LG air fryer overheats and burns food even at low temperature settings.

Safety first: Unplug the unit immediately if you suspect runaway heating. Allow it to cool fully.

Steps to address overheating:

• Check sensor placement: Access the cavity temperature sensor and ensure it is firmly attached to the cavity wall or in its designated holder. A sensor hanging in free air can misread temperature.
• Test sensor resistance: At room temperature, measure the sensor’s resistance. Compare to LG specifications if available. A near-zero reading suggests a shorted sensor.
• Inspect control board: Look for a heater relay stuck closed (contacts welded). This may show as heater power even when the unit is off or in standby.
• Replace faulty components: Replace a shorted sensor or a main control board with a stuck relay. Do not attempt to repair the relay alone unless qualified.

Warning: Runaway heating is a fire risk. Do not continue using the air fryer until the fault is corrected.