Nilfisk Pulsing Due to Blockage or Sensor Feedback

Unit runs only in short bursts when trigger is held; feels like rapid pulsing

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Partial blockage in air path, Severely clogged filter, Faulty pressure/airflow sensor, Loose bin causing intermittent seal

Safety: Remove the battery before clearing blockages.

Clear all blockages: Detach bin, wand, and nozzle. Inspect and clear any obstructions.
Clean filters thoroughly: Wash or replace pre-motor and HEPA filters as per manual.
Check bin fit: Ensure the bin is fully latched and seals are intact.
Test again: If pulsing continues with clear airflow and clean filters, the airflow sensor or PCB may be faulty and require service.

Medium 3/5

Pre-Motor Filter

Check Price on Amazon

We may earn a commission from links on this page.