The appliance is behaving oddly
An error code or message on the display
Look it up for YOUR manufacturer and nobody else's. A code means whatever that company's firmware author decided it means.
Stop and read this first
An appliance that shows a fault code and stops has detected something wrong with itself. Unplug it at the wall. Do not repeatedly power-cycle it to clear a code, and do not keep cooking through one. If the code relates to overheating, do not use the appliance again until you have established why it overheated.
What is happening
There is no standard for air-fryer error codes, no registry, and no convention. AirfryerHQ holds the codes that manufacturers publish in their own manuals, and reading a meaning across from another brand is the one thing this page exists to stop.
Narrow it down
Each of these has an answer you already know, and each one rules something out.
Does AirfryerHQ hold error states for your manufacturer?
- Yes — they are listed on the brand and model pages
- No — Do not read across from another brand. Check your own manual and contact the manufacturer.
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.
Most common
The manufacturer publishes nothing about it
Twelve of the fifteen manuals read for this catalogue contain no fault documentation at all. An undocumented code is not a code with an unknown meaning — it is a manufacturer who has decided not to tell users anything.
What to do
- Contact the manufacturer
Common
An overheat protection device has operated
A distinct published state on at least one manufacturer's table. It is a protection device doing its job, and the appliance can usually be used again once the cause is removed and it has cooled.
What to do
- If it is an overheat state: unplug, cool completely, and find out why it got too hot
- Look the code up for your own manufacturer
Common
It is a prompt rather than an error
Several display messages that read like faults are not — one manufacturer's ADD FOOD means preheating has finished, and its Plug In means a probe is not connected. A reader who searches these as errors deserves to find out they are not.
What to do
- Look the code up for your own manufacturer
Common
A temperature-sensor circuit fault
The commonest published meaning among the manufacturers who publish anything: an open or short circuit in a temperature monitor. The appliance has detected that it cannot trust its own temperature reading and has stopped.
What to do
- Look the code up for your own manufacturer
- Contact the manufacturer
The fixes in full
- Look the code up for your own manufacturer
AirfryerHQ holds published error states on the brand and model pages for the manufacturers who document them. Your own manual is the governing source, and there is no cross-brand table anywhere in this product because such a table would be actively misleading.
- If it is an overheat state: unplug, cool completely, and find out why it got too hot
Check the ventilation clearance around and above the appliance, whether anything is obstructing the vents, and whether fat has built up in the pan or on the element. A protection device that operates repeatedly is telling you about a cause that has not been removed.
You will know it worked when: The appliance runs a normal cycle afterwards without the state returning.
- Contact the manufacturer
Where a manufacturer publishes a code they almost always direct the user to support and offer no user action. That is their published position and AirfryerHQ does not supplement it with guesses.
Evidence and confidence
- Applies to
- Specific to this type of appliance
- Why this rating
- Two manufacturers publish fault documentation and twelve do not. Both patterns are represented here, and the record's main job is to stop a reader applying one manufacturer's meaning to another's machine.
- Last reviewed
- 2026-08-13
What this does not cover
- Derived from manufacturer troubleshooting tables for the appliances AirfryerHQ holds manuals for. It is not fault-rate data and nobody has counted how often each cause actually occurs.
- AirfryerHQ holds error states for two manufacturers only. A code not held here says nothing about the appliance — see the error-state register for the exact wording of that limitation.
Sources (3)
Cosori Dual Blaze TwinFry 10L Air Fryer CAF-TF101S-AES — User Manual (PDF)
Arovast Corporation (Cosori) — Manufacturer manual (United Kingdom)
Relied on for: A ten-code table with per-zone sensor-circuit and overheat-protection meanings, and the instruction to contact customer support for all but the overheat states.
States this directly
Passage read and verified
Retrieved 2026-08-13 from argos-support.co.uk
Retrieved from Argos's manual library for Argos product 818/0764. The document covers several languages in one file; every figure recorded here comes from the English section.
Ninja Foodi MAX Health Grill & Air Fryer AG551UK — Instructions (PDF)
SharkNinja Europe Limited — Manufacturer manual (United Kingdom)
Relied on for: Five display states, of which "E" means the unit is not functioning properly and three are prompts rather than faults.
States this directly
Passage read and verified
Retrieved 2026-08-13 from argos-support.co.uk
Retrieved from Argos's manual library for Argos product 735/0124. The document identifies itself as revision AG551UKSeries_IB_MP_Mv1_200630_Mv1.
AirfryerHQ assessment of airflow, element proximity and material behaviour
AirfryerHQ — Calculated or inferred by AirfryerHQ (Not jurisdictional)
Relied on for: The mechanism behind the symptom: airflow, element proximity and thermal behaviour in a small chamber.
AirfryerHQ's interpretation of what it says
Citation checked — the document exists and is described correctly