Tumble dryers fault codes by brand

How tumble dryers fault codes work

Start with the type rather than the badge. Tumble dryers come in three kinds, and they are genuinely different machines in similar boxes. A vented dryer heats air, pushes it through the load and blows it out of a hose to the outside. A condenser dryer does the same but cools the wet air back into water and collects it in a container you empty by hand. A heat pump dryer is a condenser dryer that recycles its own heat rather than making it fresh each time, which is why it uses roughly half the electricity and takes considerably longer. A code about a water container or a condenser cannot appear on a vented machine, because it has neither of those things. Working out which you have rules out a large part of this category before you read a word.

Then the badge, which as everywhere else on this site is often not the manufacturer. Bosch, Siemens and Neff are one company. AEG, Zanussi and Electrolux are another. Hotpoint, Indesit and Whirlpool are a third, Candy and Hoover a fourth. Where we have confirmed from each brand's own documents that the code lists genuinely match, the brand page says so. Where the service portals claim they match and the manuals shipped with the machines disagree — which we found on dishwashers, and which is not rare — the brand page says that instead.

Nearly every dryer fault is a story about air not moving. The machine is pushing heated air through a drum of wet washing and out the far side, with thermostats watching the temperature at both ends. Restrict that airflow anywhere along the path — the lint filter, the condenser, the hose, a vent crushed against the wall behind the machine — and the air on the heater side gets hotter than it should while the load stays wet. What you see is a dryer that will not dry. What the machine sees is an overheat, and it cuts the heater to protect itself. The most common complaint about dryers and the most common fault code on dryers have the same cause, which is why cleaning the filter is not the patronising advice it sounds like.

It is also why fire is the defining hazard here rather than a footnote. On every other appliance on this site the danger is water meeting electricity. On a dryer the fuel is lint — fine, dry and very ready to burn — the ignition source is a heating element a few inches away, and restricted airflow is the thing that brings them together. That shapes how we rate codes in this category. A fault that would be an inconvenience on a dishwasher, a blocked filter or a temperature sensor reading wrong, is rated more seriously here because of what it sits next to.

One hazard deserves stating plainly because it is genuinely counterintuitive. Fabric carrying cooking oil, machine oil or cosmetic oil should not go in a tumble dryer even after washing, because washing reduces the oil rather than removing it. Oil-contaminated cloth left warm in a heap generates its own heat as the oil oxidises, and can reach its ignition point with no external flame involved at all. This is the reason manuals insist you never cut a cycle short before the cool-down phase has run, and never leave a dried load sitting in a warm drum. Tea towels, chef's whites and heavily conditioned gym kit are the usual offenders.

There is a related mechanism worth knowing before you read any code page, because it applies the moment a dryer stops. Beko describe it better than anyone else in the industry and they give it a name: super heating. Their wording is that if a cycle is interrupted, "heat can continue to build in the drum and lead the clothes to ignite. This can occur several hours after the dryer has been stopped." They list a fault stopping the machine as one of the ways it happens — which is to say, the exact situation you are in if you are reading this site. Their instruction is to remove and separate the clothes immediately. That is why every page here starts by telling you to take the washing out and spread it before you touch anything else. It takes ten seconds, it is the one thing that is useful regardless of what the code turns out to mean, and almost no manufacturer puts it next to their reset instructions.

If your dryer is a built-in heat pump model, check the rating plate before you go any further. There is a live UK safety programme covering around 85,000 machines under eight badges — Candy, Hoover, Baumatic, Caple, Haier, Iberna, Lamona and Montpellier — where the regulator's finding is that an internal short circuit can cause the dryer to ignite in normal use. A machine that has had the current modification carries a J7 marking on the rating plate. One marked HM1, or carrying no marking at all, has not, and should not be used until it has. The catch, and the reason we repeat this rather than linking to the manufacturers, is that the regulator also warns that machines modified before 1 August 2025 are still at risk — and none of the manufacturer safety pages we checked mention that update, or the rating plate markings that let you check for yourself.

Finally, the commonest thing people arrive here with is not a fault. A heat pump dryer runs a cooler and much longer cycle by design — three hours where a vented machine might take ninety minutes — and a household that has just replaced a vented dryer with a heat pump one almost always concludes the new machine is broken. It is not. But a heat pump machine that has got slower over months usually does have something wrong, and it is normally a clogged evaporator behind the second filter: the maintenance job hardly anyone knows about, because it lives behind a panel that does not look as though it is meant to open.