Most air fryer problems are simple to fix and rarely mean a fault. Here are the common ones and what to check first.
Key takeaways
Q: Why won't my air fryer turn on?
A: Usually the basket isn't pushed in fully — most models have a safety switch that won't start until it's seated. Check the plug and socket too.
Q: Why isn't my air fryer heating?
A: Check the temperature and timer are set, the basket is in, and nothing is blocking the fan or element.
Quick fixes
| Problem | First thing to check |
|---|---|
| Won't turn on | Basket fully seated; plug/socket |
| Not heating | Timer and temperature set; fan clear |
| Smoking | Grease build-up; fatty food |
| Food not crisping | Overcrowding; too much moisture |
| Won't stop beeping | Basket not seated; reset at the socket |
New plastic smell
A new air fryer often smells of plastic on the first few uses — this is normal manufacturing residue burning off. Run it empty at a high temperature for 10 minutes, then wipe it down, and the smell should clear. A persistent burning-plastic smell on an older unit, though, means you should stop and unplug it.
Food not crisping
The most common complaint, and almost always down to overcrowding or moisture. Cook in a single layer, dry food before cooking, and shake the basket. For the full list of habits to avoid, see air fryer mistakes to avoid, and for smoke specifically, why your air fryer smokes.
Frequently asked questions
Why won't my air fryer turn on?
Most likely the basket isn't pushed all the way in — there's a safety switch. Also check the plug, the socket and that the timer is set.
Why does my new air fryer smell of plastic?
It's usually harmless manufacturing residue. Run it empty at high heat for 10 minutes and wipe it down. A burning smell on an older unit means stop and unplug it.
Why isn't my air fryer making food crispy?
Almost always overcrowding or moisture. Cook in a single layer, pat food dry, and shake the basket partway through.