Safety first: Remove the battery pack before opening any covers. Avoid blowing compressed air directly into sensors.

Step 1 – Confirm airflow path is clear: Double-check that the dust container, cyclone, tube, and nozzle are completely free of blockages and that all filters are correctly installed.
Step 2 – Inspect seals and gaskets: Check the rubber seals around the dust container and filter housing for damage or misalignment. Air leaks can confuse the airflow sensor.
Step 3 – Gently clean sensor area: If accessible, locate the small pressure sensor port or tube near the motor inlet (refer to service documentation if available). Use a soft brush to remove dust around the port. Do not insert objects into the port.
Step 4 – Reassemble and test: Refit all parts and test the vacuum. If F2 remains and suction is still abnormal, the airflow sensor or main PCB is likely defective.
Step 5 – Professional repair: Replacement of the airflow sensor typically requires replacing the entire main PCB. Contact a Severin service partner for diagnosis and repair.

Vacuum shows F2 and suction is extremely weak even with clean filters.

Possible Causes