Takagi Abnormal Combustion / Burner Noise

Takagi water heater runs but produces a rumbling or roaring flame sound.

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

Incorrect gas pressure, Dirty burner ports, Blocked or restricted air intake, Incorrect orifice for gas type

How to Fix / Troubleshooting

Safety first: Turn OFF gas and power. Abnormal combustion can produce carbon monoxide and damage the heater.

Steps:

1. Inspect air intake: Ensure the intake terminal is clear and has proper clearance.
2. Clean burner: After cooling, remove the burner assembly per the service manual and clean dust and debris from burner ports with a soft brush and vacuum.
3. Professional combustion check: Have a licensed technician verify gas type, orifice size, and manifold pressure, and perform a combustion analysis. Adjustments or part changes may be required.

Repair Difficulty

Professional Required 5/5

Required Part

Burner Assembly

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