Franke Overheating Motor / Electrical Insulation Breakdown

Garbage disposal emits a burning smell or electrical odor when running.

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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

Motor overloaded by jam, Failing motor windings, Foreign object causing friction, Loose electrical connection arcing in junction box

How to Fix / Troubleshooting

Safety first: Immediately turn OFF the disposal and the breaker. Do not continue to run a unit that smells like burning.

  • Check for jams: Use an Allen key to ensure the rotor spins freely. Remove any debris from the chamber.
  • Inspect wiring: Open the junction box or cord connection and look for burnt insulation or loose wire nuts. Repair or replace damaged wiring.
  • Test briefly: After clearing jams and checking wiring, restore power and run the unit for only a few seconds. If the burning smell returns quickly, the motor windings are likely damaged.
  • Replace motor unit: Replace the entire Franke disposer motor unit if electrical burning odors persist.
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Repair Difficulty

Hard 4/5

Required Part

Franke disposer motor unit
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