Riello Vibration / Imbalance

Furnace vibrates excessively when burner is running

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

Unbalanced fan wheel, Loose burner mounting flange, Misaligned blast tube, Worn motor bearings

Safety: Turn off power. Do not touch moving parts.

Steps:

Check burner mounting: Ensure the Riello burner flange bolts are tight and gasket is intact.
Inspect fan wheel: Look for missing blades or heavy dirt buildup. Clean or replace as needed.
Check motor bearings: Spin the motor shaft by hand (power off). If rough or noisy, the motor should be replaced.

Hard 4/5

Combustion Fan Motor

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