Air fryer heats but takes much longer than normal to cook; maximum temperature seems low.

Safety first: Unplug and cool the unit before internal inspection.

• Compare cook times: Verify that the issue is consistent across different recipes and not due to overloading the basket.
• Inspect heater terminals: Access the heating element and check for loose or discolored terminals. Tighten or replace overheated connectors.
• Measure supply voltage: If possible, check the outlet voltage under load. Low household voltage can reduce heating performance.
• Test element resistance: Compare measured resistance to the specification for your model. A significantly higher resistance than spec can indicate a weakened element.
• Check sensor placement: Ensure the cabinet temperature sensor is firmly attached to the metal wall and not insulated by grease buildup, which can cause early shutoff.

If performance remains poor after these checks, replacing the heating element assembly is often the most effective solution.