Ascaso coffee machine smells of burning plastic or electrical odor during operation.

Immediate action: Turn off and unplug the machine at the first sign of burning smell.

• Visual inspection: Remove the housing and look for discolored, melted, or charred connectors, especially at the boiler, pump, and control board.
• Tighten and replace: Tighten loose spade connectors and replace any burnt terminals or wires.
• Check for obstruction: Ensure ventilation openings are not blocked and that internal components are not covered by foreign objects.
• Replace damaged parts: Replace any component that shows signs of overheating, including the control board if necessary.