Air fryer repair is straightforward. Not heating? Check the heating element and thermal fuse. The fan must spin—if it does not, the motor may have failed. Basket coating can peel—replace the basket. Our guides cover Ninja, Philips, Cosori, and Instant Pot. Unplug and cool before opening. Ensure the basket is properly seated. Excess smoke means oil buildup—clean the interior. Heating elements and fans are replaceable. Air fryers are relatively simple—few moving parts. Order model-specific parts.