Clicking or arcing sounds and visible sparking near the heating element.

Safety first: Immediately turn off and unplug the air fryer if you see sparks. Allow it to cool before inspection. Risk of fire and electric shock is present.

Step-by-step checks:

• Inspect heater surface: After cooling, examine the heating element for heavy carbonized grease or food deposits. Clean gently with a non-abrasive pad and mild degreaser.
• Check insulators: Access the rear or top of the heater to inspect any ceramic or mica insulators. Replace the heater assembly if insulators are cracked or missing.
• Tighten terminals: Ensure heater terminal screws or spade connectors are tight and fully seated. Loose connections can arc under load.
• Look for exposed wires: Inspect wiring near the heater for melted insulation or bare conductors touching metal. Replace damaged wiring with high-temperature rated wire.
• Test carefully: After cleaning and tightening, run a short test while observing the heater through the basket opening. If arcing persists, discontinue use.

When to stop: If you cannot eliminate the arcing or see any damaged insulation or components, replace the heating element assembly and any affected wiring, or contact a technician.