Air fryer trips the household circuit breaker or RCD when plugged in or when heating starts.

Safety first: Do not repeatedly reset a breaker that trips; this indicates a potentially dangerous fault. Unplug the air fryer immediately.

• Visual inspection: Check the power cord for cuts or crushed sections. Replace the cord if damaged.
• Drying: If the unit was recently cleaned or exposed to liquid, allow it to dry in a warm, dry room for 48 hours before retesting.
• Internal check (advanced): With the unit unplugged, remove the cover and inspect for burnt components, carbon tracking, or moisture around the heater and PCB.
• Insulation test: A technician can test the heater and wiring for leakage to earth. Replace any component that shows low insulation resistance.

Because this fault involves mains safety, most users should seek professional service or replace the appliance.