Display shows E5 and the unit shuts down or refuses to start; may be accompanied by a burning smell previously.

Safety first: Immediately unplug the air fryer. Do not attempt to restart until the fault is identified. Risk of electric shock and fire exists with short circuits.

Initial checks:

• Inspect power cord and plug: Look for cuts, burns, or melted areas. If damaged, the cord set must be replaced.
• Smell test: With the cover removed (unit unplugged), carefully smell near the main control board and heater area for burnt electronics. Do not touch components with bare hands if you are not experienced.
• Visual inspection of PCB: Remove the top or rear cover to access the main control board. Look for burnt components, cracked ICs, or carbonized tracks on the board.
• Check for moisture or grease: Grease vapor can condense on the PCB, especially if filters are clogged. Wipe away any visible grease with isopropyl alcohol and a lint-free cloth.

Advanced checks (for qualified persons only):

• Test the heating element for shorts to chassis using a multimeter on continuity mode between each heater terminal and the metal body. Any continuity indicates a dangerous fault and the heater must be replaced.
• Check the main power switching device (relay or triac) for shorts using a multimeter in diode or resistance mode.

Corrective actions:

• If the main board shows visible damage or a shorted component, replace the entire main control board.
• If the heater is shorted to ground, replace the heating element assembly.
• Do not continue using the air fryer until the short-circuit condition is fully resolved.