The short answer
Fluff dominates the AEG dryer fault list. A heat-pump machine passes all its air over a fine exchanger matrix behind two filters, and when that matrix mats the drying time climbs, then the machine halts on thermal protection. Condensate handling is second. Genuine component failures are a small minority of what gets reported.
The problems that actually happen, by what you observe
- Cycles take far longer than they used to — The first and most reliable sign of a matted heat exchanger. It degrades gradually, so owners adapt to it.
- Machine stops early with a fault indication — Thermal protection. Same cause as above, one stage further along.
- Water container fills very quickly, or not at all — Fills fast on wet loads, which is normal. Not at all means the condensate path is blocked.
- Water on the floor under the machine — A container not seated, a blocked sump or a drain hose fitted without a fall.
- Loads come out creased and still damp — Overloading as often as a fault. Heat-pump drying needs the load to tumble freely.
- Trips protection at the start of the cycle — The electrical class — compressor start on a marginal supply. It has its own page.
Problem classes in frequency order on this brand
- Fluff in the filters and the heat exchanger — First by a wide margin, and the reason this brand's fault list looks nothing like a vented dryer's. There is a second filter behind the door filter and, behind that, a fine matrix that must stay clear. Owners who clean only the door filter get a machine that slowly stops working.
- Condensate handling — Second. The water has to go to a container or through a drain hose, and a container that is not fully seated, a blocked sump or a hose run upwards all put water where it should not be.
- Loading and load type — Third. A heat-pump machine dries by moving air through the load, so an overloaded drum or a single heavy item produces damp results with nothing at all wrong with the appliance.
- Installation and ventilation — Fourth. The machine rejects heat into the room; sealed into a cupboard it warms its own supply air, and the cycle time climbs for reasons no filter clean will fix.
- Sensors, fans, compressor and board faults — Last. Moisture sensors do drift and fans do fail, but on this platform they account for a small share of complaints compared with the four causes above.
Which of these an owner can fix
Both filters, the exchanger face where the design allows access, the container, the drain hose and how the machine is loaded and installed are all owner work, and together they resolve most reported faults. Call a technician when cycle times stay long after a thorough clean, when the machine keeps halting thermally with clear filters, when water appears in the cabinet with a clear condensate path, or for anything involving the sealed refrigeration circuit — that last one is licensed work in every case.
The other AEG appliances
What this page does not cover
This page is generalized across AEG dryer families and assumes a heat-pump condenser machine; vented and older condenser lines fail in a different order. Filter arrangements, exchanger access, fault codes and sensor types differ by platform and belong on the family page where one exists — that page supersedes this one for your machine. The per-problem pages below are the level beneath this one.
The per-problem pages beneath this one
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
