Furnace runs but carbon monoxide detector in the home alarms during operation.
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: Turn off the furnace immediately, evacuate occupants if CO levels are high, and ventilate the home. Contact emergency services or the gas utility if the alarm persists.
Do not operate the Luxaire furnace again until it has been inspected by a licensed HVAC technician who can test for flue gas leakage, inspect the heat exchanger, and verify venting.
Repair Difficulty
Required Part
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