Shark Overheating Motor or Belt Friction

Robot vacuum smells like burning or hot plastic during use

Advertisements

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.

Advertisements

Possible Causes

Main brush jammed causing belt slip, Hair packed in brush bearings, Suction motor overheating due to clogs, Electrical short in motor windings

How to Fix / Troubleshooting

Immediate safety: Turn the robot OFF, remove from dock, and stop using it until inspected. Unplug the dock if you suspect electrical issues.

  • Inspect main brush: Remove the brush and clean thoroughly. Check for melted plastic or discoloration around the ends.
  • Check for clogs: Inspect the suction inlet, dust bin, and filters for heavy clogs and clear them.
  • Smell test: With the brush removed, briefly power on the robot. If the burning smell comes from inside the body, stop immediately.

Persistent burning smell indicates a failing motor or electrical fault. Do not continue using; have the suction motor assembly and wiring inspected and replaced as needed.

Advertisements

Repair Difficulty

Hard 4/5

Required Part

Main Brush Roller Assembly
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements