Crown Combustion Fan Mechanical Failure

Boiler is very noisy, with a grinding or rattling sound emanating from the fan area.

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

Worn fan bearings, broken fan blades, debris in the fan housing, or loose mounting screws.

Safety: Turn off power and gas before opening the combustion compartment.

Inspect fan: Remove the front panel and visually inspect the combustion fan on the Crown boiler. Look for broken blades or foreign objects.
Check mounting: Ensure all fan mounting screws are tight and that the housing is not vibrating against other components.
Debris removal: Carefully remove any loose debris from the fan area without bending the blades.
Replace if needed: If the fan still makes grinding noises, the motor bearings are likely failing, and the entire assembly should be replaced by a qualified technician.

Hard 4/5

Combustion Fan Assembly

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