flue and heat exchanger: Check for obvious blockages in the flue. A detailed heat exchanger inspection (for cracks or internal blockage) should be performed by a qualified technician.
- Reset rollout switch: If your Atlantic model uses manual-reset rollout switches, press the reset button once after the furnace has cooled. If it trips again, shut the system down and call a professional.
Do not: Do not bypass rollout switches or operate the furnace with panels removed.
Repair Difficulty
Required Part
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