Display shows E02, burner starts then stops, indicating flame loss during run

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

Unstable oil pressure, Dirty nozzle, Faulty photocell, Combustion air issues (draft changes, blocked intake)

Safety: Shut off power and fuel before opening the burner.

Steps:

Check oil pressure and filters: Replace filters and bleed the Riello pump. Have a technician verify pump pressure.
Clean or replace photocell: Ensure the flame sensor is clean and properly aligned.
Inspect air path: Check intake and flue for obstructions. Ensure adequate combustion air supply to the room.

Persistent E02 requires a combustion analysis and burner tuning.

Hard 4/5

Riello Fuel Pump

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