Display shows E5 and the unit shuts off or will not heat.

Safety: Unplug the air fryer and allow it to cool. The heating element and surrounding metal can remain hot for some time.

Steps to diagnose E5:

• Visual inspection: Remove the basket and pan. Look up toward the heating element. Check for visible breaks in the coil, heavy pitting, or burn marks.
• Access heater terminals: Turn the unit upside down and remove the bottom cover. Locate the two heavy-gauge wires going to the heating element terminals.
• Check connections: Ensure the spade connectors are tight on the element terminals. Remove and re-seat them to clean oxidation. Look for signs of arcing or melting; replace any burnt connectors.
• Test the element: With the fryer unplugged, disconnect at least one heater lead and measure resistance across the element terminals. A typical element will show a low but finite resistance (often 10–40 ohms). An infinite reading indicates an open element that must be replaced.
• Relay/board check: If the element tests good, the heater relay on the main control board may not be closing. Inspect the board for burnt spots or a stuck relay. Replacement of the main control board is usually required if the relay has failed.
• Reassemble and test: After repairing or replacing parts, reassemble the base, plug in the unit, and test at a moderate temperature while monitoring for normal heating.

Note: Do not attempt to repair a cracked or broken heating element; always replace the entire element assembly.