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Air fryers are reliable — but when something goes wrong, it’s usually one of a handful of known problems. This section covers every common air fryer issue, from a unit that won’t turn on to one that smokes, overheats, shuts off unexpectedly, or stops heating altogether. Each guide is written by Ruma Aktar, who has tested and repaired dozens of air fryer models since 2023. Every fix is practical and tested — no guesswork, no filler. Start with the symptom you’re seeing and follow the step-by-step diagnosis. Most problems can be solved in under 10 minutes without any tools. If a fix doesn’t work, each guide also tells you when it’s time to replace the unit and what to look for in a new one. Whether you own a Ninja, Cosori, Instant Vortex, or any other brand, these troubleshooting guides apply across models.
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