What ERROR_4 means on your Asko dryer (asko dryer error_4)
An asko dryer error_4 problem is, like ERROR_0, described in Asko’s manual as a control unit failure — but with a meaningful difference: the manual’s stated instruction here is “please clean filters or contact Service,” giving owners one genuine self-help step before escalating. That distinction matters on a heat-pump platform, where badly clogged filters can restrict airflow enough to confuse the control logic and trigger a problem reading that clears once the filters are properly cleaned. If cleaning the filters does not resolve ERROR_4, the underlying issue is the same as ERROR_0 — a genuine control unit problem needing service.
Symptoms
Use these symptoms to confirm your Asko dryer really has this particular problem rather than a different one that behaves the same way. A dryer can display a single sign or a whole cluster, and they often turn up right after a power event, a demanding cycle, water getting somewhere it should not, or recent service.
- The display shows ERROR_4 or E-4
- The lint filter or condenser filter may look visibly clogged when checked
- The cycle stops or will not start with ERROR_4 showing
- Drying performance may have been declining in the cycles before ERROR_4 appeared
Common causes
The symptoms on your Asko dryer can trace back to more than one root cause, which is why the list runs from most probable to least. Taking them in turn helps you see whether your dryer needs nothing more than a simple check or a proper repair with genuine Asko parts.
- Clogged lint filter — restricted airflow through the standard filter is enough to trigger this alert
- Clogged condenser or heat-pump filter — a heavily loaded filter specific to the heat-pump system restricts the airflow it depends on
- Genuine control unit problem — if filters are already clean, the underlying issue is the same board-level problem as ERROR_0
Troubleshooting steps you can try
Run down this list on your Asko dryer in order before arranging a visit, keeping the easy checks first. Any step on the dryer that involves live voltage, gas, a hot cavity, standing water, or a sealed system is one to leave to an experienced technician.
- Remove and thoroughly clean the standard lint filter.
- Locate and clean the condenser or heat-pump filter per the T411VD owner manual — this model has more than one filter to check.
- Restart the cycle and confirm ERROR_4 clears once both filters are clean.
- If ERROR_4 returns with both filters confirmed clean, contact service rather than continuing to reset the unit.
Parts a technician may replace
Where the problem on your Asko dryer traces to hardware, a technician inspects, tests, or replaces the lint filters, condenser filter, and control board first. Each is matched to your dryer by model, serial, and Art. No., and genuine OEM or trusted-supplier components are used so the dryer performs as it should.
When to call a technician
If cleaning both filters does not clear ERROR_4, an experienced technician needs to test the T411VD control board — the problem is then equivalent to ERROR_0. There is no emergency here given the Medium severity, but if your Asko dryer keeps throwing ERROR_4 after the checks above, let a technician diagnose the dryer before any part is fitted. Work on your Asko dryer is independent of Asko, Gorenje, and Hisense; experienced technicians fit genuine OEM or trusted-supplier parts, and the labor on the dryer is covered by a 30-day warranty. Note down your Asko dryer’s model, serial, and Art. No. before you call; with those, the part for your dryer is matched ahead of time and ERROR_4 is dealt with in as few visits as we can manage.
Related help and Asko resources
When ERROR_4 won’t clear on your Asko dryer, the next move is to book Asko dryer repair, dip into our other dryer error-code guides, consult our step-by-step repair guides, schedule service at a time that suits you, or check coverage on our locations page. For a closely related problem on your Asko dryer, see ERROR_0 control unit failure. The manufacturer’s specifications and model lookup for your Asko dryer sit at us.asko.com.
