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

Safety first: Unplug the air fryer and allow it to cool completely before opening any panels.

Steps to diagnose no‑heat condition:

• 1. Confirm symptoms: Start a cycle and check if the fan runs and the timer counts down. Carefully feel (without touching) near the top vents for warmth. If there is no heat at all, proceed.
• 2. Visual check of heater: Remove the basket and look at the heating element at the top of the cavity. Look for visible breaks, heavy pitting, or burn spots.
• 3. Access heater wiring: Remove the rear or top cover to expose the heater terminals and wiring. Inspect for loose connectors, burnt insulation, or discolored terminals.
• 4. Test continuity (advanced): With the unit unplugged, disconnect one heater lead and measure resistance across the element. An open reading (OL) indicates a failed element. Also test the thermal fuse in series with the heater; it should read closed (near 0 Ω).
• 5. Check the control board relay: Start a cycle (briefly, with covers in place) and listen for a click from the heater relay. If there is no click and the element and fuse are good, the relay or control board is likely faulty.
• 6. Replace faulty components: Replace the heating element assembly if open. Replace the thermal fuse if blown, ensuring you use the correct temperature rating. If the relay is defective, replace the main control board.

Note: If you are not comfortable using a multimeter or working near mains wiring, contact a professional technician.