Air fryer runs but does not heat; fan operates and timer counts down, but food remains cold.

Safety first: Unplug and allow the unit to cool before accessing internal components.

• Step 1 – Confirm symptom: Run a 5-minute cycle and check for warmth at the exhaust. If completely cold, proceed.
• Step 2 – Access heater assembly: Remove the top or rear cover to expose the heating element, thermal fuse, and high-limit thermostat.
• Step 3 – Test continuity: With a multimeter, test continuity through the heater, thermal fuse, and thermostat in series. Replace any component that tests open.
• Step 4 – Check control output: If all heater components test good, the main control board may not be sending power to the heater. Board replacement is typically required.

Warning: Always match replacement thermal fuses and thermostats to the original temperature and current ratings.