Air fryer runs but does not heat (fan runs, timer counts down, food remains cold).

Safety first: Unplug the air fryer and allow it to cool completely before accessing internal components.

• Check settings: Confirm that a temperature above ambient is selected and that the unit is not in a keep-warm or fan-only mode.
• Inspect heater wiring: Remove the cover to access the heating element. Ensure all connectors are tight and there are no burnt or melted wires.
• Test thermal fuse: Locate the thermal fuse or cut-out in series with the heater. Test for continuity. If open, replace with the exact same rating and investigate possible overheating causes.
• Measure element resistance: Use a multimeter to check the heating element. An open circuit indicates a failed element that must be replaced.
• Control board diagnosis: If the element and fuse are good but no voltage is supplied to the heater during operation, the heater relay or control PCB is likely faulty and should be replaced by a professional.