LG air fryer shows H1 or a similar high-temperature warning and stops mid-cycle.

Safety first: Unplug the air fryer and allow it to cool completely before cleaning or inspection.

Steps to resolve H1 overheat:

• Clear ventilation: Ensure all external vents are unobstructed. Move the unit away from walls and remove any objects blocking side or rear vents.
• Remove obstructions inside: Do not cover the bottom or sides of the basket with solid foil. Use only perforated liners approved for air fryers.
• Deep clean: Clean the heater guard, fan grill, and interior surfaces with a degreaser safe for appliances. Built-up grease insulates heat and can trigger overheat protection.
• Check fan operation: During a test run (with the unit reassembled), listen for the fan. If it does not run or sounds weak, the fan motor may need replacement.

Warning: Repeated overheat events can damage internal components. If H1 recurs after cleaning and ensuring airflow, have the unit inspected by a professional.