Creeping drying times are the most common Asko dryer complaint and the least likely to have a single broken part behind them. The machine is doing what it always did; the conditions it is doing it in have changed. Work through them in order of how much difference they make.
Airflow Through the Machine
On a condenser or heat-pump dryer the air goes round in a loop, and every restriction in that loop costs time. The door filter is the obvious one, and a film of fabric-softener residue on the mesh restricts it long before it looks dirty; run water through it and see whether it passes. The heat exchanger behind the lower access panel is the one that gets forgotten, and it is where the fibres that got past the filter accumulate. Asko has a message for each of them, Clean door filter and Clean the condenser unit, and on the older machines it scheduled the condenser prompt every hundred cycles.
The Room the Machine Is Standing In
This one surprises people, and Asko put it in writing. The published action for the older TD60 code F2, maximum permitted programme time reached, includes emptying the condensate container and checking that neither the fluff filter nor the condenser are clogged, and then says something about the room: overly long drying times may also be due to the dryer being located in a confined area or a room that is too small, causing the air to become too hot, and it advises giving the dryer access to more cold air, for example by opening doors or windows.
That is the physics of a condenser machine stated plainly. It rejects heat into the room, and it needs cool air to condense against. A dryer in a small closed closet, or in a hot utility room in August, will take measurably longer than the same machine in a ventilated space in winter. Check the machine is not pushed hard against a wall, that any floor and rear vents are clear, and that the closet door is not shut for the whole cycle.
What the Washer Handed Over
A dryer inherits whatever water the spin left behind. A washer that is dropping out of its fast spin because of an unbalanced load, or that is being run on a lower spin speed than usual, delivers a much wetter load and the dryer pays for it in minutes. If drying times went up around the same time the washer started behaving oddly, that is one problem, not two.
Load and Program
- An overfilled drum cannot tumble, and fabric that does not move does not give up its moisture.
- Mixed fabrics behave badly on automatic programs. One heavy towel among shirts leaves the machine running for the towel.
- Check nothing has been left selected: a low-temperature or delicate program, an anti-crease phase at the end, or a higher dryness setting than you need.
- Automatic programs judge dryness by sensing, so a residue film on the sensing surfaces inside the drum can make a cycle behave oddly. Clean the drum interior as your manual describes.
When It Is Actually a Fault
The published messages tell you when the machine itself has given up: the older platforms show Max Program Time, described as the cycle exceeding a set limit after which the cycle is interrupted and the program cleared, and the TD60 panel shows F2 for the same thing. On the Logic generation, E1 is a temperature sensor failure and E3 is a failure of the condensate pump, and both are listed as service items. A machine that tumbles with no heat at all, or that trips a breaker, is a different conversation from one that is simply slow.
Time one representative load before and after cleaning both filters and opening the room up, and bring the two numbers to an Asko dryer repair booking. A machine that improves by an hour after a condenser clean has told you what it needed; one that does not has narrowed the diagnosis considerably.