Filter not recognized — AEG AX91-604GY

The app cannot read or verify the filter identifier. This can be caused by the filter not being seated, a temporary connection problem between the purifier and the app, or an issue with a replacement filter's recognition.

• AEG Wellbeing app displays 'Filter not recognized'.
• Filter status does not update or shows an error in the app.
• Purifier may not start certain app-dependent functions until resolved.

• Filter not fully inserted or latched.
• Temporary communication/connectivity issue between purifier and app.
• Non-compatible or faulty replacement filter.
• App needs to be refreshed or device re-paired.

1. 1
   Power off and unplug the purifier before removing the filter.
2. 2
   Remove the filter and inspect the seating area for dust or debris; gently brush or wipe with a dry, soft cloth if needed.
3. 3
   Check the filter for visible damage; do not use a damaged filter.
4. 4
   Reinsert the filter firmly until it clicks into place, then power the unit on and check the app.
5. 5
   If you have another genuine AEG replacement filter available, try swapping to check whether the filter itself is the issue.

• Filter is fully seated and latched.
• Unit was power-cycled after reseating the filter.
• AEG Wellbeing app is running the latest version.
• Phone and purifier are on the same local network if required by the pairing method.

• Not powering the unit off before removing or reinstalling the filter.
• Assuming the app refreshes automatically—close and reopen it after changes.
• Forcing the filter into place rather than aligning it first.

• Do not use liquids to clean electrical contacts or sensor areas.
• Do not force or modify the filter to make it fit.
• Do not operate the purifier with a visibly damaged filter.

Always power off and unplug the purifier before removing or refitting filters. If you find any damaged electrical parts or connectors, stop and contact AEG support or a qualified service agent.

• The error persists after trying the quick fixes and deeper checks.
• You observe damaged connectors, exposed wiring, or any electrical faults.
• You have followed app pairing instructions and the device still will not register a recognised filter.

If needed, provide the purifier model (AX91-604GY), a description of steps tried, and photos of the filter and seating area when contacting support.

• Follow the published filter replacement instructions and ensure filters are genuine or specified compatible parts.
• Keep the purifier's filter compartment clean and dry.
• Keep the AEG Wellbeing app updated and periodically check device connectivity.