Machine emits a burning smell during operation.

Safety: Immediately unplug the machine and do not continue using it until inspected.

• Visual inspection: After cooling, open the housing and look for burnt wiring, discolored connectors, or charred PCB areas.
• Check for residue: Inspect the boiler and steam wand for burnt coffee or milk residues and clean thoroughly.
• Test components: If a specific component (pump, grinder, heater) smells burnt, test its electrical resistance and replace if out of specification.
• Professional service: If you cannot identify the source, contact an authorized AEG service center, as continued use may be unsafe.