AEG F240 fault codewhat it means and how to fix it
The touch controls are not registering properly. AEG class this as owner-fixable and their remedy is to clean the display, which is less dismissive than it sounds.
Take care
What F240 means
AEG document F240 and F439 together in one row, with one meaning and one remedy between them: the touch fields on the display do not work properly, and the fix is to clean the surface of the display and make sure there is no dirt on the touch fields. That is worth taking seriously rather than treating as a brush-off. Capacitive touch controls read a change in electrical capacitance through the glass, and a film of grease, a splash of cleaning product that has dried, or condensation running down the fascia will all register as something other than a finger.
A kitchen appliance sitting under a hob is about the worst possible environment for that. Two details make this code awkward to look up. AEG’s support website does not list F240 anywhere — its table jumps from F239 to F241 — so the only place either code is defined is the manual. And because the two codes share a row, there is nothing published that distinguishes F240 from F439.
What causes it
| Cause | What is actually happening | How likely |
|---|---|---|
| Grease or cleaning residue on the glass fascia | The cause AEG’s remedy implies. A dried film changes how the panel reads a fingertip, and it builds up invisibly on a surface above a hob. | Common |
| Condensation or steam on the touch surface | Water on the glass behaves electrically much like a finger, so a panel wet from a steamy kitchen can register presses nobody made. | Common |
| A failing touch control module behind the glass | What remains if cleaning does not help. The sensor array and its board are a single assembly on most AEG ovens and are replaced rather than repaired. | Occasional |
What to try yourself
Let the oven cool, then clean the whole fascia with a barely damp cloth and dry it thoroughly. AEG ask specifically that there is no dirt left on the touch fields themselves.
Do not spray cleaner directly at the panel. Liquid running into the seam between glass and frame is a good way to turn a cleaning job into a module replacement.Check for anything resting against the fascia — a tea towel over the handle, a trivet pushed back against the controls. Constant contact can hold a touch field active.
Power the oven down at the cooker switch for thirty seconds and back on, so the panel recalibrates against a clean, dry surface.
If the code returns with the glass clean and dry, stop cleaning it. AEG’s escalation for a message that keeps appearing is a service call, and repeated scrubbing will not fix a failed sensor.
Get a qualified appliance engineer to look at your AEG F240
We do not pass enquiries to a repair firm, so there is no form here. When you book a qualified appliance engineer, tell them the make, the model and the exact code or message on the display, and ask whether they carry parts for this make — that is what turns one visit into a repair rather than a quote.
What it costs to fix
Typical repair cost
£0–£250
Time on site
10 minutes
Nothing if it cleans off. A touch control module on an AEG oven is typically £90 to £180 for the part, plus fitting, because the sensor array and the board come as one assembly.
Typical UK prices including parts and labour, updated September 2026. Your quote may differ.
Own this appliance and had this code? . Nothing is published until a person has read it.
Related AEG fault codes
- DemoUsually simple to fixThe oven lights up, accepts settings and never heats. AEG admit demo mode can switch itself on after a power cut, and the code to switch it off is 2 4 6 8.Related: controls and clock
- SAFEUsually simple to fixSAFE or a padlock symbol means one of three things on an AEG oven, and only one of them needs you to do anything. Work out which before you start pressing buttons.Related: controls and clock
- F113Get it checkedAEG name F113 as an example of a code you might see, then publish no meaning for it. It is one of roughly 74 oven F codes they list and do not define.Related: controls and clock
- F908Get it checkedThe oven cannot talk to its own control panel. AEG define this one in the manual and leave it out of the code list on their website, where it appears only as an example.Related: controls and clock
- LocUsually simple to fixThe function lock. It stops the temperature and timer being changed mid-cook, and unlike the child lock it can only be set while the oven is actually running.Related: controls and clock
- F601Usually simple to fixOne of four Wi-Fi codes on connected AEG ovens. None of them affects cooking, and AEG give all four an owner remedy rather than sending you to an engineer.Related: controls and clock
Own an AEG oven? Save it and its codes come first next time.
Related guides
Common questions about AEG F240
What is the difference between F240 and F439?
AEG do not distinguish them. Both codes sit in a single row of the manual’s table sharing one description and one remedy, so on the published evidence there is nothing to tell you which you have or why it matters. Anything a third-party site claims about the difference is not coming from AEG.
Why can I not find F240 in AEG’s online list of codes?
Because it is not there. Their web table runs F239, then F241, with no F240 between them. The code is defined only in the manual, which is a pattern across almost the whole owner-fixable set — eight of the ten codes AEG say you can handle yourself appear nowhere on their website, and the other two, C2 and C3, are on a separate article rather than in the F table.
The touch panel is completely dead rather than unreliable. Same thing?
Probably not, and there is a cheaper thing to rule out first. A panel that appears dead may be locked rather than broken: check for SAFE, a padlock symbol or Loc on the display before assuming the hardware has failed.
Technical review
Not reviewed by an engineer
No engineer has read this page. Severity follows what the manufacturer publishes, and we would rather tell you that than let a byline imply a sign-off.
Sources and how we verified this
We establish the facts from the sources below and then write the explanation ourselves. We do not copy manufacturer wording and we do not host their manuals.
- Manufacturer technical and service documentation
This page has not been reviewed by an engineer, and we would rather tell you that than imply otherwise. The severity rating follows what the manufacturer publishes: where they say isolate the appliance and call someone, so do we.