Display shows E3 and the air fryer does not heat; fan may still run but food remains cold.

Safety first: Disconnect the appliance from mains power and allow it to cool fully before opening any covers.

Steps to diagnose and fix E3:

• Visual inspection: Remove the basket and drawer. Look up at the heating element through the top grill. If you see broken coils or heavy burn marks, the element is likely failed.
• Access heater assembly: Remove the outer housing screws (usually at the back and bottom). Carefully lift off the cover to expose the heater and fan assembly.
• Check connections: Inspect the spade connectors on the heating element and thermal fuse. Reseat any loose connectors and ensure they are tight.
• Test the heating element: With a multimeter set to ohms, measure across the heater terminals. A typical element will read between 10–40 Ω. If the reading is OL (open), the element is faulty and must be replaced.
• Check thermal fuse: Many Beko air fryers include a thermal cutoff fuse in series with the heater. Test it for continuity. If open, replace it with the same temperature and current rating.
• Inspect wiring: Look for burnt or brittle wires between the heater and PCB. Replace any damaged sections using high-temperature-rated wire.
• Reassemble and test: After replacing the heating element or thermal fuse, reassemble the housing, ensuring no wires are pinched. Plug in and test with a short cooking cycle.

Note: If the heater and fuse test good but E3 remains, the relay or triac on the main control PCB may be defective and the PCB will need replacement.