Riello Failed Flame Stabilization

Burner starts and stops repeatedly within a few seconds, never establishing stable flame

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

Incorrect head setting or air band, Dirty nozzle or low pump pressure, Faulty photocell losing flame signal, Turbulent combustion due to blocked head

Safety: Turn off power and fuel.

Steps:

Clean head and nozzle: Remove and clean the Riello combustion head and replace the nozzle.
Check photocell: Clean or replace the flame sensor to ensure a strong signal.
Verify settings: Confirm head position and air band match Riello setup data.

Fine-tuning should be done by a technician with combustion test equipment.

Hard 4/5

Riello Photocell Flame Sensor

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