Washer-dryer combo emits a burning smell during wash or dry cycles

Safety first: Immediately stop the cycle, unplug the appliance, and do not use it until inspected. Fire risk is possible.

• Check drum movement: After cooling, rotate the drum by hand. If stiff, the motor or bearings may be overloaded, causing belt slip.
• Inspect belt and motor: Remove the rear panel and look for rubber dust or a glazed, cracked Roborock drive belt. Replace if damaged.
• Clean heater area: Access the dryer heater housing and remove lint or fabric pieces that may be touching the heater.
• Inspect wiring: Look for discolored or melted connectors, especially at the heater, motor, and control board. Any signs of burning require component replacement and possibly professional evaluation.