Direct answer
Debris can be thrown back when the bin is full, suction path is blocked, brush direction is wrong for the floor, or large pieces cannot enter the head.
What this covers
- Vacuums · floor head
- The exact symptom in the title before component-level repair
- Consumer-accessible controls, connections and maintenance areas
What it does not cover
- ×Smoke, burning odor, swelling, liquid on powered parts or damaged wiring
- ×Opening sealed panels, bypassing interlocks or live-electrical testing
- ×Account ownership, billing or warranty disputes
Observe before changing anything
ReversibleNote whether debris exits the front of the head or falls from the inlet when power stops.
Isolate the failing boundary
ReversibleEmpty the bin, clear the neck and wand and choose the correct floor/head setting.
Apply the narrow correction
ReversibleTest slowly over a small controlled debris area with all seals latched.
Verify the result and stop at the boundary
ReversibleService is appropriate for a cracked airway, broken flap or brush housing.
Evidence ledger
Sources behind this answer
Visible sources support the visible claims. Home Product Support records the publisher, the fact used and the review date; community reports can suggest an issue but do not become a published fact on their own.
Exact questions
Common follow-ups
What should I check first for “Vacuum spits dirt and debris back onto the floor”?+
Note whether debris exits the front of the head or falls from the inlet when power stops.
How do I know whether the problem is external or inside the device?+
Empty the bin, clear the neck and wand and choose the correct floor/head setting.
When should I stop and request repair?+
Service is appropriate for a cracked airway, broken flap or brush housing.
Answer for the exact device and software version shown above.