Ferroli
Kettling / Boiling in Heat Exchanger
Water heater makes loud banging or popping noises during operation.
Advertisements
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.
Advertisements
Possible Causes
Heavy limescale buildup in heat exchanger, Poor water circulation, Incorrect gas rate causing localized boiling, Air trapped in system (for pumped models)
How to Fix / Troubleshooting
Safety: Noisy boiling can indicate overheating. Monitor for any signs of leaks or smells and shut down if in doubt.
- 1. Descale heat exchanger: Arrange for a professional to flush the Ferroli heat exchanger with an approved descaling solution.
- 2. Check flow rate: Ensure adequate water flow through the heater by cleaning filters and fully opening isolation valves.
- 3. Bleed air: On models with internal pumps, bleed air from the system to improve circulation.
- 4. Gas rate check: A technician should verify burner pressure and adjust if necessary to prevent localized boiling.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Primary Heat Exchanger
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements