Motorized floor brush does not spin, but suction is strong and there is no error code.

Safety first: Turn OFF and remove the battery before working on the floor head.

• Check for jams: Remove hair and debris from the brush roll as described in the E3 procedure.
• Inspect belt (if accessible): Open the belt cover on the floor head (if your model has one). Replace the OKP brush drive belt if it is broken or loose.
• Spin brush manually: With the belt and brush installed, try turning the brush by hand. It should rotate smoothly. If it binds, replace the brush roll assembly.
• If brush still does not spin: The internal brush motor or PCB in the floor head is likely faulty. Replace the entire motorized floor brush assembly.