Boiler is very noisy during operation, with whistling or roaring from the burner area.
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
How to Fix / Troubleshooting
Safety: Abnormal combustion noise can indicate unsafe operation. Turn off the boiler and do not use it until checked.
Steps:
- Check flue terminal: Ensure the flue outlet and air intake are clear.
- Visual burner check: With power off and cooled, inspect the burner surface for debris or damage.
Professional service: Gas valve adjustment and combustion tuning must be performed by an authorized Attack technician with a flue gas analyzer.
Repair Difficulty
Required Part
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