Saunier Duval
Gas flow resonance / burner noise
Water heater emits a whistling or high-pitched noise when running
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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
Partially blocked burner injectors, Incorrect gas pressure, Loose burner seals, Flue resonance due to incorrect installation
How to Fix / Troubleshooting
Safety first: Turn off gas and power before opening the combustion chamber.
Steps:
- Inspect burner and injectors: Remove the burner and clean injectors with appropriate tools (do not enlarge or damage orifices).
- Check burner seals: Ensure all gaskets and seals around the burner and combustion chamber are intact and properly seated.
- Flue inspection: Verify that the Saunier Duval concentric flue is correctly assembled and supported, with no loose joints.
- Gas pressure: Have a technician check and adjust gas pressure to specification.
Warning: Unusual noises can indicate combustion issues. Always verify safe operation after repairs.
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Repair Difficulty
Hard
4/5
Required Part
Burner Injectors
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