Riello Post-Ignition Flame Dropout

Boiler ignites but then shuts down after a few seconds repeatedly

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 condensate trap causing poor combustion, Faulty ionisation electrode, Incorrect burner pressure, Flue restriction

Safety: Repeated failed ignition can flood the chamber with unburnt fuel. Limit resets and seek professional help.

Clean condensate trap: Remove and clean the condensate trap to ensure proper drainage.
Inspect ionisation electrode: Clean and check positioning as per Riello specifications.
Flue check: Ensure the flue terminal is clear and intact.
Professional burner test: A technician should verify burner pressures and combustion and adjust or repair as needed.

Hard 4/5

Ionisation Electrode

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