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Fix an air fryer that will not heat

We'll confirm the fan runs, rule out power and basket seating, then isolate the cause—heating element, thermal fuse, or thermostat—or tell you when to call a pro.

Troubleshooting · Home appliances
15–45 min
What you'll need
  • Multimeter (for continuity tests)
  • Screwdriver set (Phillips and flathead)
  • Replacement heating element, thermal fuse, or thermostat (if tests show a fault)
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Steps

Goal: Confirm the symptom, rule out power and basket seating, then isolate the heating fault.

  • Set the air fryer to 400°F and run it for three minutes with the basket empty. Check that the fan runs and the display counts down.
  • Good: The fan runs but you feel no heat above the basket—heating system has failed. Proceed to Check power and basket.
  • Bad: The fan does not run—different problem (power, control board). Check power first.

Check power and basket

Goal: Rule out power loss and basket seating before opening the housing.

  • Verify the air fryer is plugged in and the circuit breaker has not tripped. Reset the breaker if tripped.
  • Remove and reinsert the basket firmly until it clicks or seats fully. Many models have a safety switch that prevents heating when the basket is not properly engaged.
  • Unplug the air fryer before opening the housing. Never work on it while plugged in.
  • Good: Power is on and the basket is fully seated. Proceed to Heating element and thermal fuse.
  • Bad: Breaker keeps tripping or the basket will not engage—fix those first, or call a pro.

Heating element and thermal fuse

Goal: Test and replace the heating element, thermal fuse, or thermostat on an air fryer that runs but does not heat.

  • Unplug the air fryer. Open the housing per your model. Check your owner’s manual or search “[brand] [model] air fryer service manual” for disassembly steps if unsure. Locate the heating element (coil or heating plate above the basket).
  • Inspect the heating element for visible breaks, blisters, or burn marks. Test for continuity with a multimeter. No continuity or visible damage means it has failed—replace with an exact match.
  • If the heating element is good, locate the thermal fuse (small white or silver cylinder). Test for continuity. Replace if blown.
  • If both are good, test the thermostat per your model’s specs. Replace any that fail.
  • Inspect the wires connecting these components for burnt insulation or loose terminals. If you find damage, call a technician—do not attempt to repair burnt wiring yourself.
  • Good: You found and replaced the faulty part. Reassemble and test—the air fryer should heat.
  • Bad: All parts test good but the air fryer still does not heat—call a technician.

When to get help

Call an appliance technician if:

  • You have replaced the heating element and thermal fuse and the air fryer still does not heat.
  • You see burnt or melted wiring.
  • You are not comfortable working with electrical components.

Never work on the air fryer while it is plugged in.

Verification

  • The fan runs and you feel heat above the basket within two to three minutes of starting a cycle.
  • No error codes or unusual smells.
  • The heating element, thermal fuse, or thermostat (if replaced) tests good and the air fryer heats consistently.

Escalation ladder

Work from the device outward. Stop when the problem is fixed.

  1. Confirm symptom Verify the fan runs but no heat; rule out a different problem.
  2. Power and basket Check circuit breaker and that the basket is fully seated; both can prevent heat.
  3. Heating element Test and replace heating element if faulty.
  4. Thermal fuse and thermostat Test and replace thermal fuse or thermostat if faulty.
  5. Call a pro Parts replaced and still no heat, burnt wiring, or not comfortable—call an appliance technician.

What to capture if you need help

Before calling support or posting for help, have these ready. It speeds everything up.

  • Air fryer brand and model
  • Whether the fan runs and display works
  • Basket seating check
  • Heating element / thermal fuse / thermostat test results
  • Steps already tried

Does the fan run but food stays cold?

Set the air fryer to 400°F and run it for three minutes. If the fan runs but you feel no heat above the basket, the heating system has failed.

Set the air fryer to 400°F and run it for three minutes with the basket empty. Check that the fan runs and the display counts down. Hold your hand above the basket after three minutes. Good: fan runs but no heat—heating fault. Bad: fan does not run—different problem (power, control); check power first.

Yes No

You can change your answer later.

Is power on and the basket fully seated?

Circuit breaker and basket seating can prevent heating. Many models have a safety switch.

Verify the air fryer is plugged in and the circuit breaker has not tripped. Remove and reinsert the basket firmly until it clicks or seats fully. Good: power on and basket seated. Bad: breaker tripped or basket not engaging—fix those first.

Yes No

You can change your answer later.

Does the heating element have continuity?

The heating element is a coil or plate above the basket. Test with a multimeter.

Unplug the air fryer. Open the housing per your model. Locate the heating element. Inspect for breaks, blisters, or burns. Test for continuity with a multimeter. No continuity: element failed—replace with exact match, reassemble, test. Continuity: element good—proceed to thermal fuse.

Yes (good) No (broken)

You can change your answer later.

Replace heating element and test

Replace the heating element with an exact match. Reassemble and test. The air fryer should heat if the element was the only fault. If it still does not heat, proceed to check the thermal fuse and thermostat.

Done

Does the thermal fuse have continuity?

The thermal fuse is a small white or silver cylinder. Test with a multimeter.

Locate the thermal fuse. Test for continuity. No continuity: fuse blown—replace with exact match, reassemble, test. Continuity: fuse good—check thermostat. If all test good but the air fryer still does not heat, call a technician.

Yes (good) No (blown)

You can change your answer later.

Replace thermal fuse and test

Replace the thermal fuse with an exact match. Reassemble and test. The air fryer should heat if the fuse was the only fault. If it still does not heat, check the thermostat or call a technician.

Done

Does the thermostat test good?

A faulty thermostat can prevent the heating element from receiving power.

Test the thermostat per your model's specs. Replace if it fails. If all parts test good but the air fryer still does not heat, call a technician.

Done

Call a technician

Call an appliance technician if the fan does not run (different problem), if you have replaced the heating element and thermal fuse and the air fryer still does not heat, if you see burnt or melted wiring, or if you are not comfortable working with electrical components. Never work on the air fryer while it is plugged in.

Done

Reviewed by Blackbox Atlas

Frequently asked questions

Why would an air fryer run but not heat?
Common causes: a failed heating element, blown thermal fuse, or faulty thermostat. The heating element is a coil or plate above the basket; a break or burn stops heating. Check power and basket seating first, then the heating components.
Can I fix an air fryer that will not heat myself?
Yes, if you are comfortable with basic tools and electrical safety. Unplug the air fryer before opening it. You can test and replace the heating element, thermal fuse, or thermostat. Call a technician if you are not comfortable.
When should I call a technician for an air fryer that will not heat?
Call an appliance technician if you have replaced the heating element and thermal fuse and it still does not heat, if you see burnt or melted wiring, or if you are not comfortable working with electrical components.

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