Ariston Delayed Ignition / Combustion Noise

Ariston gas water heater makes loud banging or popping noises 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

Dirty burner causing delayed ignition, Incorrect gas pressure, Poor flame aeration due to blocked air intake, Heat exchanger scaled causing boiling noise

How to Fix / Troubleshooting

Safety first: Turn off gas and power. Combustion adjustments must be done by a qualified gas technician.

  • Clean burner: Remove the burner assembly and clean ports with a soft brush and vacuum. Do not use sharp tools.
  • Check air intake and flue: Ensure both are clear of obstructions.
  • Descale heat exchanger: If popping sounds resemble boiling, have the heat exchanger chemically descaled.
  • Have gas pressure checked: A technician should verify and adjust gas pressure to Ariston specifications.
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Repair Difficulty

Professional Required 5/5

Required Part

Gas Burner Assembly
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