Comfortmaker Overheating Electrical Component or Motor

Persistent metallic or electrical burning smell during furnace operation.

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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.

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Possible Causes

Overheating blower motor on Comfortmaker furnace, Failing motor capacitor, Loose electrical connection causing arcing, Wire insulation contacting hot metal

How to Fix / Troubleshooting

Safety: Turn off power immediately if you smell electrical burning. Do not continue operating the furnace.

Steps:

  • Inspect blower compartment: Look for discolored or melted wires, especially near the blower motor and capacitor.
  • Check motor temperature: Carefully touch the blower motor housing (it will be warm but should not be too hot to touch briefly). Excessive heat indicates a problem.
  • Inspect capacitor: Look for bulging or leaking on the capacitor can.

When to call a technician: Electrical burning smells require prompt professional diagnosis to prevent fire or further damage.

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Repair Difficulty

Hard 4/5

Required Part

Blower Motor Capacitor
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