Cordless vacuum shows F4 and brush bar does not rotate, suction may be normal

Safety first: Remove the battery and disconnect the floorhead.

Steps:

• Remove brush bar: Unlock the end cap or release catch and slide the brush bar out.
• Clear all debris: Cut away hair and threads from the bar and end caps. Remove any objects stuck in the floorhead housing.
• Check bearings: Spin the brush bar by hand. If it feels rough or stiff, the bearings are likely worn; replace the brush bar assembly.
• Inspect belt (if belt-driven): On some Hoover cordless heads, a small belt links the motor to the brush bar. Check for snapped or stretched belt and replace if needed.

Reset: Refit the brush bar, reinstall the battery, and test. If F4 returns with a clean, free-spinning brush, the brush motor or overload circuit in the floorhead may need replacement.