CTC Blower Wheel Rubbing or Bearing Failure

Furnace emits a metallic scraping or grinding noise from the blower 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

Loose blower wheel on shaft, Bent blower wheel, Failed blower motor bearings, Foreign object in blower housing

Safety first: Turn off power immediately to prevent further damage.

Steps:

Remove the blower compartment door and inspect the blower wheel and housing.
Look for screws, insulation, or other debris contacting the wheel and remove them.
Check that the blower wheel set screw is tight on the motor shaft and that the wheel is centered in the housing.
If the motor shaft has excessive play or the noise persists, replace the CTC blower motor and wheel assembly as needed.

Medium 3/5

CTC Blower Wheel

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