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Michelle MooreAug 21, 2025
Why does my Nilfisk-ALTO Vacuum Cleaner have reduced suction power and acoustic warning?
- KKevin TorresAug 21, 2025
The acoustic warning sounds and suction power is reduced on your Nilfisk-ALTO Vacuum Cleaner because the suction power selected is too low. Adjust the suction power according to the instructions. Other possible causes include a hose diameter mismatch, a clogged suction hose/nozzle, a full tank/disposal bag/filter bag, a clogged filter element, a faulty or missing seal between the tank and the upper section, or a defective cleaning mechanism. Clean the hose or replace the seal as needed. Contact Nilfisk-Alto Service if the cleaning mechanism is defective.
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