Direct answer: If your Asko dishwasher is not drying, the most common causes are a no-heat or eco-style cycle, low rinse aid, plastic items holding water, or a venting problem that traps steam inside. Start with the cycle and loading checks before you assume a failed heater or fan.
Most likely: Most of the time, dishes are wet because the machine never got hot enough to dry well, or the steam had nowhere to go at the end of the cycle.
Separate the symptom first: are the dishes warm but still spotted and wet, or are they cool and fully soaked like the dishwasher never heated at all? That split tells you whether you’re chasing normal moisture behavior, weak drying performance, or a real heat failure. Reality check: plastic cups and tubs often stay damp even when the dishwasher is working normally. Common wrong move: cracking the door early in the cycle or stopping it before the final dry portion finishes.
Don’t start with: Don’t start by ordering a heater or control part just because dishes come out wet. A lot of "not drying" calls turn out to be settings, rinse aid, or a vent area packed with residue.
Ceramic and glass items feel warm, but cups, bowls, and the tops of mugs still hold beads of water.
Start here: Start with rinse aid level, loading pattern, and whether tall items are blocking the vent path or trapping water.
At the end of the cycle the dishes do not feel warm, and the inside tub feels more like a rinse-only cycle than a hot wash.
Start here: Start with cycle selection and then confirm whether the dishwasher is heating water at all.
Plates and glasses are mostly dry, but plastic lids, containers, and lightweight cups still have puddles.
Start here: This is often normal behavior. Check loading and rinse aid before looking for a failed part.
When you open the door after the cycle, the tub is still foggy and damp and the dishes look like they never shed the moisture.
Start here: Look for a blocked or stuck vent area first, then consider a failed dishwasher drying fan if your model uses one.
Energy-saving or quick cycles often use less heat and shorter dry time, so dishes come out wetter even though the dishwasher finished normally.
Quick check: Run a normal or heavy cycle with heated drying enabled if available, then compare how warm the dishes feel at the end.
Rinse aid helps water sheet off dishes instead of hanging in droplets, and crowded loads trap water in cups, bowls, and plastic containers.
Quick check: Make sure rinse aid is filled and reload so cups are angled down and tall items are not blocking airflow or the vent area.
If the water never gets hot enough, the final dry stage has very little to work with and dishes come out cool and wet.
Quick check: Open the door carefully near the end of the main wash or right after the cycle. If there is little heat and almost no steam, suspect a heating problem.
Some models rely on a vent or fan to move moist air out. If that path is stuck or dirty, steam stays in the tub and moisture settles back onto dishes.
Quick check: Look for heavy condensation inside the tub at the end of the cycle and inspect the vent area for residue, grease film, or a door that does not seem to open or move.
A lot of drying complaints start with a cycle that simply does less drying, or a cycle that was interrupted before the final dry portion finished.
Next move: If drying improves on a full heated cycle, the dishwasher is likely working and the issue was cycle choice or an interrupted dry stage. If dishes are still cool and wet, move on to heating checks. If they are warm but still dripping, move on to rinse aid, loading, and vent checks.
What to conclude: This tells you whether you have a true failure or just weak drying performance from settings and expectations.
Poor drying with warm dishes is usually about water hanging on surfaces, not a dead part. Rinse aid and loading make a bigger difference than most people expect.
Next move: If dishes come out noticeably drier, you were dealing with water retention, not a failed heating component. If ceramics and glass are still wet even though they come out warm, inspect the vent area next. If everything stays cool, skip ahead to the heating check.
What to conclude: Warm but wet points to drying performance, while cool and wet points to missing heat.
If the dishwasher heats but cannot release moist air well, the steam condenses back onto the dishes and the tub stays foggy and wet.
Next move: If the tub is less foggy and dishes dry better, the problem was restricted venting or trapped steam. If the dishwasher still heats but stays very steamy and wet, a dishwasher drying fan or vent mechanism may have failed and the repair is no longer a simple cleaning issue.
No real heat means no real drying. This is the key split between a simple performance issue and a true component failure.
Next move: If you confirm strong heat during wash, the heater is probably doing its job and the remaining suspects are venting, fan operation, or normal moisture on plastics. If there is little heat in the wash and dishes finish cool, the dishwasher likely has a failed heating component or a control issue that needs electrical diagnosis.
By this point you should know whether the fix is housekeeping, a likely vent or fan issue, or a true no-heat problem that needs deeper testing.
A good result: If the next few loads come out acceptably dry, you have the problem under control without unnecessary parts.
If not: If the same symptoms keep returning, move to a confirmed repair with the right model-specific part or bring in an appliance tech for electrical testing.
What to conclude: You are done with the easy wins. What is left is either a normal limitation, a vent/fan repair, or a heating diagnosis.
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That usually means the dishwasher washed normally but drying performance was weak. Start with rinse aid, loading, and cycle choice. If the dishes are warm, the machine is probably heating and you are likely dealing with water retention or trapped steam rather than a dead heater.
Yes. Plastic does not hold heat like glass or ceramic, so water tends to cling to it. If only plastics stay wet and the rest of the load is mostly dry, that is usually normal behavior, not a failure.
Yes. Rinse aid helps water slide off dishes instead of forming droplets. When it is empty, glasses spot more and cups, bowls, and containers stay wetter at the end of the cycle.
Check whether the dishes and tub feel clearly hot during the main wash and at the end of the cycle. If everything stays cool and wet, treat it as a no-heat problem first. If things are hot but still damp, look harder at venting, loading, and rinse aid.
Not based on wet dishes alone. Wet dishes can come from settings, rinse aid, loading, or a vent problem. Replace heating-related parts only after you have confirmed the dishwasher is not heating the wash water.
Some steam is normal, but a tub that stays heavily fogged and leaves most dishes wet points to moisture not leaving the machine well. Check for blocked vent areas first. If the dishwasher heats normally and still traps steam, a vent or drying fan problem becomes more likely.