Asko documents three related but distinct drainage conditions on its laundry machines, and they call for different responses. Getting them the right way round saves both a wasted afternoon and, occasionally, a wet floor.
E7: Draining Error
On Logic-generation machines E7 is DRAINING ERROR, a water draining error, and the machine stops. Asko's published checks are four: is the pump filter clean, is the drain hose clogged, is the drain clogged, and is the drain hose fitted at the right height, with a reference to the drain hose installation chapter. The instruction after that is to press Exit again and to call a technician if it returns.
E7.1: Drain System Alert
E7.1 is a different animal. Asko calls it DRAIN SYSTEM ALERT and describes it as an alert about reduced water flow in the pumping stage. The check list is identical to E7, but this one is a warning rather than a hard stop. It is the machine telling you that drainage is degrading before it fails, which is a genuinely useful thing to act on while the laundry room is still dry.
F10 and F11 on the Older Machines
The earlier W6000 generation uses numbers. F11 is Drainage error, and Asko's owner checks are that no objects are stuck in the drainage hose outlet, that the drainage pump is not blocked by foreign objects and needs cleaning per the care and cleaning chapter, and that there are no kinks in the drainage hose. It then says to run the Drain program or press the door opening button to empty the machine before retrying. F10 is Overfilling, and its published action has two steps in a specific order: shut off the water tap, then see Drainage error. The overfill is a consequence of the machine being unable to get rid of water, so the drain is where the investigation goes.
Doing the Checks Safely
Before opening a pump filter door, switch the machine off at the wall or at its breaker, and if the program ran hot let the water in the drum cool. The drum may still hold several litres, and it comes out of the filter housing quickly. Put a shallow tray and a stack of towels down before the cap moves at all, and be ready to close it again. Access to a pump filter is documented as an owner task on the generations that have a filter door at the base of the front panel; that is not universal across every Asko laundry model, so check your own care and cleaning chapter before assuming yours has one.
Also look at the things outside the machine, which are where these faults often actually live: a drain hose kinked where the machine was pushed back, a hose pushed too far into a standpipe, a standpipe or trap silted up, and the drain hose height. Too low and the machine siphons itself while it is trying to fill; too high and the pump cannot lift the water.
E11: Overflow
E11 is OVERFLOW. Asko describes two versions of it. If the water level exceeds a certain point and the error is reported, the program is interrupted and the water is pumped out; restart the program, and call service if it recurs. But if the error is reported and the machine continues to add water, the published instruction is unambiguous: close the water tap and call a service technician. Do that first and investigate afterwards.
If the filter, the hose and the standpipe are all clear and the fault returns, what is left is the pump itself, the level sensor or the control. Book an Asko washer repair and say which of the three conditions above you actually saw, because an alert, an error and an overflow lead to three different diagnoses.