The display shows H2, and the unit does not heat; the fan may still operate.

Safety first: Unplug the air fryer and allow it to cool completely.

Inspection and cleaning:

• Clean heater area: Remove the basket and drawer. Using a soft brush, gently remove carbonized food and grease from the heater guard and surrounding metal surfaces. Avoid bending the heater coil.
• Check for obstructions: Ensure no foil, parchment paper, or accessories are touching the heater during use.
• Inspect fan operation: Confirm that the convection fan runs strongly when the unit is started (if it runs). Weak airflow can cause localized overheating.

Component checks (for experienced users):

• Access the heater assembly and inspect any thermal cutouts or thermostats mounted directly on the heater bracket.
• Test these components for continuity; replace any that are open when at room temperature.

If H2 persists after cleaning and verifying airflow and thermal cutouts, the main control board may be driving the heater incorrectly and should be evaluated or replaced.