What Recirculation Not Clearing Odours means on your Asko range hood (asko recirculating hood odours)
This is a maintenance symptom, not a code — hoods installed without an outside vent run in recirculation mode, pulling air through a grease filter and then a charcoal or carbon filter that absorbs odour before returning the air to the kitchen, and unlike grease filters, that carbon filter cannot be washed and reused; it saturates permanently and needs periodic replacement. A recirculating hood that used to control odours well and now does not is, more often than any other cause, simply a spent carbon filter overdue for replacement.
Symptoms
What your Asko range hood is doing should match the list below if this is genuinely the problem rather than one that only resembles it. The range hood may present one symptom or many, sometimes over several cycles and sometimes right after a power cut, a heavy load, or a recent installation.
- Cooking odours linger noticeably longer than they used to with the fan running
- The fan sounds and runs normally with no change in airflow feel
- A stale smell is noticeable from the hood itself even between cooking sessions
- It has been many months, or longer, since the charcoal filter was last replaced
Common causes
Any one of the causes below can be behind what your Asko range hood is doing, which is why they are ranked by likelihood. Checking them in that order helps you judge whether your range hood needs a homeowner check or an experienced technician with genuine Asko components.
- Saturated charcoal or carbon filter — the odour-absorbing filter has reached the end of its service life and can no longer bind odour molecules
- Grease filter clogged ahead of the carbon filter — restricted airflow reduces how much air passes through the carbon filter at all
- Recirculation kit not sealed properly — gaps in the recirculation ductwork let some air bypass the filter path
Troubleshooting steps you can try
Try these checks on your Asko range hood in the order given before you call for service, since the early ones often settle the matter. Stop the moment you are unsure, or where mains voltage, gas, a hot cavity, water, or a sealed component is involved on the range hood, and leave the rest to a qualified technician.
- Check how long ago the charcoal or carbon filter was last replaced, since it typically needs replacing on a schedule the manual specifies.
- Clean or replace the grease filter first, since a clogged grease filter starves the carbon filter of airflow.
- Order a genuine replacement carbon filter sized for the specific hood model rather than a generic substitute.
- Confirm the recirculation kit ductwork is fully seated with no visible gaps after filter replacement.
Parts a technician may replace
The parts list for this problem on your Asko range hood typically includes the charcoal or carbon filter, grease filters, and recirculation ductwork, any of which a technician might inspect, test, or replace. Genuine OEM or trusted-supplier parts are fitted to your range hood, identified from its model, serial, and Art. No., so the range hood keeps working reliably.
When to call a technician
If odour control does not improve after both filters are replaced, an experienced technician should check the recirculation kit for a bypass or seal issue on the Asko range hood. There is no rush with a Low-severity problem on your Asko range hood, but should Recirculation Not Clearing Odours keep recurring on the range hood once the checks are done, a technician should confirm what is behind it before any component is swapped. Because we operate independently of the manufacturer, your Asko range hood is in the hands of experienced technicians using genuine OEM or trusted-supplier parts, and the labor on the range hood carries a 30-day warranty. Booking is quicker if you can read your Asko range hood’s model, serial, and Art. No. off the rating plate first — that lets us match the right part for the range hood up front and clear Recirculation Not Clearing Odours without repeat visits.
Related help and Asko resources
When Recirculation Not Clearing Odours won’t clear on your Asko range hood, the next move is to book Asko range hood repair, dip into our other range hood 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. To confirm the specifications for your Asko range hood, the manufacturer’s site is global.asko.com.
