Ariston Poor Combustion / Incomplete Burning

Visible yellow or unstable flames observed through the inspection window.

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

Blocked burner ports, Incorrect gas/air ratio, Blocked flue or air intake, Wrong gas type setting

Safety: Poor combustion can produce carbon monoxide. If you suspect this, shut down the furnace and ventilate the area.

Check flue and air intake: Ensure the terminal is clear and flue pipes are intact.
Do not adjust gas settings yourself: Combustion tuning requires specialized instruments.
Schedule immediate service: An Ariston technician should clean the burner and adjust combustion to manufacturer specifications.

Professional Required 5/5

Burner Assembly

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