Air fryer troubleshooting: common problems and fixes

Last reviewed on 28 April 2026.

Most air-fryer problems trace back to a small set of causes: airflow, oil, temperature, or contact. This guide goes symptom-by-symptom, starting with what to check first and working down to when it's time to stop and call the manufacturer.

The air fryer won't turn on

Power problems are usually external rather than internal. Run through these in order:

1. Outlet check. Plug something else (a phone charger or a kettle) into the same outlet to confirm it has power. If not, the issue is the outlet or the breaker, not the air fryer.
2. Breaker check. Air fryers draw 1,200–2,200 W. If the same circuit is also running a kettle, microwave, or toaster, the breaker may have tripped. Reset the breaker and try the air fryer alone.
3. Cord seating. On many models the cord is detachable at the unit end. Unplug it from the wall, push it firmly back into the air fryer, then plug into the wall again.
4. Door / drawer interlock. Almost all air fryers refuse to start unless the basket or drawer is fully closed. Slide the basket out, push it back in until it clicks, and try again.
5. Thermal lock-out. If the unit was very recently used, an internal thermal cutout may keep it off until it cools. Wait 10–15 minutes and try again.

If none of these fix it, and the unit is in warranty, stop and contact the manufacturer rather than disassembling it.

Smoke coming out of the air fryer

White or grey smoke during cooking is almost always grease, not a malfunction. The grease has dripped onto the heating element or onto the bottom of the cooking chamber and is burning off.

1. Pause and check the drip tray. If you can see grease pooled at the bottom, that's the source.
2. Add a couple of tablespoons of water to the drip area. This stops dripping fat from reaching ignition temperature. Refresh it if it evaporates during a long cook.
3. Cook fattier foods at lower temperatures. Bacon, sausages, marbled steak, and fatty chicken thighs render aggressively at 200 °C / 400 °F. Drop to 175–185 °C / 350–365 °F and extend the time.
4. Clean the unit. Old grease residue from previous cooks is the most common smoke source on a unit that worked fine before. See the cleaning guide.

Black or chemical-smelling smoke is different — that suggests something has melted, plastic packaging is in the basket, or non-stick coating is being burned off. Stop, ventilate, and inspect.

Food isn't crisping

The most common complaint, and the one with the most causes:

• Overcrowding. Hot air can't reach surfaces it can't touch. Cook in a single layer and shake or flip halfway. Two smaller batches almost always beat one packed batch.
• Surface moisture. Water on the food's surface boils first; only after it's gone can browning start. Pat foods dry with paper towel before cooking. This is the single most under-rated trick.
• Not enough oil. A teaspoon or two of oil is the difference between dry and crisp on most foods. Fully oil-free works for naturally fatty foods only.
• Temperature too low. Browning needs 175 °C / 350 °F or higher for most foods. If your unit's display reads correctly but food is pale, try raising the set temperature by 10–20 °C.
• Preheat skipped. Some foods don't need preheating; others (anything battered or breaded) crisp better when the chamber is already hot.

For technique-level fixes that overlap with this list, see 10 air fryer mistakes to avoid.

Food cooks unevenly

Some pieces are done while others are still pale. Three usual suspects:

• Mixed sizes. Cut food into similar-sized pieces. A whole onion-quarter and an onion sliver next to each other will never finish at the same time.
• No mid-cycle move. The basket's hot spot is usually the back top corner. Shake or flip food halfway through; for an oven-style air fryer, swap rack positions.
• Air-flow blockage. Foil that covers too much of the basket, parchment without holes, or food laid against the chamber wall all interrupt circulation. Leave a gap.

Basket is sticking or scratched

Non-stick coatings degrade with metal contact, abrasive cleaners, and overheating. The damage is cumulative rather than from a single event.

• Stop using metal utensils. Switch to silicone or wood for serving and turning.
• Soak before scrubbing. Fill the basket with warm soapy water and leave it for 15–20 minutes. Stuck-on food usually lifts without effort after that.
• Avoid the dishwasher for old units. Even on "dishwasher-safe" coatings, repeated cycles wear them out faster than hand-washing. Sticky-basket complaints often start around the 12-month mark on heavy-use units.
• If the coating is peeling or flaking, replace the basket — it's not safe to keep using.

Display shows an error code

Error codes are model-specific, so the manufacturer's manual is the source of truth. Two patterns are common across brands:

• Codes triggered by an open basket / drawer. "E1", "E01", "Door", or similar usually means the interlock isn't seated. Slide the basket fully closed.
• Codes triggered by a thermal sensor. "E2", "tH", or similar often means the unit is overheating or has lost contact with its temperature probe. Switch off, let it cool, vacuum the rear vent if it looks dusty, and try again.

Persistent codes that don't clear after a power cycle are warranty events. Don't try to bypass them.

The fan sounds louder than it used to

A new rattle or louder hum points to one of two things: a foreign object loose in the chamber, or the fan blades being coated with grease.

1. Cool down completely and unplug the unit.
2. Look upward into the chamber. The fan housing is at the top. If you can see grease or food residue, follow the deep-clean steps in the cleaning guide.
3. Don't disassemble the fan on a unit still under warranty. If a deep clean doesn't solve it, contact the manufacturer.

Plastic or chemical smell on first uses

A faint, fading smell during the first two or three cooks is normal — manufacturing residues are burning off. To minimise it, run the empty unit at maximum temperature for ten minutes before its first food cook (the "burn-in"), with the kitchen window open. The smell should be gone after that.

A persistent chemical smell beyond the first few uses is not normal and is worth raising with the manufacturer.

When to stop troubleshooting

Three signs it's time to call support rather than continue:

• Repeated tripping of your home's circuit breaker, especially when other appliances on the same circuit are off.
• Visible damage to the cord, plug, or housing — cracks, melted points, exposed wiring.
• Persistent burning-plastic smell after a deep clean.

Air fryers contain heating elements drawing high current. Unlike a slow cooker, a unit that has clearly developed an electrical fault is not safe to keep using on the gamble that the next cook will be fine.

A short checklist for next time

When something goes wrong, before going down a deep rabbit hole, run through:

• Is the basket fully seated?
• Is the unit clean of old grease?
• Is the food in a single layer with surface moisture patted off?
• Is the temperature high enough for browning, low enough for the fat content?
• Has the unit had time to cool from the previous cook?

Most issues clear after one of those. For technique you can prevent before it happens, see safety tips and mistakes to avoid.