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

Safety first: Unplug the unit and let it cool. Heating components can remain hot even if they are not working correctly.

Steps to diagnose no‑heat condition:

• Confirm symptom: Set the air fryer to a high temperature (e.g., 200°C) and run for 5 minutes. If the fan runs but the interior stays cool and the element does not glow, proceed.
• Access heater circuit: Remove the top or rear cover to expose the heating element, thermal fuse, and wiring.
• Check thermal fuse: Locate the inline thermal fuse (small cylindrical component wrapped in heat‑shrink) on one of the heater wires. Test for continuity. If open, replace with the same rating.
• Inspect heater connections: Ensure all spade terminals on the heater are tight and free of corrosion. Reseat any loose connectors.
• Relay function: With the unit reassembled but open enough to observe (only if you are qualified), start a heating cycle and listen for a click from the heater relay. No click may indicate a failed relay or control board.
• Replace faulty parts: Replace a burned heater, open thermal fuse, or defective control PCB as needed using Pro Breeze‑compatible parts.

Warning: Working on live mains circuits is dangerous. If you are not experienced, seek professional service.