Ideal Combustion Gas Spillage / Heat Exchanger or Flue Fault

Furnace causes carbon monoxide alarm to activate when running

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

Cracked heat exchanger, blocked flue, negative pressure in building drawing flue gases back, incorrect flue installation on Ideal furnace

How to Fix / Troubleshooting

Critical safety warning: A carbon monoxide alarm indicates a potentially life-threatening situation. Evacuate the building and seek fresh air immediately.

Immediate actions:

Shut down furnace: Turn off power and gas to the furnace.
Ventilate: Open windows and doors.
Evacuate: Leave the building and call emergency services or a qualified gas engineer from a safe location.
Do not use furnace: Do not restart the Ideal furnace until it has been thoroughly inspected and declared safe.

Repair Difficulty

Professional Required 5/5

Required Part

Heat Exchanger

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