Raypak
Flue Gas Spillage / Venting Problem
Boiler emits exhaust smell or flue gas odor in mechanical room.
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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
Blocked or undersized vent, Negative pressure in mechanical room, Cracked heat exchanger leaking flue gases, Improper vent termination
How to Fix / Troubleshooting
Critical safety: Flue gas spillage can expose occupants to carbon monoxide. Turn OFF the boiler immediately and ventilate the area. Do not operate the boiler until the cause is corrected.
Steps:
- Inspect the vent system for blockages, disconnections, or corrosion.
- Ensure combustion air openings are not blocked and that the room is not under strong negative pressure from exhaust fans.
- Have a qualified technician perform a combustion analysis and inspect the heat exchanger for cracks.
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Repair Difficulty
Professional Required
5/5
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