Vacuum shows F6; LEDs flicker and the unit may pulse on and off rapidly.

Safety first: Remove the battery pack immediately if the unit is pulsing or behaving erratically. Do not continue to operate a vacuum with suspected electrical faults.

• Step 1 – Drying (if moisture suspected): If the vacuum was exposed to water or high humidity, remove the battery and allow the unit to dry in a warm, ventilated area for at least 48 hours. Do not use external heat sources like hair dryers.
• Step 2 – Visual inspection: Check for signs of liquid entry around buttons, seams, and the dust container area. Look for corrosion or residue.
• Step 3 – Basic reset: After drying, reinstall the battery and test briefly. If F6 reappears or the unit pulses, remove the battery again.
• Step 4 – Do not open PCB housing: High-density electronics inside cordless vacuums are not designed for user repair. Attempting to solder or replace components can be unsafe.
• Step 5 – Service center: Arrange for inspection by an authorized Severin service partner. The main control PCB or entire motor unit may need replacement.