The air fryer runs but does not heat

What is happening

An appliance whose fan runs but which produces no heat has a small number of user-checkable causes and, beyond them, an internal fault. AirfryerHQ gives no repair advice for the second case and will not, because the appliance is a sealed mains device carrying a heating element.

Narrow it down

Each of these has an answer you already know, and each one rules something out.

1. Is the fan running and the display lit?

   • Yes
   • No — nothing at all — Check the socket and try another appliance in it before assuming the air fryer is at fault. If the socket is fine, this is a manufacturer question.

2. Does the drawer close with a definite click or resistance at the end?

   • Yes
   • No, it feels loose or does not go all the way in — Check the runners for food debris — it is usually a chip.

Why it happens

Commonest first. It is almost always the boring one, and a page that walks you through the exotic causes before the obvious one has given you a longer path to a fixed dinner.

1. Most common

   The drawer or door is not fully closed

   Every one of these appliances has an interlock that cuts the element when the chamber is open. A drawer that has been pushed in but not seated will run the fan and the display while the element stays off. Food debris on the runners is the usual reason it will not seat.

   What to do

   • Take the drawer right out, clear the runners, and push it fully home

2. Common

   A time and temperature were set but the cycle was never started

   Many models require a separate start press after the settings are entered, and the display looks identical either way.

   What to do

   • Check whether the cycle actually started

3. Occasional

   An internal fault — element, thermal cut-out, or control board

   Heating elements fail, and thermal cut-outs trip permanently after an overheat event. Both present exactly like this. Neither is a domestic repair.

   What to do

   • Stop using it and contact the manufacturer

4. Occasional

   The appliance is on a mode that does not use the main element

   Dehydrate, prove and keep-warm modes run at low power by design. On a multicooker, a pressure or slow-cook programme does not use the crisping element at all.

   More likely in: Multicooker with air fry, Combination microwave with air fry, Countertop oven with air fry

   What to do

   • Check which mode is selected

The fixes in full

Take the drawer right out, clear the runners, and push it fully home

Remove the drawer completely, look along the runners and the rear of the cavity for food debris, clear anything you find, and push it back until it seats. This is the commonest cause and the easiest fix.

You will know it worked when: The element glows within a minute of starting a cycle.

Check whether the cycle actually started

On most models the timer counts down only once started, and setting a time is not the same as starting. Look for a countdown rather than a static number.

You will know it worked when: The displayed time is decreasing.

Check which mode is selected

Dehydrate, prove and keep-warm run at low power by design and will feel like a fault if you were expecting to roast. On a multicooker, confirm you are on a crisping programme rather than a pressure or slow-cook one.

Stop using it and contact the manufacturer

If the drawer seats properly, the cycle is running, and the mode is right, the fault is internal. Stop using the appliance and contact the manufacturer with the model identifier from the rating plate. If it is within warranty this is straightforward; if it is not, replacement is almost always the sensible course for an appliance of this value.

Evidence and confidence