Westinghouse Overheating blower motor or electrical component

The furnace blower runs, but there is a strong burning or electrical smell from the vents.

Safety Warning

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

Blower motor bearings failing, Motor windings overheating due to a seized wheel, Loose electrical connection arcing at the IFC or contactor, Foreign object in the blower housing

How to Fix / Troubleshooting

Immediate Safety: Turn off power at the breaker and service switch. Do not continue to run the furnace if you smell burning plastic or electrical insulation.

Steps:

Remove the blower compartment door and visually inspect the blower motor and wiring for discoloration, melted insulation, or smoke residue.
Spin the blower wheel by hand; if stiff or noisy, the motor bearings may be failing, and the motor should be replaced.
Check all wire connections at the IFC and junction box for tightness and signs of arcing (blackened or pitted terminals).
Remove any debris from the blower housing.
If the smell persists after cleaning and inspection, have a technician test the motor's amp draw and replace the motor or board as needed.

Repair Difficulty

Hard 4/5

Required Part

Blower Motor Assembly

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