Brötje
Gas/air flow resonance or restriction
Furnace emits whistling or high-pitched noise during operation
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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 gas injector or burner, Incorrect gas pressure, Resonance in flue system, Fan speed control issues
How to Fix / Troubleshooting
Safety: Gas and combustion adjustments must be done by qualified personnel.
- 1. Check flue terminal: Ensure the Brötje flue terminal is not partially blocked or restricted by covers or objects.
- 2. Listen at fan and burner: Identify whether the noise originates from the fan, burner, or flue.
- 3. Burner cleaning: Have a technician clean the burner and check gas injectors for partial blockage.
- 4. Combustion check: A professional should verify gas pressures and adjust the gas valve to eliminate resonance.
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Repair Difficulty
Hard
4/5
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